Crown Audio CTS4200A User Manual

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Page 1

CTs Series Operation Manual

CTs 600

CTs 1200

CTs 2000

CTs 3000

Page 3: 2-channel models

Obtaining Other Language Versions: To obtain information in another language about the use of this product, please contact your local Crown Distributor. If you need assistance locating your local distributor, please contact Crown at 574-294-8000.

This manual does not include all of the details of design, production, or variations of the equipment. Nor does it cover every possible situa tion which may arise during installation, operation or maintenance.

The information provided in this manual was deemed accurate as of the publication date. However, updates to this information may have occurred. To obtain the latest version of this manual, please visit the Crown website at www.crownaudio.com.

Trademark Notice: Com-Tech, BCA, Crown, Crown Audio, Amcron and Multi-Mode are registered trademarks of Crown International. IQwic, PIP and PIP2 are trademarks of Crown International. Other trademarks are the property of their respective owners.

Page 31: Multi-channel models

CTs 4200

CTs 8200

137000-5A

5/08

Page 2

Important Safety Instructions

Importantes Instructions de Sécurité

1) Read these instructions.

2) Keep these instructions.

3) Heed all warnings.

4) Follow all instructions.

5) Do not use this apparatus near water.

6) Clean only with a dry cloth.

7) Do not block any ventilation openings. Install in accordance

7) Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.

with the manufacturer’s instructions.

8) Do not install near any heat sources such as radiators, heat

8) Do not install near any heat sources such as radiators, heat reg isters, stoves, or other apparatus (including ampliﬁ ers) that

reg isters, stoves, or other apparatus (including ampliﬁ ers) that produce heat.

produce heat.

9) Do not defeat the safety purpose of the polarized or grounding-

9) Do not defeat the safety purpose of the polarized or groundingtype plug. A polarized plug has two blades with one wider than

type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third

the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong is provided

grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not ﬁ t into your outlet,

for your safety. If the provided plug does not ﬁ t into your outlet, consult an electrician for replacement of the obsolete outlet.

consult an electrician for replacement of the obsolete outlet.

10) Protect the power cord from being walked on or pinched,

10) Protect the power cord from being walked on or pinched, par ticularly at plugs, convenience receptacles, and the point

par ticularly at plugs, convenience receptacles, and the point where they exit from the apparatus.

where they exit from the apparatus.

11) Only use attachments/accessories speciﬁ ed by the

11) Only use attachments/accessories speciﬁ ed by the manufac turer.

manufac turer.

12) Use only with a cart, stand, tripod, bracket, or table speciﬁ ed by

12) Use only with a cart, stand, tripod, bracket, or table speciﬁ ed by the manufacturer, or sold with the apparatus. When a cart is

the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination

used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

to avoid injury from tip-over.

13) Unplug this apparatus during lightning storms or when unused

13) Unplug this apparatus during lightning storms or when unused for long periods of time.

for long periods of time.

14) Refer all servicing to qualiﬁ ed ser vice personnel. Servicing is

14) Refer all servicing to qualiﬁ ed ser vice personnel. Servicing is required when the apparatus has been damaged in any way,

required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been

such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus

spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate

has been exposed to rain or moisture, does not operate nor mally, or has been dropped.

nor mally, or has been dropped.

15) Use the mains plug to disconnect the apparatus from the mains.

16) WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC

16) WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR

SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.

MOISTURE.

17) DO NOT EXPOSE THIS EQUIPMENT TO DRIPPING OR

17) DO NOT EXPOSE THIS EQUIPMENT TO DRIPPING OR SPLASHING AND ENSURE THAT NO OBJECTS FILLED WITH

SPLASHING AND ENSURE THAT NO OBJECTS FILLED WITH LIQUIDS, SUCH AS VASES, ARE PLACED ON THE

LIQUIDS, SUCH AS VASES, ARE PLACED ON THE EQUIP MENT.

EQUIP MENT.

18) THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL

18) THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL REMAIN READILY OPERABLE.

REMAIN READILY OPERABLE.

Wichtige Sicherheitsinstruktionen

Instrucciones de Seguridad Importantes

TO PREVENT ELECTRIC SHOCK DO NOT REMOVE TOP OR

TO PREVENT ELECTRIC SHOCK DO NOT REMOVE TOP OR BOTTOM COVERS. NO USER SERVICEABLE PARTS INSIDE.

BOTTOM COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. À PRÉVENIR LE CHOC ÉLECTRIQUE N’ENLEVEZ PAS LES

À PRÉVENIR LE CHOC ÉLECTRIQUE N’ENLEVEZ PAS LES COUVERCLES. IL N’Y A PAS DES PARTIES SERVICEABLE À

COUVERCLES. IL N’Y A PAS DES PARTIES SERVICEABLE À L’INTÉRIEUR. TOUS REPARATIONS DOIT ETRE FAIRE PAR

L’INTÉRIEUR. TOUS REPARATIONS DOIT ETRE FAIRE PAR PERSONNEL QUALIFIÉ SEULMENT.

PERSONNEL QUALIFIÉ SEULMENT. PARA PREVENIR UN CHOQUE ELÉCTRICO, NO RETIRE LAS

PARA PREVENIR UN CHOQUE ELÉCTRICO, NO RETIRE LAS CUBIERTAS SUPERIOR O INFERIOR. NO EXISTEN PARTES

CUBIERTAS SUPERIOR O INFERIOR. NO EXISTEN PARTES QUE PUEDAN SER REPARADAS POR EL USUARIO AL

QUE PUEDAN SER REPARADAS POR EL USUARIO AL INTE RIOR. REMITA EL SERVICICO AL PERSONAL

INTE RIOR. REMITA EL SERVICICO AL PERSONAL TÉCHNICAL CALIFICADO.

TÉCHNICAL CALIFICADO. TO COMPLETELY DISCONNECT THIS EQUIPMENT FROM

TO COMPLETELY DISCONNECT THIS EQUIPMENT FROM THE AC MAINS, DISCONNECT THE POWER SUPPLY CORD

THE AC MAINS, DISCONNECT THE POWER SUPPLY CORD PLUG FROM THE AC RECEPTACLE. THE MAINS PLUG OF

PLUG FROM THE AC RECEPTACLE. THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL REMAIN READILY

THE POWER SUPPLY CORD SHALL REMAIN READILY OPERABLE.

OPERABLE. POUR DÉMONTER COMPLÈTEMENT L’ÉQUIPEMENT DE

POUR DÉMONTER COMPLÈTEMENT L’ÉQUIPEMENT DE L’ALIMENTATION GÉNÉRALE, DÉMONTER LE CÂBLE

L’ALIMENTATION GÉNÉRALE, DÉMONTER LE CÂBLE D’ALI MENTATION DE SON RÉCEPTACLE. LA PRISE

D’ALI MENTATION DE SON RÉCEPTACLE. LA PRISE D’ALIMEN TATION RESTERA AISÉMENT FONCTIONNELLE.

D’ALIMEN TATION RESTERA AISÉMENT FONCTIONNELLE. PARA DESCONECTAR COMPLETAMENTE EL EQUIPO DEL

PARA DESCONECTAR COMPLETAMENTE EL EQUIPO DEL SUMINSTRO ELECTRICO, DESCONECTE EL CABLE DE

SUMINSTRO ELECTRICO, DESCONECTE EL CABLE DE ALI MENTACION DE LA TOMA DE CA. LAS PATAS DEL

ALI MENTACION DE LA TOMA DE CA. LAS PATAS DEL CONEC TOR DEL CABLE DE ALIMENTACIÓN DEBERAN

CONEC TOR DEL CABLE DE ALIMENTACIÓN DEBERAN MANTENERSE EN BUEN ESTADO.

MANTENERSE EN BUEN ESTADO.

WATCH FOR THESE SYMBOLS:

The lightning bolt triangle is used to alert the user to the risk

The lightning bolt triangle is used to alert the user to the risk of electric shock.

of electric shock. The exclamation point triangle is used to alert the user to

The exclamation point triangle is used to alert the user to important operating or maintenance instructions.

important operating or maintenance instructions.

REGARDEZ CES SYMBOLES

La triangle avec le sigle ‘’foudre’’ est employée pour alerter

La triangle avec le sigle ‘’foudre’’ est employée pour alerter l’utilisateur au risque de décharge électrique. Le triangle avec

l’utilisateur au risque de décharge électrique. Le triangle avec un point d’exclamation est employée pour alerter l’utilisateur

un point d’exclamation est employée pour alerter l’utilisateur d’instruction importantes pour lors opérations de

d’instruction importantes pour lors opérations de mainte nance.

mainte nance.

ATENCION CON ESTOS SÍMBOLOS

El triángulo con el símbolo de rayo eléctrico es usado para

El triángulo con el símbolo de rayo eléctrico es usado para alertar al usuario de el riesgo de un choque eléctrico.

alertar al usuario de el riesgo de un choque eléctrico. El triángulo con el signo de admiración es usado para alertar

El triángulo con el signo de admiración es usado para alertar al usuario de instrucciones importantes de operación o

al usuario de instrucciones importantes de operación o man tenimiento.

man tenimiento.

CTs Power Ampliﬁ ers

IMPORTANT

CTs Series ampliﬁ ers require Class 2 output wiring.

CTs Series ampliﬁ ers require Class 2 output wiring. Les ampliﬁ cateurs de série de CTs exigent des câbles de sortie de

Les ampliﬁ cateurs de série de CTs exigent des câbles de sortie de classe 2.

classe 2. CTs-Reihe-Verstärker verlangen Klasse die 2 Produktionsverdrah-

CTs-Reihe-Verstärker verlangen Klasse die 2 Produktionsverdrahtung.

tung. Los ampliﬁ cadores de la Serie CTs requieren de un cableado de

Los ampliﬁ cadores de la Serie CTs requieren de un cableado de salida Clase 2.

salida Clase 2.

MAGNETIC FIELD

CAUTION! Do not locate sensitive high-gain equipment such as

CAUTION! Do not locate sensitive high-gain equipment such as preampliﬁ ers directly above or below the unit. Because this ampliﬁ er

preampliﬁ ers directly above or below the unit. Because this ampliﬁ er has a high power density, it has a strong magnetic ﬁ eld which can

has a high power density, it has a strong magnetic ﬁ eld which can induce hum into unshielded devices that are located nearby. The

induce hum into unshielded devices that are located nearby. The ﬁ eld is strongest just above and below the unit.

ﬁ eld is strongest just above and below the unit. If an equipment rack is used, we recommend locating the

If an equipment rack is used, we recommend locating the ampli ﬁ er(s) in the bottom of the rack and the preampliﬁ er or other

ampli ﬁ er(s) in the bottom of the rack and the preampliﬁ er or other sensi tive equipment at the top.

sensi tive equipment at the top.

FCC COMPLIANCE NOTICE

This device complies with part 15 of the FCC rules. Operation is subject to the following

This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device

two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired

must accept any interference received, including interference that may cause undesired operation.

operation.

CAUTION: Changes or modiﬁ cations not expressly approved by the party responsible for

CAUTION: Changes or modiﬁ cations not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

compliance could void the user’s authority to operate the equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class B or

NOTE: This equipment has been tested and found to comply with the limits for a Class B or Class A digital device (depending on the model), pursuant to part 15 of the FCC Rules.

Class A digital device (depending on the model), pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in

These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency

a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause

energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. However, there is no guarantee that

harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harm ful

interference will not occur in a particular installation. If this equipment does cause harm ful interference to radio or television reception, which can be determined by turning the

interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or

equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

is connected.

• Consult the dealer or an experienced radio/TV technician for help.

page 2

Operation Manual

Page 3

CTs Power Ampliﬁ ers

CTs 2-Channel Series

CTs 600

CTs 1200

Operation Manual

CTs 2000

CTs 3000

page 3

Page 4

THIS PAGE INTENTIONALLY LEFT BLANK

CTs Power Ampliﬁ ers

page 4

Operation Manual

Page 5

CTs Power Ampliﬁ ers

Crown Audio, Inc.

ISSUED BY: Crown Audio, Inc.

1718 W. Mishawaka Road Elkhart, Indiana 46517 U.S.A.

European Representative’s Name and Address:

David Budge 10 Harvest Close Yateley GU46 6YS United Kingdom

Equipment Type: Commercial Audio Power Ampliﬁ ers Family Name: CTs Model Names: CTs 3000, CTs 2000, CTs 1200, CTs 600

EMC Standards:

EN 55103-1:1997 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 1: Emissions EN 55103-1:1997 Magnetic Field Emissions-Annex A @ 10 cm and 1 M EN 61000-3-2:1995+A14:2000 Limits for Harmonic Current Emissions (equipment input current 16A per phase) EN 61000-3-3:1995 Limitation of Voltage Fluctuations and Flicker in Low-Voltage Supply Systems Rated Current 16A EN 55022:2003 Limits and Methods of Measurement of Radio Disturbance Characteristics of ITE: Radiated, Class B Limits; Conducted, Class B EN 55103-2:1997 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 2: Immunity EN 61000-4-2:2003 Electrostatic Discharge Immunity (Environment E2-Criteria B, 4k V Contact, 8k V Air Discharge) EN 61000-4-3:2003 Radiated, Radio-Frequency, Electromagnetic Immunity (Environment E2, criteria A) EN 61000-4-4:2005 Electrical Fast Transient/Burst Immunity (Criteria B) EN 61000-4-5:2001 Surge Immunity (Criteria B) EN 61000-4-6:1996 Immunity to Conducted Disturbances Induced by Radio-Frequency Fields (Criteria A)

EN 61000-4-11:2004 Voltage Dips, Short Interruptions and Voltage Variation Safety Standard: EN 60065: 1998 Safety Requirements - Audio Video and Similar Electronic Apparatus

I certify that the product id entiﬁ ed above conforms to the requirements of the EMC Council Directive 89/336/EEC as amended by 92/31/EEC, and the Low Voltage Directive 73/23/EES as amended by 93/68/EEC.

Signed

Larry Coburn

Title: Senior Vice President of Manufacturing

DECLARATION of CONFORMITY

FOR COMPLIANCE QUESTIONS ONLY:

Date of Issue: March 1, 2002

Sue Whitﬁ eld 574-294-8289 swhitﬁ eld@crownintl.com

Operation Manual

Due to line current harmonics, we recommend that you contact your supply authority before connection.

page 5

Page 6

Table of Contents

CTs Power Ampliﬁ ers

Important Safety Instructions ...........................................................2

CTs 2-Channel Models.............................3

Declaration of Conformity ................................................................5

1 Welcome .......................................................8

1.1 Features ................................................................................8

2 How to Use This Manual ......................................9

3 Setup ............................................................10

3.1 Unpack Your Ampliﬁ er ..........................................................10

3.2 Install Your Ampliﬁ er .............................................................10

3.3 Ensure Proper Cooling ..........................................................10

3.4 Choose Input Wire and Connectors .......................................11

3.5 Choose Output Wire and Connectors ....................................11

3.6 Wire Your System ..................................................................12

3.6.1 Dual 8/4/2 Mode ...........................................................12

3.6.2 Bridge-Mono 16/8/4 Mode ............................................12

3.6.3 Dual 70V/100V Mode ....................................................13

3.6.4 Bridge-Mono 140V/200V Mode ....................................13

3.6.5 Dual Mode with “Y” Input ..............................................14

3.7 Connect to AC Mains ............................................................15

3.8 Startup Procedure .................................................................15

4 Operation .......................................................15

4.1 Precautions ...........................................................................15

4.2 Front Panel Controls and Indicators ......................................16

4.3 Back Panel Controls and Connectors ....................................17

5 Advanced Features and Options ............................ 18

5.1 Protection Systems ..............................................................18

5.1.1 Thermal Level Control (TLC) ........................................18

5.1.2 Junction Temperature Simulation (JTS).........................18

5.1.3 Fault ............................................................................. 18

5.1.4 High-Pass Filters .........................................................18

5.1.5 Low-Pass Filters ..........................................................18

5.1.6 AC Under/Over Voltage Protection ...............................18

5.1.7 Circuit Breaker .............................................................18

5.1.8 DC Output Servo ..........................................................18

5.1.9 Inrush Limiting .............................................................18

5.1.10 Variable-speed Fans ...................................................18

5.2 Advanced Features ...............................................................18

5.2.1 Switching Power Supply ..............................................18

5.2.2 Input Compressor ........................................................18

5.2.3 Sleep Circuit .................................................................18

5.2.4 Input Sensitivity Switches ............................................19

5.3 Options ................................................................................19

5.3.1 Nominal Attenuation Settings ....................................... 20

6 Troubleshooting ............................................... 21

7 Speciﬁ cations ................................................. 23

8 AC Power Draw and Thermal Dissipation .................. 27

(Continued on next page)

page 6

Operation Manual

Page 7

CTs Power Ampliﬁ ers

Table of Contents

CTs Multi-Channel Models ...................... 31

Declaration of Conformity ............................................................ 32

1 Welcome ..................................................... 33

1.1 Features ............................................................................ 33

2 How to Use This Manual ................................... 33

3 Setup ......................................................... 34

3.1 Unpack Your Ampliﬁ er ......................................................34

3.2 Install Your Ampliﬁ er .........................................................34

3.3 Ensure Proper Cooling ...................................................... 34

3.4 Choose Input Wire and Connectors ................................... 35

3.5 Choose Output Wire and Connectors ................................ 35

3.6 Wire Your System .............................................................. 36

3.6.1 Dual 8/4 Mode .......................................................... 36

3.6.2 Dual 70V Mode ......................................................... 36

3.6.3 Bridge-Mono 16/8 Mode .......................................... 37

3.6.4 Bridge-Mono 100V Mode ......................................... 37

3.7 Connect to AC Mains ........................................................ 38

3.8 Startup Procedure ............................................................. 38

4 Operation .................................................... 39

4.1 Precautions ....................................................................... 39

4.2 Front Panel Controls and Indicators .................................. 40

4.3 Back Panel Controls and Connectors ................................ 41

5 Advanced Features and Options .......................... 42

5.1 Protection Systems ........................................................... 42

5.1.1 Thermal Level Control (TLC) ..................................... 42

5.1.2 Fault .......................................................................... 42

5.1.3 Fault Isolation Topology (FIT) .................................... 42

5.1.4 35-Hz High-Pass Filter .............................................. 42

5.1.5 AC Under-/Over-Voltage Protection ........................... 42

5.1.6 Power Fuse ............................................................... 42

5.1.7 Inrush Limiting .......................................................... 42

5.1.8 Variable-speed Fans .................................................. 42

5.2 Advanced Features ............................................................ 42

5.2.1Switching Power Supply ............................................ 42

5.2.2 Mode Switch .............................................................42

5.2.3 Bridge Mode Indicator ............................................... 42

5.2.4 Channel Level Control ............................................... 43

5.3 Options ............................................................................. 44

5.3.1 Control Modules .......................................................44

5.3.2 Input Sensitivity ........................................................ 44

6 Troubleshooting ............................................ 45

7 Speciﬁ cations .............................................. 47

8 AC Power Draw and Thermal Dissipation ............... 51

CTs 2-Channel and Multi-Channel Models

9 Service ....................................................... 53

9.1. International and Canada Service ..................................... 53

9.2 US Service ........................................................................ 53

9.2.1 Service at a US Service Center ................................... 53

9.2.2 Factory Service ......................................................... 53

9.2.3 Factory Service Shipping Instructions ........................ 53

9.2.4 Packing Instructions .................................................. 53

9.2.5 Estimate Approval ...................................................... 53

9.2.6 Payment of Non-Warranty Repairs.............................. 53

10 Warranty ................................................... 54

Factory Service Information Form ................................................57

Product Registration Form ............................................................ 59

Operation Manual

page 7

Page 8

1 Welcome

CTs Power Ampliﬁ ers

Building on the foundation of the Com-Tech® Series, the Crown®CTs Series offers new ﬂ exi bility and value for installed sound. The Com-Tech Series was the ﬁ rst to offer independent selection of high- and lowimpedance opera tion for a speciﬁ c channel, and CTs Series ampliﬁ ers continue that tradition, with power levels and features carefully chosen to perfectly integrate into ﬁ xed install design requirements.

Modern power ampliﬁ ers are sophisticated pieces of engineering capable of producing extremely high power levels. They must be treated with respect and correctly installed if they are to provide the many years of reliable service for which they were designed.

In addition, CTs Series ampliﬁ ers include a number of features which require some expla nation before they can be used to their maxi mum advantage.

Please take the time to study this manual so that you can obtain the best possible service from your ampliﬁ er.

1.1 Features

Switching Power Supply for reduced

• weight.

High power-density, with all two-channel

• models in a 2U chassis.

Direct constant-voltage

• (70V/140V) or low-impedance (2/4/8 ohm) operation. No switch required.

Input sensitivity is independently

• select able for each channel. Choose lowimped ance (4/8 ohm), constant-voltage (70V/100V/140V/200V), or 26 dB.

TLC protection circuitry protects the

• ampliﬁ er from long-term excessive heat by subtly and dynamically reducing the gain only when necessary.

JTS circuitry (CTs 600/1200 only) quickly

• protects BJT output transistors from unsafe operating conditions without shut ting the channel down. (Not applicable to BCA ampliﬁ ers as they are inherently pro tected.)

PIP2™ (Programmable Input Processor)

• connector accepts accessory modules that tailor the ampliﬁ er to suit speciﬁ c applica tions.

Removable terminal block input

• connec tors, with “Y” Input Switch in the standard PIP2-BBY module.

(Continued on next page)

page 8

Operation Manual

Page 9

CTs Power Ampliﬁ ers

1 Welcome

Features (continued from page 8)

Switchable high-pass ﬁ lter for each chan nel

• provides low-frequency roll off to elim inate step down transformer saturation when used in distributed systems.

Comprehensive array of indicators includ ing

• Power, Data, and Bridge; along with Ready, Signal, Clip, Thermal and Fault for each channel, provide accurate diagnos tics.

Blue Power Indicator ﬂ ashes if the ampli ﬁ er

• shuts off due to an under/over-voltage condition on the AC mains.

Advanced protection circuitry guards against:

• shorted outputs, DC, mismatched loads, general overheating, under-/over-voltage, high-frequency overloads and internal faults.

Legendary Crown class I (BCA®) and class

• AB+B (Multi-Mode ®) output topol ogies offer the best in ampliﬁ er reliability. CTs 600/1200 use Class AB+B; CTs 2000/3000 use Class I.

Class I is the lowest distortion, lowest

• noise, and highest performing topology available among switch-mode ampliﬁ ers.

Continuously-variable fans optimize

• cool ing efﬁ ciency.

Three Year, No-Fault, Fully-Transferable

• Warranty completely protects your invest ment and guarantees its speciﬁ cations.

2 How to Use This Manual

This manual provides you with the necessary information to safely and correctly setup and operate your ampliﬁ er. It does not cover every aspect of installation, setup or operation that might occur under every condition. For addi tional information, please consult Crown’s Ampliﬁ er Application Guide (available online at www.crownaudio.com), Crown Tech Support, your system installer or retailer.

We strongly recommend you read all instruc tions, warnings and cautions contained in this manual. Also, for your protection, please send in your warranty registration card today. And save your bill of sale—it’s your ofﬁ cial proof of purchase.

Operation Manual

page 9

Page 10

3 Setup

CTs Power Ampliﬁ ers

3.1 Unpack Your Ampliﬁ er

Please unpack and inspect your ampliﬁ er for any damage that may have occurred during transit. If damage is found, notify the transpor tation company immediately. Only you can ini tiate a claim for shipping damage. Crown will be happy to help as needed. Save the shipping carton as evidence of damage for the shipper’s inspection.

We also recommend that you save all packing materials so you will have them if you ever need to transport the unit. Never ship the unit

without the factory pack.

YOU WILL NEED (not supplied):

Input wiring cables

• Output wiring cables

• Phillips screwdriver

•

Rack for mounting ampliﬁ er (or a stable surface for stacking)

WARNING: Before you start to set up your ampliﬁ er, make sure you read and observe the Important Safety Instructions found at the beginning of this manual.

3.2 Install Your Ampliﬁ er

CAUTION: Before you begin, make sure your ampliﬁ er is disconnected from the power source, with power switch in the “off” position and all level controls turned completely down (counterclockwise).

Use a standard 19-inch (48.3 cm) equipment rack. See Figure 3.1 for ampliﬁ er dimensions.

You may also stack amps without using a cabi net.

NOTE: When transporting, ampliﬁ ers should be supported at both front and back.

3.3 Ensure Proper Cooling

When using an equipment rack, mount units directly on top of each other. Close any open spaces in rack with blank panels. DO NOT block front or rear air vents. The side walls of the rack should be a minimum of two inches (5.1 cm) away from the ampliﬁ er sides, and the back of the rack should be a minimum of four inches (10.2 cm) from the ampliﬁ er back panel.

Figure 3.2 illustrates standard ampliﬁ er airﬂ ow.

page 10

Figure 3.2 Airﬂ ow

Figure 3.1 CTs 2-Channel Series Dimensions

Operation Manual

Page 11

CTs Power Ampliﬁ ers

3 Setup

3.4 Choose Input Wire and Connectors

Figure 3.3 shows connector pin assignments for balanced wiring, and Figure 3.4 shows connec tor pin assignments for unbalanced wiring.

NOTE: Custom wiring should only be per formed by qualiﬁ ed personnel.

3.5 Choose Output Wire and Con nectors

A protective cover is installed over the barrierstrip output. Some models have a cover with two holes. To remove this type of cover:

1. Loosen screws inside top and bottom holes of cover (see Figure 3.6).

2. Slide cover to left or right, then pull it off away from the ampliﬁ er.

3. Tighten screws. Crown recommends using professionally

con structed, high-quality, two- or four-conductor, heavy gauge speaker wire and connectors. You may use terminal forks up to 10 AWG or bare wire for your output connectors (see Figure 3.5). To prevent the possibility of short-circuits, wrap or otherwise insulate exposed loudspeaker cable connectors. For best results, Crown recom mends Panduit part #PV10-10LF-L or equivalent terminal fork. Screw spacing is shown in Figure

3.5. Using the guidelines below, select the appropri ate

size of wire based on the distance from ampliﬁ er to speaker (low-impedance loads only).

Distance Wire Size

up to 25 ft. (7.6m) 16 AWG 26-40 ft. (7.9-12.2m) 14 AWG 41-60 ft. (12.5-18.3m) 12 AWG > 60 ft (18.3m) 10 AWG

Figure 3.3 Balanced Input Connector Wiring

Figure 3.4 Unbalanced Input Connector Wiring

CAUTION: Never use shielded cable for output wiring.

Replace output cover after output wiring is complete.

Operation Manual

Figure 3.6 How to Remove the Two-Holed Barrier-Block Cover

Figure 3.5 Typical Output Connector Wiring

page 11

Page 12

3 Setup

3.6 Wire Your System

3.6.1 Dual 8/4/2 Mode

Typical input and output wiring, along with Attenuator and Mode Switch settings are shown in Figures 3.6 and

3.7. Make sure the Mode switch is set to the “Dual” posi tion when operating in Dual mode.

INPUTS: Connect input wiring for each channel. The Y switch on the rear PIP panel can be used to parallel the channel inputs when only mono input signals are neces sary. The ampliﬁ er’s channel outputs are still indepen dent.

OUTPUTS: Maintain proper polarity (+/–) on output connectors.

Connect the Channel 1 speaker’s positive (+) lead to ampliﬁ er Channel 1 positive terminal; repeat for negative (–). Repeat Channel-2 wiring as for Channel 1. Refer to Section 3.5 for output connector pin assignments.

3.6.2 Bridge-Mono 16/8/4 Mode

Typical input and output wiring, along with Attenuator and Mode Switch settings, are shown in Figures 3.8 and

3.9. Make sure the Mode switch is set to the “Mono” position when operating in Bridge-Mono mode.

INPUTS: Connect input wiring to Channel 1 only. OUTPUTS: Connect the speaker across the positive

ter minals of each channel pair. Do not use the negative ter minals of the channel pair when the pair is being operated in Bridge-Mono mode. Refer to Section 3.5 for output connector pin assignments.

NOTE: Crown provides a reference of wiring pin assign ments for commonly used connector types in the Crown Ampliﬁ er Application Guide available at www.crownaudio.com.

NOTE: When operating in Bridge-Mono mode, turn down (full CCW) the Input Attenuator for Channel 2. The Channel-1 Input Atttenuator works both channels.

See the next page for constant-voltage operation.

Figure 3.7 System Wiring, Dual Mode.

CTs Power Ampliﬁ ers

Figure 3.8 Attenuator and Mode-

Switch Settings for Dual Mode

Always route the input and output

wires in separate bundles.

Figure 3.10 Attenuator and Mode-

Switch Settings for Bridge-Mono Mode

page 12

Figure 3.9 System Wiring, Bridge-Mono Mode

Operation Manual

Page 13

CTs Power Ampliﬁ ers

3 Setup

3.6.3 Dual 70V/100V Mode

Typical input and output wiring, along with Atten uator and Mode Switch settings are shown in Fig ures 3.10 and 3.11. Make sure the Mode switch is set to the “Dual” position when operating in Dual mode.

INPUTS: Connect input wiring to both channels. OUTPUTS: In Dual Mode, the CTs 600/1200 can

power 25/50/70V lines; the CTs 2000/3000 can power 25/50/70/100V lines. Connect each chan nel of output connectors to speakers that have the appropriate transformers.

Figure 3.12 Attenuator and Mode-Switch

Settings for 70V/100V Operation

3.6.4 Bridge-Mono 140V/200V Mode

Typical input and output wiring, along with Atten uator and Mode Switch settings are shown in Fig ures 3.12 and 3.13. Make sure the Mode switch is set to the “Mono” position when operating in Bridge-Mono mode.

INPUTS: Connect input wiring to Channel 1 only. OUTPUTS: In Bridge-Mono mode, the CTs

600/1200 can power 140V lines; the CTs 2000/3000 can power 140V and 200V lines. Connect speak ers with 140V or 200V transformers across the positive terminals of the channel pair. Do not use the negative terminals of the channel pair when the pair is being operated in Bridge-Mono mode. Refer to Section 3.5 for output connector pin assignments.

NOTE: When operating in Bridge-Mono mode, turn down (full CCW) the Input Attenuator for Channel 2. The Channel-1 Input Attenuator works both channels.

Operation Manual

Figure 3.11 System Wiring and Y-Switch Setting for 70V/100V Operation

Figure 3.13 System Wiring and Y-Switch Setting for 140V/200V Operation

Always route the input and output wires in separate bundles.

Figure 3.14 Attenuator and Mode-Switch

Settings for 140V/200V Operation

page 13

Page 14

3 Setup

3.6.5 Dual Mode with “Y” Input

See Figure 3.14. This conﬁ guration feeds a mono signal to both Channel 1 and Channel 2. In the example in Figure 3.14, Channel 1 is driving a lowimpedance loudspeaker and Channel 2 is driving a loudspeaker with a 70V transformer.

INPUTS: Connect the signal to the Channel 1 input. On the

back panel, set the “Y” Input Switch to ON. OUTPUTS: Connect the Channel 1 speaker’s positive (+) lead to

Channel 1 positive terminal of amp; repeat for negative (–).

Connect the Channel 2 speaker’s positive (+) lead to Channel 2 positive terminal of amp; repeat for negative (–).

See Figure 3.15. Turn up both Input Attenuators and set the Mode Switch to Dual.

NOTE: When the “Y” Input Switch is on, the Chan nel 2 input can be used to daisy-chain to another ampliﬁ er.

CTs Power Ampliﬁ ers

Figure 3.15 System Wiring for “Y” Input Mode

page 14

Always route the input and output wires in separate bundles.

Figure 3.16

Attenuator and Mode-Switch

Settings for “Y” Input Mode

Operation Manual

Page 15

CTs Power Ampliﬁ ers

3 Setup

Operation Manual

3.7 Connect to AC Mains

On the back panel, check whether your ampliﬁ er is labeled for 120V or 220-240V AC mains. Connect your ampliﬁ er to the corresponding AC mains power source (power out let) with the supplied AC power cordset. First, connect the IEC end of the cordset to the IEC connector on the ampli ﬁ er. Then, with the ampliﬁ er in the OFF position, plug the other end of the cordset into the AC mains.

WARNING: The third prong of this connector (ground) is an important safety feature. Do not attempt to disable this ground connection by using an adapter or other methods.

Ampliﬁ ers don’t create energy. The AC mains voltage and current must be sufﬁ cient to deliver the power you expect. Check the ampliﬁ er’s back-panel label which speciﬁ es the required AC mains voltage and frequency. The AC mains voltage must be no more than 15% above the required voltage, and no less than 25% below the required voltage. The AC mains frequency must be within the required fre quency range. If you are unsure of the output voltage of your AC mains, please consult your electrician.

3.8 Startup Procedure

Use the following procedure when ﬁ rst turning on your ampliﬁ er:

1. Turn down the level of your audio source.

2. Turn down the level controls of the ampliﬁ er.

3. Turn on the “Power” switch. The Power indicator should glow. Wait for the “Ready” LED to illuminate.

4. Turn up the level of your audio source to an optimum level.

5. Turn up the Level controls on the ampliﬁ er until the desired loudness or power level is achieved. Verify that the Signal LED is ﬂ ashing.

6. Turn down the level of your audio source to its normal range.

If you ever need to make any wiring or installation changes, don’t forget to turn off the ampliﬁ er and discon nect the power cord.

For help with determining your system’s optimum gain structure (signal levels) please refer to the Crown Ampli ﬁ er Application Guide, available online at www.crownaudio.com.

4 Operation

4.1 Precautions

Your ampliﬁ er is protected from internal and external faults, but you should still take the following precautions for optimum performance and safety:

1. Before use, your ampliﬁ er ﬁ rst must be conﬁ gured for proper operation, including input and output wiring hookup. Improper wiring can result in serious operat ing difﬁ culties. For information on wiring and conﬁ g uration, please consult the Setup section of this manual or, for advanced setup techniques, consult Crown’s Ampliﬁ er Application Guide available online at www.crownaudio.com.

2. Use care when making connections, selecting signal sources and controlling the output level. The load you save may be your own!

3. Do not short the ground lead of an output cable to the input signal ground. This may form a ground loop and cause oscillations.

4. Never connect the output to a power supply, battery or power main. Electrical shock may result.

5. Tampering with the circuitry, or making unauthorized circuit changes may be hazardous and invalidates all agency listings.

6. Do not operate the ampliﬁ er with the red Clip LEDs constantly ﬂ ashing.

7. Do not overdrive the mixer, which will cause clipped signal to be sent to the ampliﬁ er. Such signals will be reproduced with extreme accuracy, and loudspeaker damage may result.

8. Do not operate the ampliﬁ er with less than the rated load impedance. Due to the ampliﬁ er’s output protec tion, such a conﬁ guration may result in premature clipping and speaker damage.

Remember: Crown is not liable for damage that results from overdriving other system components.

page 15

Page 16

4 Operation

CTs Power Ampliﬁ ers

4.2 Front Panel Controls and Indicators

A. Fault Indicator

Red LED, one per channel, ﬂ ashes when the ampliﬁ er output channel has stopped operating. Usually this means that the ampliﬁ er must be serviced.

B. Thermal Indicator

Red LED, one per channel, illuminates when the channel has shut down, or is very near shutting down, due to thermal stress or overload.

C. Ready Indicator

Green LED, one per channel, illuminates when the channel is initialized and ready to produce audio output. Indicator is off when the channel is set to standby mode via the System Architect or IQ Control Software packages.

Signal Indicators

Three green LEDS per channel indicate the ampliﬁ er’s input and output signal levels. From bottom to top the LEDs are:

D. Signal: input signal is above –40 dBu. E. –20 dB: ampliﬁ er output is within 20 dB of

clipping.

F. –10 dB: ampliﬁ er output is within 10 dB of

clipping.

G. Clip Indicator

Red LED, one per channel, illuminates when the channel’s output signal reaches the onset of audible clipping. The Clip Indicator also will illuminate during Ther mal Level Control (TLC) limiting or when the input compressor/limiter is protecting the ampliﬁ er from input overload.

H. Cooling Vents

Front-to-rear forced airﬂ ow.

I. Power Indicator

Blue LED indicates AC power has been applied and is within the safe operating range of the power supply. The LED will ﬂ ash when the AC line voltage is approxi mately 15% above or 25% below the nom inal rated value.

J. Data Indicator

Yellow LED indicates control activity This LED is driven by the IQ-PIP2 module via

interface. Note: Data indicator

the PIP2 ﬂ ashes only when the installed PIP module is polled for data, or is polled to see whether it is online.

K. Bridge Mode Indicator

Yellow LED illuminates when the rearpanel Mode Switch is set to the “Bridge” position

L. Power Switch

Push-on / push-off switch.

page 16

Figure 4.1 CTs 600 front panel.

Operation Manual

Page 17

CTs Power Ampliﬁ ers

4 Operation

4.3 Back Panel Controls and Connectors.

CTs 2000/3000 back panel is shown. CTs 600/1200 look slightly different near the Reset button.

M. Power Cord Connector

Standard 15 amp IEC inlet. A circuit breaker located near the IEC power inlet protects the ampliﬁ er from excessive AC current draw.

N. Reset Switch

Resets the circuit breaker that protects the power supply.

O. Ventilation Grille

Air ﬂ ow is front to back. Do not block the ventilation grilles.

P. PIP ™ Input Panel

PIP2-BBY module includes two balanced 3-pin removable barrier connectors. The “Y” Input Switch is described under letter R.

Sensitivity Switches

Behind the input panel are the Input Sensi tivity Switches. One 3-position switch per channel selects various sensitivity set tings. See Section 5.2.4 for details and diagram.

Q. Mode Switch

This two-position switch is used to select the ampliﬁ er’s mode of operation: Dual or Bridge Mono.

Dual mode is used for 2/4/8 ohms, for 70V

operation with the CTs 600/1200, and for 70/100V operation with the CTs 2000/3000.

Bridge mode is used for 4/8/16 ohms, for

140V operation with the CTs 600/1200, and for 100/140/200V operation with the CTs 2000/3000.

R. “Y” Input Switch

When set to ON, this switch parallels the input signals of the two channels, for use when the input signal is mono. The ampli ﬁ er’s channel outputs are still independent. The “Y” Input Switch also can

be used to daisy-chain the signal to another ampliﬁ er. See Section 3.6.5 for details.

S. Input Connectors

Balanced 3-pin terminal block connectors, one per channel.

T. Channel Level Controls

One 21-position detented rotary attenuator per channel, ranging from –100 dB to 0 dB gain.

U. High-Pass Filter

One 3-position switch per channel selects between OFF, 35Hz and 70Hz 3rd-order ﬁ l ters.

V. Speaker Connectors

One four-pole touch-proof terminal strip. Accepts up to 10 AWG terminal forks.

Output Cover (not shown)

This covers the output connectors, pro tecting users from the connectors’ poten tially high voltage. This cover is required for Class 2 wiring installations. See Sec tion 3.5 for details on removing covers that have two holes.

Operation Manual

Figure 4.2 CTs 2000 and 3000 Back Panel Controls and Connectors

page 17

Page 18

5 Advanced Features and Options

NOTE: For detailed information about these Crown ampliﬁ er features, please consult the Crown Ampliﬁ er Application Guide, available on the Crown website at www.crownaudio.com

5.1 Protection Systems

Your Crown ampliﬁ er provides extensive pro tection and diagnostic capabilities, including thermal level control, fault indicators, high-pass ﬁ ltering, DC protect, AC under/over volt age protection, inrush limiting, and variable-speed fans.

5.1.1 Thermal Level Control (TLC)

If the ampliﬁ er becomes too hot for safe opera tion, the light will shine brightly and TLC will engage the input compressor. By compressing the input, the ampliﬁ er will not generate as much heat and will have a chance to cool down. The degree of compression is proportional to the amount of overheating. This feature allows the show to go on, rather than having the ampliﬁ er shut down.

5.1.2 Junction Temperature Simu lation (JTS) (CTs 600/1200 only)

JTS circuitry simulates the operation of the ampliﬁ er’s output transistors, and compares it against the transistors known Safe Operation Area (SOA). If JTS sees that more power is about to be asked of the output devices than they are capable of delivering under the present conditions, JTS immediately limits the drive level until it falls within the SOA. Limiting is proportional and kept to an absolute minimumonly what is required to prevent the possibility of output transistor damage.

This level of protection enables Crown to increase output transistor utilization while also greatly increasing ampliﬁ er reliability.

5.1.3 Fault

The ampliﬁ er will light the Fault LED if the ampliﬁ er output stage stops operating. If this happens, see Section 8 for servicing informa tion.

5.1.4 High-Pass Filters

Very low frequency signals contain no useful musical energy, waste valuable ampliﬁ er power and headroom, and can be damaging to your speakers. Your Crown ampliﬁ er provides highpass ﬁ lters to remove these signals from each channel’s output.

On the back panel are two 3-position 3rd-order high-pass ﬁ lter switches (one per channel) with selections of Off, 35Hz and 70 Hz.

5.1.5 Low-Pass Filters

Gaussian-approximation ultrasonic ﬁ lters pre vent ultrasonic feedback and HF burnout in drivers. This type of ﬁ lter preserves transient response better than a Butterworth ﬁ lter.

5.1.6 AC Under/Over Voltage Protection

If the AC line voltage drops below 25% or rises above 15% of the nominal operating voltage of the ampliﬁ er, the ampliﬁ er’s power supply turns off and the blue Power LED ﬂ ashes. The ampli ﬁ er will turn back on when the AC line voltage returns to safe operating levels (within +15% / -25%).

5.1.7 Circuit Breaker

A circuit breaker located near the IEC power inlet protects the ampliﬁ er from excessive AC current draw.

5.1.8 DC Output Servo

The output servo circuit protects your drivers by eliminating DC offset, even in the presence of very large asymmetrical signals.

CTs Power Ampliﬁ ers

5.1.9 Inrush Limiting

A soft-start circuit in the power supply mini mizes the ampliﬁ er’s current draw during power-on.

5.1.10 Variable-speed Fans

Two continuously variable speed fans direct the airﬂ ow through the ampliﬁ er for cooling.

5.2 Advanced Features

5.2.1 Switching Power Supply

Crown’s Switching Power Supply minimizes the ampliﬁ er’s weight.

Typical non-switching power supplies require large, heavy transformers in order to produce the required power at the output stage. These transformers must be large to operate at 50 to 60 Hz (standard AC supplied by the power company).

By contrast, switching power supplies can operate with a much smaller (and lighter) trans former because they ﬁ rst convert the AC up to a much higher frequency, thereby reducing waste.

The power supply is voltage-speciﬁ c, allowing use in regions using 120V or 240V.

5.2.2 Input Compressor

Prevent input/output overload.

5.2.3 Sleep Circuit

Lowers standby power consumption by shut ting down the high-voltage supplies during idle periods.

NOTE: By default, the sleep circuit is not active on the CTs 600/1200, but may be activated as a service option.

page 18

Operation Manual

Page 19

CTs Power Ampliﬁ ers

5 Advanced Features and Options

5.2.4 Input Sensitivity Switches

See Figures 5.1 and 5.2. To access the Input Sensitivity Switches, turn off the ampliﬁ er and remove the PIP2-BBY Input Panel. The switches are in the top surface of the cavity behind the Input Panel. One 3-position switch per channel selects among these settings: CTs 600/1200: 1.4V (8/4 ohms), 26 dB gain, and 1.4V (70V operation). CTs 2000/3000: 1.4V (8/4 ohms), 26 dB gain, and 1.4V (70V) / 2V (100V). The Speciﬁ cations chapter lists the input sensitivity for the 26 dB gain set ting.

Figure 5.1 Input Sensitivity Switches for CTs 600/1200

5.3 Options

T-170V: See Figure 5.3. This is an autoformer that allows 100V output from the CTs 600/1200, and allows other ampliﬁ ers without direct constant voltage output to be easily integrated into distributed systems.

TP-170V: See Figure 5.4. This is a rack-mountable panel with four autoformers as described above.

PIP Modules

Versatile PIP (Programmable Input Processor) mod ules provide ﬂ exible expansion features that can be added to customize the ampliﬁ er. PIP modules plug into the connector inside the back panel of the ampli ﬁ er. PIP modules are available with features ranging from error-driven compressor/limiters to crossovers to remote control and monitoring via IQwic™ or System Architect software. Your ampliﬁ er is a PIP2 ampliﬁ er, which means it can take advantage of the many advanced features found in PIP2 modules. The CTs Series 2-channel models do not accept earlier

modules.

PIP Visit the Crown website at www.crownaudio.com, or

contact Crown Customer Service, for descriptions of available PIP and PIP2 modules.

Figure 5.3 T-170V

Figure 5.4 TP-170V (back view)

Figure 5.2 Input Sensitivity Switches for CTs 2000/3000

Operation Manual

page 19

Page 20

5 Advanced Features and Options

5.3.1 Nominal Attenuation Settings

The signal level for each input can be attenuated repeatably by adjusting the 21-step Level Control (see Section 4.3). Figure 5.5 shows the attenuation in dB for each detent. The setting of the input-sensitivity switch varies the actual attenation as shown.

CTs Power Ampliﬁ ers

Attenuation in dB

Detent 26 dB Tolerance (dB) 4/8 ohm or 70/100V

0 (full CCW) OFF — OFF

1 48.0 ±6 54.0

2 36.0 ±6 42.0

3 24.0 ±3 30.0

4 21.0 ±3 26.0

5 18.0 ±3 24.0

6 15.0 ±3 22.0

7 13.5 ±3 20.0

8 12.0 ±1.5 18.0

9 10.5 ±1.5 16.0

10 9.0 ±1.5 14.5

11 8.0 ±1.5 13.0

12 7.0 ±1.5 11.0

13 6.0 ±1 9.5

14 5.0 ±1 8.0

15 4.0 ±1 6.5

16 3.0 ±1 5.0

17 2.0 ±1 3.5

18 1.0 ±1 1.5

19 0.5 +1 –5 0.5

20 (full CW) 0.0 — 0.0

page 20

Figure 5.1 Level-control Attenuation per Detent for CTs 2-Channel Ampliﬁ ers

Operation Manual

Page 21

CTs Power Ampliﬁ ers

6 Troubleshooting

CONDITION: Power indicator is off.

POSSIBLE REASON

The ampliﬁ er has lost AC power.

• The ampliﬁ er’s Power switch is off.

• The ampliﬁ er is not plugged into the power

•

receptacle.

The ampliﬁ er output level is so high that

•

the power supply circuit breaker has tripped. Allow the unit to cool. Turn down the Level controls. Press the Reset Switch on the back panel.

CONDITION: Power indicator is ﬂ ashing.

POSSIBLE REASON:

The AC line voltage has dropped below

• 20% or has risen above 10% of the nomi nal line voltage of the power supply.

CONDITION: Fault indicator is ﬂ ashing.

POSSIBLE REASON:

The ampliﬁ er channel has stopped

• operat ing. Refer the unit to an authorized Crown Service Center.

CONDITION: Distorted sound.

POSSIBLE REASON:

Load is wired incorrectly or Stereo/Mono

• mode switch is set incorrectly. Check both.

Input is overlaoded by a signal level that is

• too high. Turn down your ampliﬁ er level controls, or turn down the input signal, until the clip light goes out.

Note: If the signal sounds distorted even though the Clip LED is off, the input signal may be dis torted before it reaches the ampliﬁ er input. Check gain staging and output levels of the mixer or preamp.

Operation Manual

CONDITION: Thermal indicator is on.

POSSIBLE REASON:

The ampliﬁ er is becoming too hot for safe

• operation. Allow ampliﬁ er to cool. Check for loads less than 2 ohms, and for excessive input levels. Check for proper ventilation and proper mode-switch set ting.

“Off/Flashing/On” above means that the LED can be off, or ﬂ ashing, or on.

page 21

Page 22

6 Troubleshooting

CONDITION: No sound, even though the amp has power. Power LED is on

with out ﬂ ashing and the amp is receiving an input sig nal. Signal indicator is ﬂ ashing.

POSSIBLE REASON:

Speakers not connected.

• Open circuit due to speaker failure.

•

There is a short on the ampliﬁ er output. First

•

disconnect your speakers from the affected channel(s) one by one to determine if one of the loads is shorted.

Ready LED is off. Channel has been set to

• standby mode via the control system.

CTs Power Ampliﬁ ers

CONDITION: Data indicator not ﬂ ash ing, even though PIP module is installed and host computer control software is active.

POSSIBLE REASON:

Cable between computer and PIP module is

• broken or not connected.

Note: Data indicator ﬂ ashes only when the installed PIP2 module is polled for data, or is polled to see whether it is online.

CONDITION: Bridge LED is lit.

POSSIBLE REASON:

Ampliﬁ er is in bridge-mono mode.•

page 22

CONDITION: No input signal. Signal indicator is not ﬂ ashing even though audio is applied, and the channel is ready..

POSSIBLE REASON:

Input signal level is very low.

• Level controls are turned down.

•

“Off/Flashing/On” above means that the LED can be off, or ﬂ ashing, or on.

Operation Manual

Page 23

CTs Power Ampliﬁ ers

7 Speciﬁ cations

Minimum Guaranteed Power (20 Hz - 20 kHz)

2-ohm Dual (per ch.) 150W 250W 1000W 1500W 4-ohm Dual (per ch.) 300W 600W 1000W 1500W 8-ohm Dual (per ch.) 300W 600W 1000W 1250W 16-ohm Dual (per ch.) 300W 300W 625W 625W 70V Dual (per ch.) 300W 600W 1000W 1500W 100V Dual (per ch.) 300W* 600W* 1000W 1500W 4-ohm Bridge 300W 500W 2000W 3000W 8-ohm Bridge 600W 1200W 2000W 3000W 16-ohm Bridge 600W 1200W 2000W 2500W 100V Bridge 600W* 1200W* 2000W 3000W 140V Bridge 600W 1200W 2000W 3000W 200V Bridge 600W* 1200W* 2000W 3000W

Performance CTs 600 CTs 1200 CTs 2000 CTs 3000

Frequency Response (at 1 watt, 20 Hz - 20 kHz) ± 0.25 dB ± 0.25 dB ± 0.25 dB ± 0.25 dB Signal to Noise Ratio (ref. rated power, 20 Hz to 20 kHz, A-weighted) < 105 dB < 105 dB < 105 dB < 105 dB Total Harmonic Distortion (THD) at full rated power, from 20 Hz to 20 kHz < 0.1% < 0.1% < 0.35% < 0.35% Intermodulation Distortion (IMD) 60 Hz and 7 kHz at 4:1, from –40 dB to

full rated power Damping Factor:

10 Hz to 100 Hz > 3000 > 3000 > 3000 > 3000 Crosstalk (below rated power)

20 Hz to 1kHz > 80 dB > 80 dB > 80 dB > 80 dB Common Mode Rejection (CMR) (20 Hz to 1 kHz, typical) 50 dB 50 dB 50 dB 50 dB DC Output Offset < 2 mV < 2mV < 2 mV < 2 mV Input Impedance nominally balanced, nominally unbalanced 10 k ohms, 5 k ohms 10 k ohms, 5 k ohms 10 k ohms, 5 k ohms 10 k ohms, 5 k ohms

CTs 600

Power at 0.1% THD

< 0.1% < 0.1% < 0.35% < 0.35%

CTs 1200

Power at 0.1% THD

CTs 2000

Power at 0.35% THD

CTs 3000

Power at 0.35% THD

* With T-170V or TP-170V.

Operation Manual

page 23

Page 24

7 Speciﬁ cations

Performance CTs 600 CTs 1200 CTs 2000 CTs 3000

Maximum Input Level Before input compression Absolute maximum

Load Impedance (Note: Safe with all types of loads) Stereo

+20 dBu

+ 32 dBu

2, 4, 8, 16 ohms, 70V, and 100V*

+20 dBu

+ 32 dBu

2, 4, 8, 16 ohms, 70V, and 100V*

+20 dBu

+ 32 dBu

2, 4, 8, 16, 70V,

and 100V

CTs Power Ampliﬁ ers

+20 dBu

+ 32 dBu

2, 4, 8, 16, 70V,

and 100V

Bridge Mono

Voltage Gain (at maximum level setting) 8/4 Ohm Operation 26 dB 70V Operation 100V Operation

Input Sensitivity 2/4/8 ohms 70V 100 V 26 dB gain

Required AC Mains (+15%, – 25%) 120V/60 Hz, 230V/50 Hz 120V/60 Hz, 230V/50 Hz 120V/60 Hz, 230V/50 Hz 120V/60 Hz, 230V/50 Hz Power Draw at Idle (120 VAC mains) 24W (Standby Mode) 24W (Standby Mode) 35W (Standby Mode) 35W (Standby Mode) Overall Group Delay < 120 usec < 120 usec < 120 usec < 120 usec Cooling Continuously variable speed

Dimensions Width Height Depth

Net Weight Shipping Weight

4, 8, 16, 100V*, 140V and 200V*

35:1 (31 dB) 20:1 (26 dB) 50:1 (34 dB)

1.4V

4 ohm load: 1.74V. 8 ohm load: 2.46V

forced air, front-to-back airﬂ ow

19 in. (48.3 cm.)

3.5 in. (8.9 cm.)

14.25 in. (36.2 cm.)

22.8 lb (10.3 kg),

27.7 lb (12.6 kg)

4, 8, 16, 100V*, 140V and 200V*

50:1 (34 dB) 20:1 (26 dB) 50:1 (34 dB)

1.4V

4 ohm load: 2.46V. 8 ohm load: 3.47V

Continuously variable speed

forced air, front-to-back airﬂ ow

19 in. (48.3 cm.)

3.5 in. (8.9 cm.)

14.25 in. (36.2 cm.)

23.4 lb (10.6 kg),

28.3 lb ( 12.8 kg)

4, 8, 16, 140V , 200V

63.9:1 (36 dB) 20:1 (26 dB) 50:1 (34 dB) 50:1 (34 dB)

1.4V

2.0V 4 ohm load: 3.17V. 8 ohm load: 4.48V

Continuously variable speed

forced air, front-to-back airﬂ ow

19 in. (48.3 cm.)

3.5 in. (8.9 cm.)

14.25 in. (36.2 cm.)

27.0 lb (12.2 kg)

32.0 lb (14.5 kg)

4, 8, 16, 140V, 200V

71.4:1 (37 dB) 20:1 (26 dB) 50:1 (34 dB) 50:1 (34 dB)

1.4V

2.0V 4 ohm load: 3.88V. 8 ohm load: 5.01V

Continuously variable speed

forced air, front-to-back airﬂ ow

19 in. (48.3 cm.)

3.5 in. (8.9 cm.)

14.25 in. (36.2 cm.)

27.7 lb (12.6 kg)

32.7 lb (14.8 kg)

* With T-170V or TP-170V.

page 24

Operation Manual

Page 25

CTs Power Ampliﬁ ers

7 Speciﬁ cations

Figure 7.1 CTs 600/1200 Typical Frequency Response (1 W, 8 ohms)

Operation Manual

Figure 7.2 CTs 600/1200 Typical Crosstalk vs. Frequency

Figure 7.3

CTs 600/1200

Typical Damping Factor

vs. Frequency

page 25

Page 26

7 Speciﬁ cations

CTs Power Ampliﬁ ers

page 26

Figure 7.4 CTs 2000/3000 Typical Frequency Response (1W)

Figure 7.6

CTs 2000/3000

Typical Damping Factor

vs. Frequency

Figure 7.5 CTs 2000/3000 Typical Crosstalk vs. Frequency

Operation Manual

Page 27

CTs Power Ampliﬁ ers

8 AC Power Draw and Thermal Dissipation

AC Power Draw and Thermal Dissipation:

Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz. Typical line impedance used. Measurements made with 120VAC mains. Line current figures for 230VAC units derived by multiplying 120VAC figures by 0.5. Data based on all channels driven.

CTs 600

Load

At Idle

1/8th Power Pink Noise 8 Ohms/Ch.

Typical of program material

just at clip.

1/3rd Power Pink Noise 8 Ohms/Ch.

Typical of program material

with severe clipping.

16 Ohms Bridge 4 Ohms/Ch. 8 Ohms Bridge 2 Ohms/Ch. 4 Ohms Bridge 70V/Ch. 300x2 140/200V Bridge 600

Rated

Power

300x2 600 300x2 600 150x2 300

Line Current

120VAC

5.8

7.4

7.0

4.2

8.6

11.3

10.8

6.5

Line Current

230VAC

2.9

3.7

3.5

2.1

4.3

5.6

5.4

3.3

Watts

watts in

60 0 60 205 52

461

631

583

336

716

968

964

527

watts out dissapated

200

204

102

207

383

554

545

261

516

764

862

320

Thermal Dissipation

Btu/hr kcal/hr

1307

1890

1859

892

1760

2608

2942

1091

330

477

469

225

444

657

742

275

Operation Manual

page 27

Page 28

8 AC Power Draw and Thermal Dissipation

AC Power Draw and Thermal Dissipation:

CTs Power Ampliﬁ ers

CTs 1200

Load

At Idle

1/8th Power Pink Noise 8 Ohms/Ch.

Typical of program material

just at clip.

1/3rd Power Pink Noise 8 Ohms/Ch.

Typical of program material

with severe clipping.

16 Ohms Bridge 4 Ohms/Ch. 8 Ohms Bridge 2 Ohms/Ch. 4 Ohms Bridge 100V/Ch. 600x2 140/200V Bridge 1200

16 Ohms Bridge 4 Ohms/Ch. 8 Ohms Bridge 2 Ohms/Ch. 4 Ohms Bridge 70V/Ch. 600x2 140/200V Bridge 1200

Rated

Power

600x2 1200 600x2 1200 250x2 500

Line Current

120VAC

7.6 3.8 641 157 484 1651 416

10.0 5.0 872 151 720 2458 620

8.8 4.4 1330 405 925 3158 796

7.6 3.8 641 157 484 1651 416

11.5 5.7 996 403 593 2025 511

15.5 7.8 1372 405 967 3300 832

11.5 5.7

Line Current

230VAC

Watts

watts in

60 0 60 205 52

1217 168 1050 358213.4 6.7

996 403 593 2025 511

watts out dissapated

Thermal Dissipation

Btu/hr kcal/hr

903

page 28

Operation Manual

Page 29

CTs Power Ampliﬁ ers

8 AC Power Draw and Thermal Dissipation

AC Power Draw and Thermal Dissipation:

Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz. Typical line impedance used. Measurements made with 120VAC mains. Data based on all channels driven. Line current figures for 230VAC units derived by multiplying 120VAC figures by 0.5. Line current figures for 100VAC units (not shown) are 1.2 times the line current figures of 120VAC units. Power draw (”watts in”) of 100VAC units is the same as power draw of 120VAC units.

CTs 2000

Load

At Idle (sleep mode)

1/8th Power Pink Noise 8 Ohms/Ch.

Typical of program material

just at clip.

1/3rd Power Pink Noise 8 Ohms/Ch.

Typical of program material

with severe clipping.

16 Ohms Bridge 4 Ohms/Ch. 8 Ohms Bridge 2 Ohms/Ch. 4 Ohms Bridge 70/100V/Ch. 1000x2 140/200V Bridge 2000

Rated

Power

1000x2 2000 1000x2 2000 1000x2 2000

Line Current

120VAC

6.6 3.3 546 256

7.0 3.5 563 255 307 1049 264

7.2 3.6 602 251

6.7 3.4 639 257 382 1304 329

11.3 5.6 980 676

12.3 6.2 1064 672 392 1338 337

13.7 6.9 1190 705

11.6 5.8 990 674 316 1080 272

Line Current

230VAC

Watts

watts in

40 0 40 137 34

watts out dissapated

290 988 249

351 1198 302

304 1036 261

485 1655 417

Thermal Dissipation

Btu/hr kcal/hr

Operation Manual

page 29

Page 30

8 AC Power Draw and Thermal Dissipation

AC Power Draw and Thermal Dissipation:

CTs Power Ampliﬁ ers

CTs 3000

Load

At Idle (sleep mode)

1/8th Power Pink Noise 8 Ohms/Ch.

Typical of program material

just at clip.

1/3rd Power Pink Noise 8 Ohms/Ch.

Typical of program material

with severe clipping.

16 Ohms Bridge 4 Ohms/Ch. 8 Ohms Bridge 2 Ohms/Ch. 4 Ohms Bridge 70/100V/Ch. 1000x2 140/200V Bridge 2000

16 Ohms Bridge 4 Ohms/Ch. 8 Ohms Bridge 2 Ohms/Ch. 4 Ohms Bridge 70/100V/Ch. 1500x2 140/200V Bridge 3000

Rated

Power

1000x2 2000 1000x2 2000 1000x2 2000

1250x2 2500 1500x2 3000 1500x2 3000

Line Current

120VAC

7.2 3.6 579 313 266 907 229

8.5 4.2 697 381 316 1079 272

9.6 4.8 790 384 405 1384 349

7.2 3.6 579 313 266 907 229

13.7 6.8 1196 835 360 1230 310

16.2 8.1 1469 1010 459 1565 395

19.2 9.6 1686 1024 662 2259 570

13.7 6.8 1196 835 360 1230 310

Line Current

230VAC

Watts

watts in

40 0 40 137 34

watts out dissapated

Thermal Dissipation

Btu/hr kcal/hr

page 30

Operation Manual

Page 31

CTs Power Ampliﬁ ers

CTs Multi-Channel Series

CTs 4200

Operation Manual

CTs 8200

page 31

Page 32

CTs Power Ampliﬁ ers

Crown Audio, Inc.

ISSUED BY: Crown Audio, Inc.

1718 W. Mishawaka Road Elkhart, Indiana 46517 U.S.A.

European Representative’s Name and Address:

David Budge 10 Harvest Close Yateley GU46 6YS United Kingdom

Equipment Type: Commercial Audio Power Ampliﬁ ers Family Name: CTs Model Names: CTs 4200A, CTs 8200A

EMC Standards:

EN 55103-1:1995 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 1: Emissions EN 55103-1:1995 Magnetic Field Emissions-Annex A @ 10 cm and 1 M EN 61000-3-2:1995+A14:2000 Limits for Harmonic Current Emissions (equipment input current 16A per phase) EN 61000-3-3:1995 Limitation of Voltage Fluctuations and Flicker in Low-Voltage Supply Systems Rated Current 16A EN 55022:1992 + A1: 1995 & A2:1997 Limits and Methods of Measurement of Radio Disturbance Characteristics of ITE: Radiated, Class B Limits; Conducted, Class B EN 55103-2:1996 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 2: Immunity EN 61000-4-2:1995 Electrostatic Discharge Immunity (Environment E2-Criteria B, 4k V Contact, 8k V Air Discharge) EN 61000-4-3:1996 Radiated, Radio-Frequency, Electromagnetic Immunity (Environment E2, criteria A) EN 61000-4-4:1995 Electrical Fast Transient/Burst Immunity (Criteria B) EN 61000-4-5:1995 Surge Immunity (Criteria B) EN 61000-4-6:1996 Immunity to Conducted Disturbances Induced by Radio-Frequency Fields (Criteria A)

EN 61000-4-11:1994 Voltage Dips, Short Interruptions and Voltage Variation Safety Standard: EN 60065: 1998 Safety Requirements - Audio Video and Similar Electronic Apparatus

I certify that the product identiﬁ ed above conforms to the requirements of the EMC Council Directive 89/336/EEC as amended by 92/31/EEC, and the Low Voltage Directive 73/23/EES as amended by 93/68/EEC.

Signed

Larry Coburn

Title: Senior Vice President of Manufacturing

DECLARATION of CONFORMITY

FOR COMPLIANCE QUESTIONS ONLY:

Sue Whitﬁ eld 574-294-8289 swhitﬁ eld@crownintl.com

Date of Issue: March 1, 2002

page 32

Due to line current harmonics, we recommend that you contact your supply authority before connection.

Operation Manual

Page 33

CTs Power Ampliﬁ ers

CTs 4200

Dual

4 Channels Driven

4-ohm (per ch.) 8-ohm (per ch.) 70V (per ch.)

Maximum Average Power

in watts with 0.1% THD.

1 kHz

20 Hz–20 kHz

260W 180W 220W

270W 220W 250W

215W 190W 220W

1 kHz 20 Hz–20 kHz1 Channel Driven

225W 210W 245W

Bridge-Mono

2 Channel-Pairs Driven

8-ohm (per ch. pair) 16-ohm (per ch. pair) 100V (per ch. pair)

Constant Voltage full bandwidth power ratings support

100Hz - 20kHz due to automatic High-Pass Filters.

CTs 8200

Dual

8 Channels Driven

4-ohm (per ch.) 8-ohm (per ch.) 70V (per ch.)

1 kHz 20 Hz–20 kHz

520W 400W 220W

560W 440W 250W

Maximum Average Power

in watts with 0.1% THD.

200W 160W 200W

270W 220W 250W

1 kHz 20 Hz–20 kHz1 Channel-Pair Driven

1 kHz

1 kHz 20 Hz–20 kHz1 Channel Driven

430W 380W 220W

450W 420W 245W

20 Hz–20 kHz

175W 155W 185W

230W 220W 230W

Bridge-Mono

4 Channel-Pairs Driven

8-ohm (per ch. pair) 16-ohm (per ch. pair) 100V (per ch. pair)

Constant Voltage full bandwidth power ratings support

100Hz - 20kHz due to automatic High-Pass Filters.

1 kHz 20 Hz–20 kHz

400W 320W 200W

540W 440W 250W

350W 310W 185W

1 kHz 20 Hz–20 kHz1 Channel-Pair Driven

460W 440W 230W

Proven Crown AB+B Multi-Mode

High power-density, with eight channels in

1 Welcome

Building on the foundation of the Com-Tech® Series, Crown’s CTs Series offers new ﬂ exibility and value for installed sound applications. The Com-Tech Series were the ﬁ rst to offer inde pendent selection of high- and lowimpedance operation for a speciﬁ c channel, and CTs Series ampliﬁ ers continue that tradition, with power levels and features carefully chosen to perfectly integrate into ﬁ xed install design requirements.

In addition, CTs Series ampliﬁ ers include a number of features which require some expla nation before they can be used to their maxi mum advantage.

Please take the time to study this manual so that you can obtain the best possible service from your ampliﬁ er.

1.1 Features

New Crown® Switching Power Supply for

• reduced weight.

• a 3U chassis and four channels in a 2U chassis.

Selectable constant-voltage (70V/100V) or

• low-impedance (8/4 ohm) operation for each channel pair.

FIT (Fault Isolation Topology) circuitry

• isolates faults within affected channels.

35 Hz High-Pass Filter (70 Hz in CTs 4200)

• is automatically inserted when the channel pair is set for constant-voltage operation. (corner frequency may be changed as a service option).

Accepts VC-MC accessory module that

• tailors the ampliﬁ er for remote VCA level control.

Comprehensive array of indicators

• includ ing Power and Data, along with Bridge, Ready, Signal, Clip, Thermal and Fault for each channel, provide accurate diagnos tics.

Blue Power Indicator ﬂ ashes if the

• ampli ﬁ er shuts off due to an under-/overvoltage condition on the AC mains.

Advanced protection circuitry guards

• against: shorted outputs, open circuits, DC, mismatched loads, general overheat ing, under-/over-voltage, high-

• topology.

Continuously-variable-speed fans

• opti mize cooling efﬁ ciency.

Three Year, No-Fault, Fully-Transferable

• Warranty completely protects your invest ment and guarantees its speciﬁ cations.

2 How to Use This Manual

We strongly recommend you read all instruc tions, warnings and cautions contained in this manual. Also, for your protection, please send in your warranty registration card today, or reg ister online at www.crownaudio.com. And save your bill of sale—it’s your ofﬁ cial proof of pur chase.

output

frequency overloads and internal faults.

Operation Manual

page 33

Page 34

3 Setup

CTs Power Ampliﬁ ers

3.1 Unpack Your Ampliﬁ er

We also recommend that you save all packing materials so you will have them if you ever need to transport the unit. Never ship the unit

without the factory pack.

YOU WILL NEED (not supplied):

Input wiring cables

• Output wiring cables

•

Rack for mounting ampliﬁ er (or a stable surface for stacking)

WARNING: Before you start to set up your ampliﬁ er, make sure you read and observe the Important Safety Instructions found at the beginning of this

manual.

3.2 Install Your Ampliﬁ er

CAUTION: Before you begin, make sure your ampliﬁ er is disconnected from the power source, with the power switch in the “off” position and all level controls turned completely down (counterclockwise).

Use a standard 19-inch (48.3-cm) equipment rack (EIA RS-310B). See Figure 3.1 for ampli ﬁ er dimensions.

You may also stack amps without using a cabinet.

NOTE: When transporting, ampliﬁ ers should be supported at both front and back.

3.3 Ensure Proper Cooling

When using an equipment rack, mount units directly on top of each other. Close any open spaces in rack with blank panels. DO NOT block front, rear or side air vents. The side walls of the rack should be a minimum of two inches (5.1 cm) away from the ampliﬁ er sides, and the back of the rack should be a minimum of four inches (10.2 cm) from the ampliﬁ er back panel.

Figure 3.2 illustrates standard ampliﬁ er airﬂ ow.

page 34

Thermal

Fault

Clip Signal Ready

Bridge34Bridge

Power

Data

Figure 3.1 Dimensions Left: CTs 4200 Right: CTs 8200

Figure 3.2 Airﬂ ow

Operation Manual

Page 35

CTs Power Ampliﬁ ers

3 Setup

3.4 Choose Input Wire and Connectors

Figure 3.3 shows connector pin assignments for balanced wiring, and Figure

3.4 shows connector pin assignments for unbalanced wiring. When possible, use balanced wiring for signal input, which provides better

rejection of unwanted noise and hum. For more information, refer to the Crown Ampliﬁ er Application Guide, available online at www.crownaudio.com

NOTE: Custom wiring should only be performed by qualiﬁ ed per sonnel.

3.5 Choose Output Wire and Connectors

Crown recommends using professionally constructed, highquality, two- or four-conductor, heavy gauge speaker wire and connectors. You may use terminal forks or bare wire for your output connectors (see Fig ure

3.5). CTs ampliﬁ er terminal strips accept up to 10 AWG terminal forks which ﬁ t over a #8 screw. For best results, Crown recommends Panduit part #PV1010LF-L or equivalent terminal fork. Screw spacing is shown in Figure 3.5.

To connect outputs, ﬁ rst remove the touch-proof cover plate covering the ter minal strip by removing the screw which holds it in place.

To prevent the possibility of short-circuits, wrap or otherwise insulate exposed loudspeaker cable and connectors. Also, a touch-proof cover plate, which covers the terminal strips, is provided to help prevent short circuits. The cover plate should be reinstalled after connecting outputs.

Suggested below are guidelines to select the appropriate size of wire based on the distance from ampliﬁ er to speaker. Check with local code as this may vary.

Distance Wire Size up to 25 ft (7.6 m) 16 AWG

26-40 ft (7.9-12.2 m) 14 AWG 41-60 ft (12.5-18.3 m) 12 AWG Over 60 ft (18.3 m) 10 AWG

CAUTION: Never connect the speaker return to the chassis of the ampliﬁ er, or damage to the ampliﬁ er may result.

CAUTION: Never use shielded cable for output wiring.

Figure 3.3 Balanced Input

Connector Wiring

See the Crown Ampliﬁ er Appli cation Guide, available

online at www.crownaudio.com, for pin assignments for

Figure 3.4 Unbalanced Input

Connector Wiring

NOTE: CTs 8200 is shown. Some CTs 4200 features are in different locations.

Output panel

shown with

touch-proof

cover plate

removed.

Figure 3.5 Output Connector Wiring

(Typical of two channels)

Operation Manual

page 35

Page 36

CTs Power Ampliﬁ ers

3 Setup

3.6 Wire Your System

CAUTION: Never change the position of the Mode Switch while the ampliﬁ er power is on. See Section 5.2.2 for more information.

3.6.1 Dual 8/4 Mode

Typical input and output wiring, along with level control and Mode Switch settings are shown in Figure 3.6. Make sure the Mode switch is set to the “Dual 8/4” position.

INPUTS: Connect input wiring for each channel. OUTPUTS: Maintain proper polarity (+/–) on

output connectors. Connect the Channel 1 speaker’s positive (+) lead

to ampliﬁ er Channel 1 positive terminal; repeat for negative (–). Repeat each channel wir ing as for Channel 1. Refer to Section 3.5 for output connector pin assignments.

3.6.2 Dual 70V Mode

CAUTION: Never change the position of the Mode Switch while the ampliﬁ er power is on. See Section 5.2.2 for more information.

Typical input and output wiring, along with level control and Mode Switch settings are shown in Figure 3.7. Make sure the Mode switch is set to the “Dual 70V” position.

INPUTS: Connect input wiring for each channel. OUTPUTS: Maintain proper polarity (+/–) on

output connectors. Connect Channel 1 positive (+) speaker load to

Channel 1 positive terminal of amp; repeat for negative (–). Repeat each channel wiring as for Channel 1. Refer to Section 3.5 for output con nector pin assignments.

BRIDGE

DUAL DUAL

CH 2

CH 1

CH 4

CH 3

DUAL DUAL

BRIDGE

Figure 3.6 System Wiring and Control Settings, Dual Mode, 8/4 Ohm

70V

BRIDGE

DUAL DUAL

CH 2

CH 4

DUAL DUAL

BRIDGE

CH 1

CH 3

70V

See the Crown Ampliﬁ er Appli cation Guide, available online at www.crownaudio.com, for pin assignments for commonly used connector types.

Output panel

shown with

touch-proof

cover plate

removed.

Output panel

shown with

touch-proof

cover plate

removed.

page 36

Figure 3.7 System Wiring and Control Settings, Dual Mode, 70V.

Operation Manual

Page 37

CTs Power Ampliﬁ ers

3 Setup

3.6.3 Bridge-Mono 16/8 Mode

CAUTION: Never change the position of the Mode Switch while the ampliﬁ er power is on. See Section 5.2.2 for more information.

Typical input and output wiring, along with level control and Mode Switch settings are shown in Figure 3.8. Make sure the Mode switch is set to the “Bridge 16/8” position.

INPUTS: Connect input wiring only to the lower(odd-) numbered channel pair.

OUTPUTS: Connect the speaker across the posi tive terminals of each channel pair. Do not use the negative terminals of the channel pair when the pair is being operated in Bridge-Mono mode.

NOTE: When operating the channel pair in Bridge-Mono mode, turn down (full CCW) the level control for the higher (even)-numbered channel of the channel pair. The lower (odd)numbered level control works both channels.

3.6.4 Bridge-Mono 100V Mode

CAUTION: Never change the position of the Mode Switch while the ampliﬁ er power is on. See Section 5.2.2 for more information.

Typical input and output wiring, along with level control and Mode Switch settings are shown in Figure 3.9. Make sure the Mode switch is set to the “Bridge 100V” position.

INPUTS: Connect input wiring only to the lower(odd-) numbered channel pair.

OUTPUTS: Connect the speaker across the posi tive terminals of each channel pair. Do not use the negative terminals of the channel pair when the pair is being operated in Bridge-Mono mode.

BRIDGE

DUAL DUAL

CH 2

CH 1

CH 4

CH 3

DUAL DUAL

BRIDGE

Figure 3.8 System Wiring and Control Settings, Bridge-Mono Mode, 16/8 Ohm.

100V

BRIDGE

DUAL DUAL

CH 2

CH 1

CH 4

CH 3

DUAL DUAL

BRIDGE

Figure 3.9 System Wiring and Control Settings, Bridge-Mono Mode, 100V

See the Crown

Ampliﬁ er Appli cation Guide, available

online at www. crownaudio.com, for pin assignments for commonly used connector types.

Operation Manual

page 37

Page 38

3 Setup

CTs Power Ampliﬁ ers

3.7 Connect to AC Mains

Connect your ampliﬁ er to the AC mains power source (power outlet) with the supplied AC power cordset. First, connect the IEC end of the cordset to the IEC connector on the ampliﬁ er; then, plug the other end of the cordset to the AC mains.

WARNING: The third prong of this connector (ground) is an important safety feature. Do not attempt to disable this ground connec tion by using an adapter or other methods.

Ampliﬁ ers don’t create energy. The AC mains volt age and current must be sufﬁ cient to deliver the power you expect. If the AC line voltage varies out of an acceptable range, the ampliﬁ er’s power supply turns off and the blue Power LED ﬂ ashes. The ampliﬁ er will turn back on when the AC line voltage returns to safe operating levels. Figure 3.10 pro vides voltage limits for all ampliﬁ er AC voltage con ﬁ gurations. Also, the ampliﬁ er must be run within the speciﬁ ed mains frequency requirements (indi cated on the ampliﬁ er’s back panel label). If you are unsure of the output voltage of your AC mains, please consult your electrician.

Models

100VAC

(CTs 8200

only)

120 VAC units 108VAC 132VAC

Under-Voltage

Limit

90VAC 110VAC

Over-Voltage

Limit

3.8 Startup Procedure

Use the following procedure when ﬁ rst turning on your ampliﬁ er:

1. Turn down the level of your audio source.

2. Turn down the level controls of the ampliﬁ er.

3. Turn on the “Power” switch. The Power indica tor should glow.

4. Turn up the level of your audio source to an optimum level.

5. Turn up the Level controls on the ampliﬁ er until the desired loudness or power level is achieved.

6. Turn down the level of your audio source to its normal range.

If you ever need to make any wiring or installation changes, don’t forget to disconnect the power cord.

For help with determining your system’s optimum gain structure (signal levels) please refer to the Crown Ampliﬁ er Application Guide, available online at www.crownaudio.com.

page 38

220V/230V/

240V units

Figure 3.10 AC Under-Voltage and Over-Voltage

Limits for Various Ampliﬁ er Models

198VAC 264VAC

Operation Manual

Page 39

CTs Power Ampliﬁ ers

4 Operation

4.1 Precautions

Your ampliﬁ er is protected from internal and external faults, but you should still take the fol lowing precautions for optimum performance and safety:

1. Before use, your ampliﬁ er ﬁ rst must be con ﬁ gured for proper operation, including input and output wiring hookup. Improper wiring can result in serious operating difﬁ culties. For information on wiring and conﬁ guration, please consult the Setup section of this manual or, for advanced setup techniques, consult Crown’s Ampliﬁ er Application Guide available online at www. crownaudio.com.

2. Use care when making connections, select ing signal sources and controlling the out put level. The load you save may be your own!

3. Do not short the ground lead of an output cable to the input signal ground. This may form a ground loop and cause oscillations.

4. WARNING: Never connect the output to a power supply, battery or power main. Electrical shock may result.

5. Tampering with the circuitry, or making unauthorized circuit changes may be hazard ous and invalidates all agency listings, and may also void the product’s warranty.

6. Do not operate the ampliﬁ er with the red Clip LEDs constantly ﬂ ashing.

7. Do not overdrive the mixer, which will cause clipped signal to be sent to the ampliﬁ er. Such signals will be reproduced with extreme accuracy, and loudspeaker damage may result.

8. Use caution when operating the ampliﬁ er with a 2-ohm load impedance on 1 channel. Do not operate the ampliﬁ er with less than a 2-ohm load impedance per channel when driving more than 1 channel. Due to the ampliﬁ er’s output protection, such a conﬁ g uration may result in premature clipping, speaker damage or a blown power fuse.

Remember: Crown is not liable for damage that results from overdriving other system compo nents.

Operation Manual

page 39

Page 40

4 Operation

CTs Power Ampliﬁ ers

4.2 Front Panel Controls and Indicators

Note: CTs 8200 is shown. Some CTs 4200 features are in different locations.

A. Bridge Mode Indicator

Yellow LED, one per channel pair, illumi nates when the channel pair’s Mode Switch is set to the “Bridge” position. If Mode switch is changed while ampliﬁ er is powered up, Bridge LED will ﬂ ash, indicat ing that the ampliﬁ er must be powered off and on to reset the Mode. See Section 6.9.

B. Ready Indicator

Green LED, one per channel, illuminates when the channel is initialized and ready to produce audio output.

C. Signal Indicator

Green LED, one per channel, illuminates to

indicate the presence of input signals above –40 dBu.

D. Clip Indicator

Red LED, one per channel, illuminates

when the THD of the channel’s output sig nal rises to a level typically considered as the onset of audible clipping. The Clip Indicator also will illuminate during Ther mal Level Control (TLC) or input overload.

E. Thermal Indicator

Red LED, one per channel, ﬂ ashes when

the channel has shut down due to thermal stress or overload. If the power supply goes into thermal overload, all channel LEDs will ﬂ ash.

F. Fault Indicator

Red LED, one per channel, illuminates

when the ampliﬁ er output channel has stopped operating.

G. Ventilation Grille

Front-to-rear forced airﬂ ow.

H. Data Indicator

Yellow LED indicates IQ Loop data activity

(if the ampliﬁ er is equipped with an IQ-MC module, and connected to an IQ Loop).

I. Power Indicator

Blue LED indicates ampliﬁ er has been

turned on and AC power is available. Indi cator also ﬂ ashes if the ampliﬁ er shuts off due to an under/over-voltage condition on the AC mains.

J. Power Switch

Ampliﬁ er is on when the switch is in the IN

position.

page 40

Figure 4.1 CTs 8200 front panel.

Operation Manual

Page 41

CTs Power Ampliﬁ ers

4 Operation

4.3 Back Panel Controls and Connectors

Note: CTs 8200 is shown. Some CTs 4200 features are in different locations.

K. AC Power Cord Connector

Standard IEC type 320 inlet. 120V models: 15-amp. 220-240V models: 10-amp. Voltage is indicated above IEC inlet.

L. Output Connectors

One four-pole terminal strip for every two chan nels with touch-proof cover. Accepts up to 10 AWG terminal forks. To connect outputs, ﬁ rst remove the touch-proof cover plate covering the terminal strip by removing the screw which holds it in place.

M. Accessory Panel

CTs 4200: Accepts an optional IQ-MC4A or VCA-MC4A module.

CTs 8200: Accepts an optional IQ-MC8 or VCA-MC8 module (explained in Section 5.3.1, Control Modules).

N. Channel Level Controls

One 21-position detented rotary potentiometer per channel, ranging from inﬁ nity (-70 dB) to 0 dB attenuation. Refer to Section 5.2.4 for pre cise dB attenuation increments for each detent.

O. Input Connectors

Removable Phoenix-style barrier connectors for balanced input.

P. Mode Switch

Used on each consecutive pair of channels, this four-position switch is used to select the ampli ﬁ er’s mode of operation: Dual 8/4 ohms, Dual 70V, Bridge-Mono 16/8 ohms, and Bridge-Mono 100V.

IMPORTANT: Be sure to power off the ampliﬁ er before change the Modeswitch setting. If this is not done, the Bridge

light will ﬂ ash to indicate that the power must be cycled off and back on to reset the mode.

Q. Cooling Vents

Front-to-rear forced airﬂ ow.

Operation Manual

Figure 4.2 CTs 8200 back panel (shown with touch-proof cover removed).

page 41

Page 42

5 Advanced Features and Options

NOTE: For more information about these Crown ampliﬁ er features, please visit the Crown web site at www.crownaudio.com.

5.1 Protection Systems

Your Crown ampliﬁ er provides extensive protection and diagnostic capabilities, including thermal level control, fault indicators, automatic high-pass ﬁ ltering, DC pro tect, AC under-/over-voltage protection, inrush limiting, and variable-speed fans.

5.1.1 Thermal Level Control (TLC)

If an ampliﬁ er channel starts to overheat, the TLC circuit will engage that channel’s input compressor. By com pressing the input, the ampliﬁ er will not generate as much heat and will have a chance to cool down. The degree of compression is proportional to the amount of overheating. If the channel becomes too hot for safe operation even after full TLC limiting, the channel will shut off, and the Thermal Indicator for that channel will ﬂ ash brightly to alert the user that a state of thermal stress or overload has cause the channel to shut down.

5.1.2 Fault

If an ampliﬁ er channel requires service, the corresponding Fault indicator will illuminate to alert the user of this condition. If this occurs, return the ampliﬁ er to the Crown factory or to an authorized Crown service center.

5.1.3 Fault Isolation Topology (FIT)

Crown’s new FIT (Fault Isolation Topology) design iso lates channel-speciﬁ c faults, and prevents them from affecting remaining channels. If a CTs multi-channel amp is powering multiple zones, and a channel fails, the other zones continue to operate. FIT makes the CTs 4200 and CTs 8200 the most trustworthy multi-channel ampliﬁ ers in the business!

5.1.4 35-Hz High-Pass Filter

A ﬁ xed 35-Hz (70-Hz in CTs 4200) high-pass ﬁ lter per channel pair is automatically inserted when the mode switch is set to either of the constant-voltage settings. The high-pass ﬁ lter corner frequency can be set to 70 Hz, or bypassed, with a service option.

5.1.5 AC Under-/Over-Voltage Protection

If the AC line voltage varies out of an acceptable range, the ampliﬁ er’s power supply turns off and the blue Power LED ﬂ ashes. The ampliﬁ er will turn back on when the AC line voltage returns to safe operating levels. Figure 5.1 provides voltage limits for all ampliﬁ er AC voltage con ﬁ gurations. Also, the ampliﬁ er must be run within the speciﬁ ed mains frequency requirements (indicated on the ampliﬁ er’s back panel label). If you are unsure of the out put voltage of your AC mains, consult your electrician.

Models

100VAC

(CTs 8200 only)

120 VAC units 108VAC 132VAC

220V/230V/

240V units

Figure 5.1 AC Under-Voltage and

Over-Voltage Limits for Various Ampliﬁ er

5.1.6 Power Fuse

A fuse protects the ampliﬁ er from excessive AC current draw.

5.1.7 Inrush Limiting

A soft-start circuit in the power supply minimizes the ampliﬁ er’s current draw during power-on.

5.1.8 Variable-speed Fans

Continuously variable speed fans direct the airﬂ ow through the ampliﬁ er for cooling.

Under-Voltage

Limit

90VAC 110VAC

198VAC 264VAC

Models

Over-Voltage

Limit

CTs Power Ampliﬁ ers

5.2 Advanced Features

5.2.1 Switching Power Supply

Crown’s new Switching Power Supply minimizes the ampliﬁ er’s weight.

Typical non-switching power supplies require large, heavy transformers in order to produce the required power at the output stage. These transformers must be large to absorb the substantial waste that occurs when operating at 50 to 60 Hz (standard AC supplied by the power company).

By contrast, switching power supplies can operate with a much smaller (and lighter) transformer because they ﬁ rst convert the AC up to a much higher frequency, thereby reducing waste.

The power supply is voltage-speciﬁ c, allowing use in regions using 120V/60Hz, 220V/50Hz, 230V/50Hz, 240V/50Hz, and 100V/50Hz AC mains.

5.2.2 Mode Switch

Each consecutive pair of channels has one four-position switch that selects the ampliﬁ er’s mode of operation. The switch positions are:

Dual mode for 4 or 8 ohm operation.

•

Dual mode for 70V constant-voltage

• opera tion.

Bridge-Mono mode for 8 or 16 ohm opera tion.

•

Bridge-Mono mode for 100V constant-voltage

• operation.

Be sure to turn off the ampliﬁ er before changing the Mode-switch setting.

5.2.3 Bridge Mode Indicator

This yellow LED indicates when the ampliﬁ er’s mode switch is set to the Bridge position. Each consecutive pair of channels has one Bridge LED.

page 42

Operation Manual

Page 43

CTs Power Ampliﬁ ers

5 Advanced Features and Options

5.2.4 Channel Level Control

The signal level for each input can be attenu ated accurately by adjusting the 21-step Level Control (see Section 4.2). Figure 5.2 shows the amount of attenuation in dB for each detent.

Note: Attenuation per detent varies with operat ing mode since gain varies with operating mode. Attenuation amounts shown may vary ±6%.

ATTENUATION in dB

Detent 4/8 Ohm 70V 100V

0 (full CCW) 68.31 72.90 71.02

1 67.54 72.06 70.26

2 32.23 36.61 34.90

3 25.46 29.74 28.00

4 21.83 25.87 24.22

5 19.23 23.20 21.58

6 17.12 20.94 19.40

7 15.36 19.02 17.53

8 13.76 17.22 15.79

9 12.28 15.53 14.20

10 10.84 13.90 12.62

11 9.51 12.32 11.16

12 8.28 10.87 9.81

13 7.09 9.45 8.45

14 6.30 8.11 7.22

15 4.92 6.70 5.94

16 3.82 5.26 4.63

17 2.62 3.70 3.21

18 1.35 1.90 1.66

19 0.01 0.01 0.01

20 (full CW) 0.00 0.00 0.00

Operation Manual

Figure 5.2 Level-control Attenuation per Detent in CTs Multichannel Ampliﬁ ers

page 43

Page 44

5 Advanced Features and Options

5.3 Options

Below are some available options. For current options, visit the Crown website at www. crownau dio.com.

5.3.1 Control Modules

VCA-MC (VCA module): See Figure 5.3. Pro vides independent remote level control for each channel. 4-pin removable Phoenix-style barrier connectors provide the +10VDC control voltage, ground, and control lines for two ampliﬁ er chan nels. Thus, 4channel ampliﬁ ers use two connec tors; 8-channel ampliﬁ ers use four connectors.

Choosing the Right Module

To order accessory modules for your ampliﬁ er, please refer to the model tag (located on the back panel of the ampliﬁ er) for your ampliﬁ er’s speciﬁ c model number. Then refer to the chart below to select the correct accessory for your requirements.

VCA MODULE

CTs 4200 VCA-MC4

CTs 4200A VCA-MC4A

CTs 8200

CTs 8200A

VCA-MC8

Wall-Mount level control panels for use with VCA module:

1-VCAP: See Figure 5.4. Used in conjunction with a

VCA-MC module, this is a single-gang panel pro viding remote volume control for one or more CTs ampliﬁ er channels. The potentiometer on the panel is wired directly to one of the VCA connectors on the VCA-MC.

4-VCAP: See Figure 5.5. This is a two-gang panel providing remote volume control for four or more CTs ampliﬁ er channels. The potentiometers on the panel are wired directly to the respective VCA con nector on the VCA-MC.

Refer to the VCA-MC Operation Manual for wiring of the single or multiple channel level control.

Your ampliﬁ er may have come with a VCA-MC module already factory-installed, or your choice of MC modules can be easily added to the ampliﬁ er by any authorized Crown Service Center. Contact Crown Technical Support for more details.

5.3.2 Input Sensitivity

The CTs 4200 and CTs 8200 have a ﬁ xed input sen sitivity of 1.4V. A service option is available for other input sensitivities.

CTs Power Ampliﬁ ers

Figure 5.4 1-VCAP Module

page 44

Figure 5.5 4-VCAP Module

Figure 5.3 VCA-MC8 Module

Operation Manual

Page 45

CTs Power Ampliﬁ ers

6 Troubleshooting

CONDITION: Power indicator is off.

POSSIBLE REASON

The ampliﬁ er has lost AC power.

•

The ampliﬁ er’s Power switch is off.

•

The ampliﬁ er is not plugged into the

• power receptacle.

The ampliﬁ er output level is so high that

• the power supply fuse has blown. Verify that input levels and output impedances are within safe ranges. Refer the unit to an authorized Crown service center for fuse replacement.

CONDITION: Power indicator is ﬂ ashing.

POSSIBLE REASON:

The AC line voltage has dropped below

• 10% or has risen above 10% of the nominal line voltage of the power supply.

Refer to section 5.1.6 for speciﬁ c voltage requirements.

CONDITION: Fault indicator is on.

POSSIBLE REASON:

The ampliﬁ er channel has stopped

• oper ating. Return the unit to an authorized Crown Service Center.

CONDITION: Distorted sound.

POSSIBLE REASON:

Load is wired incorrectly or Dual/Bridge

• mode switch is set incorrectly. Check both.

Input is overloaded by a signal level that is

• too high. Turn down your ampliﬁ er level controls, or turn down the input sig nal, until the clip light goes out.

Thermal Level Control (TLC) is active.

•

Note: If the signal sounds distorted even though the Clip LED is off, the input signal is distorted. Check gain staging and output lev els of the mixer or preamp.

Operation Manual

page 45

Page 46

6 Troubleshooting

CTs Power Ampliﬁ ers

CONDITION: No sound, even though the amp has power. Power LED is on

without ﬂ ashing and the amp is receiving an input signal. Signal indicator is ﬂ ashing.

Speakers not connected.

•

Open circuit due to speaker failure.

•

There is a short on the ampliﬁ er

• output. First disconnect your speakers from the affected channel(s) one by one to determine if one of the loads is shorted.

•

DC or excessive low-frequency signal at

the ampliﬁ er’s output has enabled speaker protection.

CONDITION: Thermal indicator is ﬂ ashing.

POSSIBLE REASON:

The ampliﬁ er has become too hot for

• safe operation. Check for loads less than 2 ohms, and for excessive input levels. Check for proper ventilation and proper mode-switch setting. Driving lowimpedance loads while in high-voltage mode can cause overheating.

CONDITION: All channel thermal indicators are ﬂ ashing.

POSSIBLE REASON:

Power supply thermal overload.•

CONDITION: No input signal.

(Signal indicator is not ﬂ ashing even though audio is applied and channel is ready).

POSSIBLE REASON:

Input signal level is very low.

•

Input cables have become disconnected.

•

page 46

CONDITION: Bridge LED is ﬂ ashing.

POSSIBLE REASON:

The mode switch was switched while the

• power was on.

Operation Manual

Page 47

CTs Power Ampliﬁ ers

(

7 Speciﬁ cations

Figure 7.1 CTs 4200

Power Chart

CTs 4200: MINIMUM GUARANTEED POWER

(in watts, 0.1% THD) 120VAC, 60 Hz units

Dual Mode

Channels Driven

1 kHz 20 Hz - 20 kHz 1 kHz 1 kHz 20 Hz - 20 kHz

4 Ohm 260 215 270 270 225 8 Ohm 180 190 210 220 210

25 Ohm) at 0.1% THD

70V

220 220* 240 250 245*

Bridge-Mono Mode

Channel Pairs Driven

1 kHz 20 Hz - 20 kHz 1 kHz 20 Hz - 20 kHz

Figure 7.2 CTs 8200

Power Chart

8 Ohm 16 Ohm 100V (50 Ohm)

* Constant Voltage full bandwidth power ratings support 100 Hz - 20 kHz due to automatic high-pass filters.

at 0.1% THD

CTs 8200: MINIMUM GUARANTEED POWER

520 430 560 450 400 380 440 420 220 220* 250 245*

(In watts, 0.1% THD) 120VAC, 60 Hz units

Dual Mode

Channels Driven

4 Ohm 8 Ohm

70V (25 Ohm) at 0.1% THD

1 kHz 1 kHz 1 kHz

200

160

200

20 Hz - 20 kHz

175 155 185*

250 190 220

260 200 240

1 kHz

270 220 250

Bridge-Mono Mode Channel Pairs Driven

1 kHz

8 Ohm 16 Ohm 100V (50 Ohm) at 0.1% THD

* Constant Voltage full bandwidth power ratings support 100 Hz - 20 kHz due to automatic high-pass filters.

400 320

200

20 Hz - 20 kHz

350 310 185*

1 kHz

500 380

220

1 kHz 20 Hz - 20 kHz

540 440

250

20 Hz - 20 kHz

230 220 230*

460 440 230*

Operation Manual

page 47

Page 48

CTs Power Ampliﬁ ers

7 Speciﬁ cations

Performance CTs 4200 CTs 8200

Frequency Response (at 1 watt, 20 Hz - 20 kHz) ± 0.5 dB ± 0.5 dB Phase Response (at 1 watt, 10 Hz - 20 kHz) ± 35° ± 35° Signal to Noise Ratio below rated power (20 Hz to 20 kHz) 100 dB unweighted 100 dB unweighted Total Harmonic Distortion (THD) at 1 watt, from 20 Hz to 20 kHz < 0.05% < 0.05% Intermodulation Distortion (IMD) 60 Hz and 7 kHz at 4:1,

from 163 milliwatts to full bandwidth power, typical Damping Factor: 10 Hz to 400 Hz >180 >180 Crosstalk (below rated power, 20 Hz to 1 kHz) > 80 dB > 80 dB Common Mode Rejection (CMR) (20 Hz to 1 kHz) > 50 dB > 50 dB DC Output Offset (Shorted input) < ± 5 mV < ± 5 mV Input Impedance nominally balanced, nominally unbalanced 20 kilohms, 10 kilohms 20 kilohms, 10 kilohms Maximum Input Level (before input compression) + 20 dBu + 20 dBu Load Impedance (Note: Safe with all types of loads)

Stereo Bridge Mono

Voltage Gain (at maximum level setting), 1.4V sensitivity 4/8 Ohm Operation 70V Operation 100V Operation

Required AC Mains (model dependent) 120V, 60 Hz. 220/230/240V, 50 Hz 100V, 50/60 Hz. 120V, 60 Hz. 220/230/240V, 50 Hz Power Draw at Idle (120VAC mains, all channels in 4/8 ohm mode) 70W 70W Power Draw at Idle (120VAC mains, all channels in 70V mode) 114W 114W Cooling Continuously variable speed forced air, front-to-back airﬂ ow Continuously variable speed forced air, front-to-back airﬂ ow Dimensions: Width, Height, Depth 19 in. (48.3 cm) W x 3.5 in. (8.9 cm) H x 16.25 in. (41.3 cm) D 19 in. (48.3 cm) W x 5.25 in. (13.3 cm) H x 16.25 in. (41.3 cm) D Net Weight, Shipping Weight 26 lb. 6 oz. (12 kg), 30 lb. 14 oz. (14 kg) 36 lb. 6 oz. (16.5 kg), 47 lb. (21.3 kg)

The following speciﬁ cations apply to all models in Dual 8/4 ohm mode with 8-ohm loads unless otherwise speciﬁ ed.

< 0.05% < 0.05%

4/8 and 25 ohms (70V)

8/16 and 50 ohms (100V)

20:1 (26 dB) 50:1 (34 dB)

71.4:1 (37 dB)

4/8 and 25 ohms (70V)

8/16 and 50 ohms(100V)

20:1 (26 dB) 50:1 (34 dB)

71.4:1 (37 dB)

page 48

Operation Manual

Page 49

CTs Power Ampliﬁ ers

7 Speciﬁ cations

Operation Manual

Figure 7.3 CTs 8200 Typical Frequency Response (1 W)

Figure 7.5 CTs 8200 Typical Damping Factor vs. Frequency

Figure 7.4 CTs 8200 Typical Phase Response (1 W)

page 49

Page 50

7 Speciﬁ cations

CTs Power Ampliﬁ ers

Figure 7.6 CTs 8200 Typical Output Impedance vs. Frequency

page 50

Figure 7.7 CTs 8200 Typical Crosstalk vs. Frequency

Operation Manual

Page 51

CTs Power Ampliﬁ ers

8 AC Power Draw and Thermal Dissipation

AC Power Draw and Thermal Dissipation:

CTs 4200

Load

At Idle (8.4 Ohm mode ) At Idle (70/100V mode)

1/8th Power Pink Noise 8 Ohms/Ch.

Typical of program material 16 Ohms Bridge just at clip. 4 Ohms/Ch.

8 Ohms Bridge 70V/Ch. 220x4 100V Bridge 220x2

1/3rd Power Pink Noise 8 Ohms/Ch.

Typical of program material 16 Ohms Bridge with severe clipping. 4 Ohms/Ch.

8 Ohms Bridge 70V/Ch. 220x4 100V Bridge 220x2

Rated

Power

200x4 400x2 260x4 520x2

Line Current

120VAC

5.2 2.6 400 99

7.8 3.9 639 134 505 1722 434

7.6 3.8 648 257

11.8 5.9 1005 349 655 2236 564

Line Current

230VAC

Watts

watts in

70 0 70 239 60

114 0 114 389 98

watts out dissapated

301 1027 259

318 1084 2735.3 2.7 427 110

391 1336 337

382 1303 3297.9 4.0 668 286

Thermal Dissipation

Btu/hr kcal/hr

Operation Manual

page 51

Page 52

8 AC Power Draw and Thermal Dissipation

AC Power Draw and Thermal Dissipation:

CTs Power Ampliﬁ ers

CTs 8200

Load

At Idle (8.4 Ohm mode ) At Idle (70/100V mode)

1/8th Power Pink Noise 8 Ohms/Ch.

Typical of program material 16 Ohms Bridge just at clip. 4 Ohms/Ch.

8 Ohms Bridge 70V/Ch. 200x8 100V Bridge 200x4

1/3rd Power Pink Noise 8 Ohms/Ch.

Typical of program material 16 Ohms Bridge with severe clipping. 4 Ohms/Ch.

8 Ohms Bridge 70V/Ch. 200x8 100V Bridge 200x4

Rated

Power

160x8 320x4 200x8 400x4

Line Current

120VAC

8.7 4.3 725 172 553 1889 476

13.3 6.7 1155 218 938 3200 807

10.1 5.1 857 203 653 2230 562

13.1 6.5 1136 437 699 2385 601

19.3 9.7 1748 557 1190 4062 1024

15.3 7.7 1344 552 792 2702 681

Line Current

230VAC

Watts

watts in

70 0 70 239 60

114 0 114 389 98

watts out dissapated

Thermal Dissipation

Btu/hr kcal/hr

page 52

Operation Manual

Page 53

CTs Power Ampliﬁ ers

9 Service

Crown ampliﬁ ers are quality units that rarely require ser vicing. Before returning your unit for service, please con tact Crown Technical Support to verify the need for servicing.

This unit has very sophisticated circuitry which should only be serviced by a fully trained technician. This is one reason why each unit bears the following label:

CAUTION: To prevent electric shock, do not remove covers. No user serviceable parts inside. Refer servicing to a qualiﬁ ed technician.

Complete the Crown Audio Factory Service Information form, in the back of this manual, when returning a Crown product to the factory or authorized service center. The form must be included with your product inside the box or in a packing slip envelope securely attached to the outside of the shipping carton. Do not send this form separately.

Warranty is only valid within the country in which the product is purchased.

9.1 International and Canada Service

Service may be obtained from an authorized service cen ter. (Contact your local Crown/Amcron representative or our ofﬁ ce for a list of authorized service centers.) To obtain service, simply present the bill of sale as proof of purchase along with the defective unit to an authorized service center. They will handle the necessary paperwork and repair.

Remember to transport your unit in the original factory pack.

9.2 US Service

Service may be obtained in one of two ways: from an authorized service center or from the factory. You may choose either. It is important that you have your copy of the bill of sale as your proof of purchase.

9.2.1 Service at a US Service Center

This method usually saves the most time and effort. Sim ply present your bill of sale along with the defective unit to an authorized service center to obtain service. They will handle the necessary paperwork and repair. Remem ber to transport the unit in the original factory pack. A list of authorized service centers in your area can

be obtained from Crown Factory Service, or online from http://www.crownaudio.com/support/servcent.htm.

9.2.2 Factory Service

Crown accepts no responsibility for non-serviceable product that is sent to us for factory repair. It is the owner’s responsibility to ensure that their product is ser viceable prior to sending it to the factory. Serviceable product list is available at http://crownweb.crownintl.com/crownrma/. For more information, please contact us direct.

A Service Return Authorization (SRA) is required for product being sent to the factory for repair. An SRA can be completed online at www.crownaudio.com/support/ factserv.htm. If you do not have access to the web, please call Crown’s Customer Service at 574.294.8200 or

800.342.6939 extension 8205. For warranty service, we will pay for ground shipping

both ways in the United States. Contact Crown Customer Service to obtain prepaid shipping labels prior to send ing the unit. Or, if you prefer, you may prepay the cost of shipping, and Crown will reimburse you. Send copies of the shipping receipts to Crown to receive reimbursement. Your repaired unit will be returned via UPS ground. Please contact us if other arrangements are required.

9.2.3 Factory Service Shipping Instructions:

1. Service Return Authorization (SRA) is required for product being sent to the factory for service. Please complete the SRA by going to www.crownaudio.com/support/factserv.htm. If you do not have access to our website, call

1.800.342.6939, extension 8205 and we’ll create the SRA for you.

2. See packing instructions that follow.

3. Ship product to: CROWN AUDIO FACTORY SERVICE 1718 W MISHAWKA RD. ELKHART, IN 46517

4. Use a bold black marker and write the SRA number on three sides of the box.

5. Record the SRA number for future reference. The SRA number can be used to check the repair status.

9.2.4 Packing Instructions

Important: These instructions must be followed. If they are not followed, Crown Audio, Inc. assumes no respon sibility for damaged goods and/or accessories that are sent with your unit.

1. Fill out and include the Crown Audio Factory Ser vice Information sheet in the back of this manual.

2. Do not ship any accessories (manuals, cords, hard ware, etc.) with your unit. These items are not needed to service your product. We will not be responsibility for these items.

3. When shipping your Crown product, it is important that it has adequate protection. We recommend you use the original pack material when returning the product for repair. If you do not have the original box, please call Crown at 800.342.6939 or 574.294.8210 and order new pack material. See instructions for “foam-in-place” shipping pack. (Do not ship your unit in a wood or metal cabinet.)

4. If you provide your own shipping pack, the mini mum recommended requirements for materials are as follows:

a. 275 P.S.I. burst test, Double-Wall carton that allows

for 2-inch solid Styrofoam on all six sides of unit or 3 inches of plastic bubble wrap on all six sides of unit.

b. Securely seal the package with an adequate carton

sealing tape.

c. Do not use light boxes or “peanuts”. Damage caused

by poor packaging will not be covered under war ranty.

Using your ‘foam-in-place’ shipping pack

Note: The foam-in-place packing is molded so that there is only one correct position for your product.

1. Open carton and lift center cushion leaving both endcushions in place.

2. Carefully place your product with the product’s front panel facing the same direction as arrows indicate.

3. Reset center cushion down over top of product’s chassis. The foam-in-place packing was molded to accommodate different chassis depth sizes. If your product’s chassis does not completely ﬁ ll the foamin-place cavity, you may use a soft but solid packing material (such as paper or bubble wrap) behind the chassis.

4. Enclose the completed Crown Audio Factory Ser vice Information form (or securely attach it to the outside of carton) and re-seal the shipping pack with a sturdy carton sealing tape.

9.2.5 Estimate Approval

Approval of estimate must be given within 30 days after being notiﬁ ed by Crown Audio Inc. Units still in the pos session of Crown after 30 days of the estimate will become the property of Crown Audio Inc.

9.2.6 Payment of Non-Warranty Repairs

Payment on out-of-waranty repairs must be received within 30 days of the repair date. Units unclaimed after 30 days become the property of Crown Audio Inc.

If you have any questions, please contact Crown Factory Service.

Crown Factory Service

1718 W. Mishawaka Rd.,

Elkhart, Indiana 46517 U.S.A.

Telephone:

574.294.8200

800.342.6939 (North America,

Puerto Rico, and Virgin Islands only)

Facsimile:

574.294.8301 (Technical Support)

574.294.8124 (Factory Service)

Internet:

http://www.crownaudio.com

Operation Manual

page 53

Page 54

CTs Power Ampliﬁ ers

10 Warranty

SUMMARY OF WARRANTY

Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to you, the ORIGINAL PURCHASER and ANY SUB SEQUENT OWNER of each NEW Crown product, for a period of three (3) years from the date of purchase by the original purchaser (the “warranty period”) that the new Crown product is free of defects in materials and workmanship. We further warrant the new Crown product regardless of the reason for failure, except as excluded in this War ranty.

Warranty is only valid within the country in which the product was purchased.

ITEMS EXCLUDED FROM THIS CROWN WARRANTY

This Crown Warranty is in effect only for failure of a new Crown product which occurred within the Warranty Period. It does not cover any product which has been damaged because of any inten tional misuse, accident, negligence, or loss which is covered under any of your insurance contracts. This Crown Warranty also does not extend to the new Crown product if the serial number has been defaced, altered, or removed.

WHAT THE WARRANTOR WILL DO

UNITED STATES & CANADA

the actual purchase price, not including inter est, insurance, closing costs, and other ﬁ nance charges less a reasonable depreciation on the product from the date of original purchase. War ranty work can only be performed at our autho rized service centers or at the factory. Warranty work for some products can only be performed at our factory. We will remedy the defect and ship the product from the service center or our factory within a reasonable time after receipt of the defec tive product at our authorized service center or our factory. All expenses in remedying the defect, including surface shipping costs in the United States, will be borne by us. (You must bear the expense of shipping the product between any for eign country and the port of entry in the United States including the return shipment, and all taxes, duties, and other customs fees for such for eign shipments.)

HOW TO OBTAIN WARRANTY SERVICE

You must notify us of your need for warranty ser vice within the warranty period. All components must be shipped in a factory pack, which, if needed, may be obtained from us free of charge. Corrective action will be taken within a reason able time of the date of receipt of the defective product by us or our authorized service center. If the repairs made by us or our authorized service center are not satisfactory, notify us or our autho rized service center immediately.

DISCLAIMER OF CONSEQUENTIAL AND INCIDENTAL DAMAGES

YOU ARE NOT ENTITLED TO RECOVER FROM US ANY INCIDENTAL DAMAGES RESULTING FROM ANY DEFECT IN THE NEW CROWN PRODUCT.

THIS INCLUDES ANY DAMAGE TO ANOTHER PRODUCT OR PRODUCTS RESULT ING FROM SUCH A DEFECT. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATIONS OF INCIDENTAL OR CONSEQUENTIAL DAM AGES, SO THE ABOVE LIMITATION OR EXCLU SION MAY NOT APPLY TO YOU.

WARRANTY ALTERATIONS

No person has the authority to enlarge, amend, or modify this Crown Warranty. This Crown War ranty is not extended by the length of time which you are deprived of the use of the new Crown product. Repairs and replacement parts provided under the terms of this Crown Warranty shall carry only the unexpired portion of this Crown Warranty.

DESIGN CHANGES

We reserve the right to change the design of any product from time to time without notice and with no obligation to make corresponding changes in products previously manufactured.

LEGAL REMEDIES OF PURCHASER

THIS CROWN WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE. No action to enforce this Crown Warranty shall be commenced after expiration of the warranty period.

THIS STATEMENT OF WARRANTY SUPERSEDES ANY OTHERS CONTAINED IN THIS MANUAL FOR CROWN PRODUCTS. 9/07

page 54

Operation Manual

Page 55

CTs Power Ampliﬁ ers

10 Warranty

SUMMARY OF WARRANTY

Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to you, the ORIGINAL PURCHASER and ANY SUB SEQUENT OWNER of each NEW Crown1 product, for a period of three (3) years from the date of pur chase by the original purchaser (the “warranty period”) that the new Crown product is free of defects in materials and workmanship, and we further warrant the new Crown product regardless of the reason for failure, except as excluded in this Warranty.

Warranty is only valid within the country in which the product is purchased.

1 Note: If your unit bears the name “Amcron,” please substitute it

for the name “Crown” in this warranty.

ITEMS EXCLUDED FROM THIS CROWNWARRANTY

WORLDWIDE EXCEPT USA & CANADA

WHAT THE WARRANTOR WILL DO

We will remedy any defect, regardless of the rea son for failure (except as excluded), by repair, replacement, or refund. We may not elect refund unless you agree, or unless we are unable to pro vide replacement, and repair is not practical or cannot be timely made. If a refund is elected, then you must make the defective or malfunctioning product available to us free and clear of all liens or other encumbrances. The refund will be equal to the actual purchase price, not including inter est, insurance, closing costs, and other ﬁ nance charges less a reasonable depreciation on the product from the date of original purchase. War ranty work can only be performed at our autho rized service centers. We will remedy the defect and ship the product from the service center within a reasonable time after receipt of the defec tive product at our authorized service center.

HOW TO OBTAIN WARRANTY SERVICE

You must notify your local Crown importer of your need for warranty service within the warranty period. All components must be shipped in the original box. Corrective action will be taken within a reasonable time of the date of receipt of the defective product by our authorized service center. If the repairs made by our authorized service cen ter are not satisfactory, notify our authorized ser vice center immediately.

DISCLAIMER OF CONSEQUENTIAL AND INCIDENTAL DAMAGES

YOU ARE NOT ENTITLED TO RECOVER FROM US ANY INCIDENTAL DAMAGES RESULTING FROM ANY DEFECT IN THE NEW CROWN PRODUCT. THIS INCLUDES ANY DAMAGE TO ANOTHER PRODUCT OR PRODUCTS RESULTING FROM SUCH A DEFECT.

WARRANTY ALTERATIONS

No person has the authority to enlarge, amend, or modify this Crown Warranty. This Crown Warranty is not extended by the length of time which you are deprived of the use of the new Crown product. Repairs and replacement parts provided under the terms of this Crown Warranty shall carry only the unexpired portion of this Crown Warranty.

DESIGN CHANGES

We reserve the right to change the design of any product from time to time without notice and with no obligation to make corresponding changes in products previously manufactured.

LEGAL REMEDIES OF PURCHASER

No action to enforce this Crown Warranty shall be commenced after expiration of the warranty period.

THIS STATEMENT OF WARRANTY SUPERSEDES ANY OTHERS CONTAINED IN THIS MANUAL FOR CROWN PRODUCTS. 9/07

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PRODUCT REGISTRATION

Crown Audio, Inc. 1718 W. Mishawaka Rd. Elkhart, IN 46517-9439 Phone: 574-294-8000 Fax: 574-294-8329 www.crownaudio.com

Online registration is also available at http://crownweb.crownintl.com/webregistration.

Warranty is only valid within the country in which the product is purchased.

When this form is used to register your product, it may be mailed or faxed.

Crown Audio, Inc. Fax: 574-294-8329 1718 W Mishawaka Rd Elkhart IN 46517

Please note that some information is required. Incomplete registrations will not be processed. * Indicates required information.

OWNER’S INFORMATION - PLEASE PRINT

* First name: ______________________ Middle initial: _____ * Last name: ________________________________ Company: _________________________________________________________________________________ * Mailing address: ____________________________________________________________________________ * City: ____________________________* State: ___________________________* Zip Code: ________________ * Country: __________________________ E-mail address: ___________________________________________ * Phone # (include area code): ___________________________ Fax #: __________________________________

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PRODUCT INFORMATION

* MODEL * SERIAL # * PURCHASE DATE e.g. IT8000, CDi1000, PCC160 e.g. 8000000000 mo/day/yr ________________________________ ____________________ ______ /_____ /_____ ________________________________ ____________________ ______ /_____ /_____ ________________________________ ____________________ ______ /_____ /_____ ________________________________ ____________________ ______ /_____ /_____

Product purchased from: *(Business/Individual) ___________________________ Country: ________________________ Comments: ____________________________________________________________________________________ _____________________________________________________________________________________________ _____________________________________________________________________________________________

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Crown Audio Factory Service Information

Shipping Address: Crown Audio Factory Service, 1718 W. Mishawaka Rd., Elkhart, IN 46517

PLEASE PRINT CLEARLY

SRA #: __________________(If sending product to Crown factory service.) Model: ____________________________________________ Serial Number: _____________________ Purchase Date: _____________

PRODUCT RETURN INFORMATION

Individual or Business Name: ____________________________________________________________________________________________________________________________________________________________

Phone #: __________________________________________________ Fax #: ________________________________________ E-Mail: _______________________________________________________

Street Address (please, no P.O. Boxes): _____________________________________________________________________________________________________________________________________________________

City: __________________________________________ State/Prov: ________________________________ Postal Code: _________________ Country: _________________________

Nature of problem: ___________________________________________________________________________________________________________________________________________________________________

_________________________________________________________________________________________________________________________________________________________________________________

Other equipment in your system: _________________________________________________________________________________________________________________________________________________________

If warranty is expired, please provide method of payment. Proof of purchase may be required to validate warranty.

PAYMENT OPTIONS

I have open account payment terms. Purchase order required. PO#: __________________________________ COD

Credit Card (Information below is required; however if you do not want to provide this information at this time, we will contact you when your unit is repaired for the information.)

Credit card information:

Type of credit card: MasterCard Visa American Express Discover

Type of credit card account: Personal/Consumer Business/Corporate

Card # ______________________________________________ Exp. date: _____________ * Card ID #: __________________________

* Card ID # is located on the back of the card following the credit card #, in the signature area. On American Express, it may be located on the front of the card. This number is required to process the charge to your account. If you do not want to provide it at this time, we will call you to obtain this number when the repair of your unit is complete.

Name on credit card: ____________________________________________________________________________

Billing address of credit card: __________________________________________________________________________

__________________________________________________________________________

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Crown Audio CTS4200A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual