Crown Audio CTS4200A User Manual

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

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

CTs Power Ampliﬁ ers

CTs 2-Channel Series

CTs 600

CTs 1200

Operation Manual

CTs 2000

CTs 3000

page 3

THIS PAGE INTENTIONALLY LEFT BLANK

CTs Power Ampliﬁ ers

page 4

Operation Manual

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

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

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

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

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

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

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

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

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

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

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

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

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

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

+ 42 hidden pages

Crown Audio CTS4200A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual