Crown CTs User Manual

Operation Manual

CTs Multi-Channel USP/CN Series

CTs 4200USP/CN

CTs 8200USP/CN

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 situation 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: Crown, Crown Audio, Amcron, Com-Tech, IQ System, and Multi-Mode are registered trademarks of Crown Inter national. HiQnet and System Architect are trademarks of Harman Pro Group. Other trademarks are the property of their respective own ers.

Some models may be exported under the name Amcron.

139309-4

10/10

CTs Multi-Channel Power Ampliﬁers

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 with the manufacturer’s instructions.

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

9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not ﬁt into your outlet, consult an electrician for replacement of the obsolete outlet.

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

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

11. Only use attachments/accessories speciﬁed by the manufac-

turer.

12. Use only with a cart, stand, tripod, bracket, or table speciﬁed

by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or when

unused for long periods of time.

14. Refer all servicing to qualiﬁed service personnel. Servicing

is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate 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

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

17. DO NOT EXPOSE THIS EQUIPMENT TO DRIPPING OR

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

18. THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL

REMAIN READILY OPERABLE.

Wichtige Sicherheitsinstruktionen

Instrucciones de Seguridad Importantes

TO PREVENT ELECTRIC SHOCK DO NOT REMOVE TOP OR BOTTOM COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

À PRÉVENIR LE CHOC ÉLECTRIQUE N’ENLEVEZ PAS LES COUVERCLES. IL N’Y A PAS DES PARTIES SERVICEABLE À L’INTÉRIEUR. TOUS REPARATIONS DOIT ETRE FAIRE PAR PERSONNEL QUALIFIÉ SEULMENT.

PARA PREVENIR UN CHOQUE ELÉCTRICO, NO RETIRE LAS CUBIERTAS SUPERIOR O INFERIOR. NO EXISTEN PARTES QUE PUEDAN SER REPARADAS POR EL USUARIO AL INTE RIOR. REMITA EL SERVICICO AL PERSONAL TÉCHNICAL CALIFICADO.

TO COMPLETELY DISCONNECT THIS EQUIPMENT FROM THE AC MAINS, DISCONNECT THE POWER SUPPLY CORD PLUG FROM THE AC RECEPTACLE. THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL REMAIN READILY OPERABLE.

POUR DÉMONTER COMPLÈTEMENT L’ÉQUIPEMENT DE L’ALIMENTATION GÉNÉRALE, DÉMONTER LE CÂBLE D’ALIMENTATION DE SON RÉCEPTACLE. LA PRISE D’ALIMEN TATION RESTERA AISÉMENT FONCTIONNELLE.

PARA DESCONECTAR COMPLETAMENTE EL EQUIPO DEL SUMINSTRO ELECTRICO, DESCONECTE EL CABLE DE ALIMENTACION DE LA TOMA DE CA. LAS PATAS DEL CONEC TOR DEL CABLE DE ALIMENTACIÓN DEBERAN MANTENERSE EN BUEN ESTADO.

WATCH FOR THESE SYMBOLS:

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

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

REGARDEZ CES SYMBOLES:

La triangle avec le sigle ‘’foudre’’ est employée pour alerter l’utilisateur au risque de décharge électrique. Le triangle avec un point d’exclamation est employée pour alerter l’utilisateur d’instruction importantes pour lors opérations de mainte nance.

ATENCION CON ESTOS SÍMBOLOS:

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

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

IMPORTANT

CTs Series ampliﬁers require Class 2 output wiring. Les ampliﬁcateurs de série de CTs exigent des câbles de sortie de classe 2. CTs-Reihe-Verstärker verlangen Klasse die 2 Produktionsverdrah tung. Los ampliﬁcadores de la Serie CTs requieren de un cableado de sal ida Clase 2.

MAGNETIC FIELD

CAUTION! Do not locate sensitive high-gain equipment such as preampliﬁers directly above or below the unit. Because this ampliﬁer has a high power density, it has a strong magnetic ﬁeld which can induce hum into unshielded devices that are located nearby. The ﬁeld is strongest just above and below the unit.

If an equipment rack is used, we recommend locating the ampliﬁer(s) in the bottom of the rack and the preampliﬁer or other sensitive equipment at the top.

FCC COMPLIANCE NOTICE

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

CAUTION: Changes or modiﬁcations not expressly approved by the party responsible for complicance could void the user’s authority to operate the euqipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in 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 harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful 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 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 is connected.

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

Crown International, Inc.

Issued By: Crown International, Inc.

European Representative’s Name and Address:

David J. Budge 10 Harvest Close Yateley GU46 6YS United Kingdom

Equipment Type: Commercial Audio Power Ampliﬁers Family Name: CTs Family Model Names: CTs 4200USP/CN, CTs 8200USP/CN

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 20 cm EN 61000-3-2:2001 Limits for Harmonic Current Emissions (equipment input current less than or equal to 16 A per phase) EN 61000-3-3:2002 Limitation of Voltage Fluctuations and Flicker in Low-Voltage Supply Systems Rated Current less than or equal to16A EN 55022:2003 Limits and Methods of Measurement of Radio Disturbance Characteristics of ITE: Radiated, Class B Limits; Conducted, Class A 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 61000-4-2:2001 Electrostatic Discharge Immunity (Environment E2-Criteria B, 4k V Contact, 8k V Air Discharge) EN 61000-4-3:2001 Radiated, Radio-Frequency, Electromagnetic Immunity (Environment E2, criteria A) EN 61000-4-4:2001 Electrical Fast Transient/Burst Immunity (Criteria B) EN 61000-4-5:2001 Surge Immunity (Criteria B) EN 61000-4-6:2003 Immunity to Conducted Disturbances Induced by Radio-Frequency Fields (Criteria A)

EN 61000-4-11:2001 Voltage Dips, Short Interruptions and Voltage Variation Safety Standard: IEC 60065: 2001 7th Ed. Safety Requirements - Audio Video and Similar Electronic Apparatus

I certify that the product identiﬁed 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

1718 W. Mishawaka Road

Elkhart, Indiana 46517 U.S.A.

Andrew Stump Title: Director of Manufacturing

DECLARATION of CONFORMITY

COMPLIANCE QUESTIONS ONLY:

Sue Whitﬁeld 574-294-8289 swhitﬁeld@crownintl.com

Date of Issue: Jan 1, 2006

page 2 page 3

Operation Manual

DUE TO LINE CURRENT HARMONICS, WE RECOMMEND THAT YOU CONTACT YOUR SUPPLY AUTHORITY BEFORE CONNECTION.

Table of Contents

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

1 kHz

CTs 4200USP/CN

20 Hz–20 kHz

Dual

4 Channels Driven

260W 180W 220W

215W 190W 220W

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

1 kHz 20 Hz–20 kHz1 Channel Driven

270W 220W 250W

225W 210W 245W

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

1 kHz 20 Hz–20 kHz

Bridge-Mono

2 Channel-Pairs Driven

520W 400W 220W

430W 380W 220W

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

1 kHz 20 Hz–20 kHz1 Channel-Pair Driven

560W 440W 250W

450W 420W 245W

Maximum Average Power

in watts with 0.1% THD.

Constant Voltage full bandwidth power ratings support

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

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

1 kHz

CTs 8200USP/CN

20 Hz–20 kHz

Dual

8 Channels Driven

200W 160W 200W

175W 155W 185W

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

1 kHz 20 Hz–20 kHz1 Channel Driven

270W 220W 250W

230W 220W 230W

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

1 kHz 20 Hz–20 kHz

Bridge-Mono

4 Channel-Pairs Driven

400W 320W 200W

350W 310W 185W

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

1 kHz 20 Hz–20 kHz1 Channel-Pair Driven

540W 440W 250W

460W 440W 230W

Maximum Average Power

in watts with 0.1% THD.

Constant Voltage full bandwidth power ratings support

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

CTs Multi-Channel Power Ampliﬁers

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

Declaration of Conformity ............................................................. 3

1 Welcome ...................................................... 5

1.1 Features ............................................................................. 5

1.2 How to Use This Manual ..................................................... 5

2 Setup .......................................................... 6

2.1 Unpack Your Ampliﬁer ....................................................... 6

2.2 Install Your Ampliﬁer ..........................................................6

2.3 Ensure Proper Cooling ....................................................... 6

2.4 Front Panel Controls and Indicators .................................... 7

2.5 Back Panel Controls and Connectors ................................. 8

2.6 CobraNet and Control Module:

Connectors, Indicators and Controls .................................... 9

2.7 Choose Input Wire and Connectors .................................... 10

2.8 Choose Output Wire and Connectors ................................. 10

2.9 Audio Wiring ...................................................................... 11

2.9.1 Dual 8/4 Mode ........................................................... 11

2.9.2 Dual 70V Mode .......................................................... 11

2.9.3 Bridge-Mono 16/8 Mode ........................................... 12

2.9.4 Bridge-Mono 100V Mode .......................................... 12

2.10 Network Wiring Rules ....................................................... 13

2.11 Network Wiring ................................................................. 13

2.12 Audio and Aux Wiring ....................................................... 13

2.13 Connect to AC Mains ........................................................ 13

2.14 Startup Procedure ............................................................. 13

page 4 page 5

3 Operation .....................................................14

3.1 Precautions ........................................................................14

3.2 CobraNet and Control Module Features ..............................15

4 Advanced Features .........................................21

4.1 Using the Aux Connector ...................................................21

4.1.1 Aux Output .................................................................21

4.1.2 Aux Input ....................................................................21

4.1.3 Listen Bus Wiring .......................................................21

4.2 Protection Systems ........................................................... 22

4.2.1 Thermal Level Control ............................................... 22

4.2.2 Fault .......................................................................... 22

4.2.3 Fault Isolation Topology (FIT) ....................................22

4.2.4 35-Hz High-Pass Filter .............................................. 22

4.2.5 AC Under-Voltage/Over-Voltage Protection ............... 22

4.2.6 Power Fuse ............................................................... 22

4.2.7 Inrush Limiting .......................................................... 22

4.2.8 Variable-speed Fans ..................................................22

4.2.9 Switching Power Supply ........................................... 22

4.2.10 Mode Switch ........................................................... 22

4.2.11 Bridge Mode Indicator.............................................. 22

4.2.12 Channel Level Control ............................................. 23

5 Troubleshooting ............................................ 24

6 Speciﬁcations .............................................. 27

7 AC Power Draw and Thermal Dissipation ............... 31

8 Network and CobraNet Basics ............................ 33

8.1. Network Basics ................................................................ 33

8.2 A Closer Look at CobraNet ................................................ 34

8.2.1 Fast Ethernet .............................................................. 34

8.2.2 Audio Specs .............................................................. 35

8.2.3 Bundles and Audio Channels ..................................... 35

8.2.4 The Conductor ........................................................... 35

8.2.5 Repeater Networks ..................................................... 35

8.2.6 Switched Networks ..................................................... 35

9 Service ....................................................... 36

9.1. International and Canada Service ..................................... 36

9.2 US Service ........................................................................ 36

9.2.1 Service at a US Service Center ................................... 36

9.2.2 Factory Service ......................................................... 36

9.2.3 Factory Service Shipping Instructions ........................ 36

9.2.4 Packing Instructions .................................................. 36

9.2.5 Estimate Approval ...................................................... 36

9.2.6 Payment of Non-Warranty Repairs..............................36

10 Warranty ................................................... 37

Product Registration ..................................................................... 41

Crown Factory Service Information Form ..................................... 43

Operation Manual

1 Welcome

Building on the foundation of the Com-Tech® Series, Crown’s CTs Series offers new ﬂexibility and value for installed sound applications. The Com-Tech Series were the ﬁrst to offer independent selection of high- and lowimpedance operation for a speciﬁc channel, and CTs Series ampliﬁers continue that tradition, with power levels and features carefully chosen to perfectly inte grate into ﬁxed install design requirements.

Thanks to the factory-installed CobraNet and Control Module, each ampliﬁer is a network component. It con nects to the audio control/monitor network using stan dard 100Mb Ethernet hardware. With this protocol, an audio system can be interconnected using standard off-the shelf 100 Mb Ethernet components (switches, Net work Interface Cards, and cables).

The Crown CTs 4200USP/CN and CTs 8200USP/CN include SmartAmp features and 3rd-generation DSPbased components. Their SHARC DSP processor gives the user an enormous amount of digital signal process ing. Audio routing, faders, meters, polarity & mute, input compressors, ﬁlters, multimode output limiters, error reporting, and load monitoring are all available. A built-in noise generator and sine-wave generator pro vide noise masking and test capabilities.

In addition, the ampliﬁer allows the transport of realtime digital audio via CobraNet™ over the same 100Mb Ethernet network that is used for ampliﬁer control and monitoring. This provides a simple to install, singleplug solution for control, monitoring, and fullband width audio distribution. The ampliﬁer can function independently from the network control. Once the pro cessing is conﬁgured, the unit’s non-volatile memory allows the ampliﬁer to continue to function with no external control.

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

1.1 Features

• Crown

Switching Power Supply for reduced weight

• High power-density, with eight channels in a 3U chassis and four channels in a 2U chassis

• Selectable constant-voltage (70V/100V) or lowimped ance (8/4 ohm) operation for each channel pair

• In the unlikely event of a channel failure, FIT (Fault Isola tion Topology) circuitry isolates faults within affected channels

• 35 Hz High-Pass Filter (70 Hz in CTs 4200) is automati cally inserted when the channel pair is set for constant-voltage operation. (corner frequency may be changed as a service option)

• Comprehensive array of indicators including Power and Data, along with Bridge, Ready, Signal, Clip, Thermal and Fault for each channel, provide accurate diagnostics

• Blue Power Indicator ﬂashes if the ampliﬁer shuts off due to an under-voltage or over-voltage condition on the AC mains

• Advanced protection circuitry guards against: shorted outputs, open circuits, DC, mismatched loads, general overheating, under-voltage or over-voltage, highfre quency overloads and internal faults

• Proven Crown AB+B Multi-Mode® output topology

• Continuously-variable-speed fans optimize cooling

efﬁ ciency

• Built-in CobraNet and Control Module connects to a CobraNet network. This allows a 100 Mbps Ethernet sin gle-plug solution for CobraNet audio, and HiQnet con trol and monitoring

• Analog audio inputs allow CobraNet network audio input, CobraNet audio backup, or a hardwire emergency override of CobraNet audio

• 24 bit digital to analog conversion with 32 bit, ﬂoating point DSP processing

• Up to 18 assignable ﬁlters per channel

• Over 2 seconds of delay available per channel

• Input compressors and output limiters for each

channel

• Noise generator for noise masking

• Sine generator

• Load supervision

• Full error reporting

• Firmware upgrades via the network

• 10 user selectable presets

• Reliable FLASH memory backup of all parameters

• Three Year, No-Fault, Fully Transferable Warranty

completely protects your investment and guaran tees its speciﬁcations

1.2 How to Use This Manual

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

We strongly recommend you read all instructions, warnings and cautions contained in this manual. Also, for your protection, please send in your warranty reg istration card today, or register online at www. crownaudio.com. And save your bill of sale—it’s your ofﬁcial proof of purchase.

CTs Multi-Channel Power Ampliﬁers

Power

Data

Bridge34Bridge

Fault

Thermal

Clip

Signal

Ready

CTs Multi-Channel Power Ampliﬁers

2 Setup

2.1 Unpack Your Ampliﬁer

Please unpack and inspect your ampliﬁer 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

Rack for mounting ampliﬁer (or a stable surface for stacking)

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

manual.

2.2 Install Your Ampliﬁer

CAUTION: Before you begin, make sure your ampliﬁer 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 2.1 for ampli ﬁer dimensions.

You may also stack amps without using a cabinet.

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

2.3 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 ampliﬁer sides, and the back of the rack should be open.

Figure 2.2 illustrates standard ampliﬁer airﬂow.

2 Setup (continued)

2.4 Front Panel Controls and Indicators

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

A. Bridge Mode Indicator

Yellow LED, one per channel pair, illuminates when the channel pair’s Mode Switch is set to the “Bridge” position. If Mode switch is changed while ampliﬁer is powered up, Bridge LED will ﬂash, indicating that the ampliﬁer must be powered off and on to reset the Mode.

B. Ready Indicator

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

C. Signal Indicator

Green LED, one per channel, illuminates to indicate the presence of analog input signals above –40 dBu.

D. Clip Indicator

Red LED, one per channel, illuminates when the THD of the channel’s output signal rises to a level typically considered as the onset of audible clipping. The Clip Indicator also will illuminate during Thermal Level Control (TLC) or input overload.

E. Thermal Indicator

Red LED, one per channel, ﬂashes when the channel has shut down due to thermal stress or overload. If the power supply goes into thermal overload, all channel LEDs will ﬂash.

F. Fault Indicator

Red LED, one per channel, illuminates when the ampliﬁer output channel has stopped operating.

G. Ventilation Grille

Front-to-rear forced airﬂow.

H. Data Indicator

Yellow LED ﬂashes whenever a command addressed to the module is received. A similar LED is on the back panel, and the two LEDs ﬂash simultaneously.

I. Power Indicator

Blue LED indicates ampliﬁer has been turned on and AC power is available. Indicator also ﬂashes if the ampliﬁer shuts off due to an under/over-voltage condition on the AC mains.

J. Power Switch

Ampliﬁer is on when the switch is in the IN position.

Figure 2.2 Airﬂow

Figure 2.1 Dimensions

Left: CTs 4200USP/CN Right: CTs 8200USP/CN

Figure 2.3 CTs 8200USP/CN Front Panel

page 6 page 7

Operation Manual

CTs Multi-Channel Power Ampliﬁers

2 Setup (continued)

2.5 Back Panel Controls and Connectors

Note: CTs 8200USP/CN is shown. Some CTs 4200USP/CN features are in different loca tions.

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, ﬁrst remove the touch-proof cover plate covering the terminal strip by removing the screw which holds it in place.

M. USP/CN Module

Built into the ampliﬁer, this module allows con nection to a CobraNet network. Please see Sec tion 2.6 for details.

N. Channel Level Controls

One 21-position detented rotary potentiometer per channel, ranging from inﬁnity (-70 dB) to 0 dB attenuation. Refer to Section 4.2.12 for precise dB attenuation increments for each detent.

O. Input Connectors

Removable Phoenix-style barrier connectors for balanced input. Also can be used as a CobraNet input or a backup for Cobranet (see Section

3.2.6).

P. Mode Switch

Used on each consecutive pair of channels, this four-position switch is used to select the ampliﬁer’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 ampliﬁer before change the Modeswitch setting. If this is not done, the Bridge

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

Q. Cooling Vents

Front-to-rear forced airﬂow.

2 Setup (continued)

2.6 CobraNet and Control Module: Connectors, Indicators and Con trols

A. AUX Connector

AUX input, AUX output, and Foldback. See Sections 3.2.7, 3.2.8, and 4.1.

B. Preset Indicator

Signals the number of the current preset, if active, by ﬂashing a series of ﬂashes equal to the current preset number. See Section

3.2.2.

C. Reset/Preset Switch

Activated by inserting a small item, such as a paper clip, this switch is used to change presets, restore settings to factory default or restore all the presets to the factory defaults. During operations of the switch, the Data indicator ﬂashes as an aid to the user. See Section 3.2.9.

D. Data Indicator

Flashes when the ampliﬁer receives a valid command that is addressed to the ampliﬁer. See Section 3.2.1.

E. CobraNet Network Connectors

The dual RJ45 CobraNet connectors allow a Primary & Secondary connection to the 100 Mbps Ethernet network. Should the Primary connection lose link activity with the net work, the module will automatically switch to the Secondary connection to ensure uninterrupted audio and control. The indicators on the RJ45 connectors display network information concerning the Ethernet and CobraNet connections. See Sections

3.2.3, 3.2.4, and 3.2.5.

page 8 page 9

Figure 2.4 CTs 8200 USP/CN Back Panel

(Shown with Touch-proof Cover Removed)

Operation Manual

Figure 2.5 USP/CN Controls, Indicators and Connectors

(Note: Actual Product Artwork May Vary Slightly)

CTs Multi-Channel Power Ampliﬁers

CH 4

DUAL DUAL

BRIDGE

CH 3

CH 2

DUAL DUAL

BRIDGE

CH 1

CH 4

DUAL DUAL

BRIDGE

CH 3

CH 2

DUAL DUAL

BRIDGE

CH 1

70V

CTs Multi-Channel Power Ampliﬁers

2 Setup (continued)

2.7 Choose Input Wire and Connectors

If you will be connecting an analog audio signal to the CTs ampliﬁer, please read this section. Figure 2.6 shows connector pin assignments for balanced wiring, and Figure 2.7 shows connector pin assignments for unbalanced wir ing.

When possible, use balanced wiring for signal input, which provides better rejection of unwanted noise and hum. For more information, refer to the Crown Ampliﬁer Application Guide, available online at www.crownaudio.com

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

2.8 Choose Output Wire and Connectors

Crown recommends using professionally constructed, high-quality, two- or four-conductor, heavy gauge speaker wire and connectors. You may use ter minal spade lugs or bare wire for your output connectors (see Figure 2.8). CTs ampliﬁer terminal strips accept up to 10 AWG terminal forks which ﬁt over a #8 screw. For best results, Crown recommends Panduit part #PV10-10LF-L or equivalent terminal spade lug. Screw spacing is shown in Figure 2.8.

To connect outputs, ﬁrst 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 ampliﬁer 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 ampliﬁer, or damage to the ampliﬁer may result.

CAUTION: Never use shielded cable for output wiring.

Figure 2.6 Balanced Input Connector Wiring

See the Crown Ampliﬁer Appli cation Guide, available

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

Figure 2.7 Unbalanced Input Connector Wiring

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

Output panel

shown with

touch-proof

cover plate

removed.

Figure 2.8 Output Connector Wiring

(Typical of Two C hannels)

2 Setup (continued)

2.9 Audio Wiring

CAUTION: Never change the position of the Mode Switch while the ampliﬁer power is on.

2.9.1 Dual 8/4 Mode

Typical analog input and output wiring, along with level control and Mode Switch settings are shown in Figure 2.9. Make sure the Mode switch is set to the “Dual 8/4” position. Cobranet

input wiring is covered in Section 2.11.

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

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

to ampliﬁer Channel 1 positive terminal; repeat for negative (–). Repeat each channel wir ing as for Channel 1.

2.9.2 Dual 70V Mode

CAUTION: Never change the position of the Mode Switch while the ampliﬁer power is on.

Typical input and output wiring, along with level control and Mode Switch settings are shown in Figure 2.10. 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.

See the Crown Ampliﬁer 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.

Figure 2.9 System Wiring and Control Settings, Dual Mode, 8/4 Ohm

Output panel

shown with

touch-proof

cover plate

removed.

Figure 2.10 System Wiring and Control Settings, Dual Mode, 70V

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Operation Manual

CTs Multi-Channel Power Ampliﬁers

CH 4

DUAL DUAL

BRIDGE

CH 3

CH 2

DUAL DUAL

BRIDGE

CH 1

CH 4

DUAL DUAL

BRIDGE

CH 3

CH 2

DUAL DUAL

BRIDGE

CH 1

100V

CTs Multi-Channel Power Ampliﬁers

2 Setup (continued)

2.9.3 Bridge-Mono 16/8 Mode

CAUTION: Never change the position of the Mode Switch while the ampliﬁer power is on.

Typical analog input and output wiring, along with level control and Mode Switch settings are shown in Figure 2.11. 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.

2.9.4 Bridge-Mono 100V Mode

CAUTION: Never change the position of the Mode Switch while the ampliﬁer power is on.

Typical analog input and output wiring, along with level control and Mode Switch settings are shown in Figure 2.12. 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.

Figure 2.11 System Wiring and Control Settings, Bridge-Mono Mode, 16/8 Ohm.

Figure 2.12 System Wiring and Control Settings, Bridge-Mono Mode, 100V

See the Crown

Ampliﬁer Appli cation Guide, available

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

2 Setup (continued)

2.10 Network Wiring Rules

IMPORTANT: Please read the wiring rules below before installing the wiring.

Connect each device to the network through its own cable in a Star Network (Figure 2.13). Do not connect them in a serial fashion.

Make sure each device has its own Category 5 certiﬁed cable connecting it to a central concentrator, most often a switch.

2.11 Network Wiring

Use the cable to connect the Primary CobraNet connector to a 100 Mb port on the Ethernet switch that is used to form the CobraNet network. For more detail, see Section

3.2.3. We highly recommend that the CobraNet be a stan dalone or separate-network LAN.

Crown strongly recommends the use of a 100 Mb Ether net network for control and monitoring.

If network redundancy is required, use a standard CAT5 cable to connect the Secondary CobraNet connector to a 100Mb port on the auxiliary CobraNet network.

HiQnet control is available over the CobraNet network using Harman Pro System Architect software. The soft ware can set up CobraNet audio routing and addressing.

2.12 Audio and Aux Wiring

1. Connect the Audio Input Wiring. The ampliﬁer is equipped with removable barrier block connectors for each channel’s input. See Section 2.7 for more detail on audio wiring.

In System Architect, the analog balanced audio inputs can be set up to act either as CobraNet backup, an emer gency override of CobraNet audio, or as an audio input to the CobraNet network.

2. Connect the AUX wiring if used. See Section 4.1 for more information.

2.13 Connect to AC Mains

Connect your ampliﬁer 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 ampliﬁer; 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 connection by using an adapter or other methods.

Ampliﬁers don’t create energy. The AC mains voltage and current must be sufﬁcient to deliver the power you expect. If the AC line voltage varies out of an acceptable range, the ampliﬁer’s power supply turns off and the blue Power LED ﬂashes. The ampliﬁer will turn back on when the AC line voltage returns to safe operating levels. Fig ure 2.14 provides voltage limits for all ampliﬁer AC volt age

conﬁgurations. Also, the ampliﬁer must be run within the speciﬁed mains frequency requirements (indicated on the ampliﬁer’s back panel label). If you are unsure of the output voltage of your AC mains, please consult your electrician.

The various models have the following under-voltage limits and over-voltage limits:

Models

100VAC

(CTs 8200USP/

CN only)

120 VAC units 108VAC 132VAC

Under-Voltage

Limit

90VAC 110VAC

Over-Voltage

Limit

Figure 2.13 An Example of a Star Network

220V/230V/240V units 198VAC 264VAC

2.14 Startup Procedure

Use the following procedure when ﬁrst turning on your ampliﬁer:

1. Turn down the level of your audio source.

2. Turn down the level controls of the ampliﬁer.

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

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

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

6. Turn down the level of your audio source to its nor mal range.

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

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Operation Manual

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