CTs 600 Audio Professional Power Amplifiers

Product Information

The CTs 2-Channel Series consists of the following power
amplifiers:

• CTs 600
• CTs 1200
• CTs 2000
• CTs 3000

The amplifiers are manufactured by Crown Audio, Inc., located at
1718 W. Mishawaka Road Elkhart, Indiana 46517, USA. The European
representative’s name and address are David Budge, 10 Harvest
Close, Yateley GU46 6YS, United Kingdom.

The CTs amplifiers comply with the safety standard EN
60065:1998, which covers safety requirements for audio-video and
similar electronic apparatus. They also conform to 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.

The Director of Manufacturing at Crown Audio, Inc., Andrew
Stump, has certified that the CTs amplifiers meet all the necessary
requirements.

Product Usage Instructions

Important Safety Instructions:

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
   ducts, or other apparatus that produce heat.

9. Do not expose the apparatus to rain or moisture.

10. Do not expose the equipment to dripping or splashing and ensure
    that no objects filled with liquids, such as vases, are placed on
    the equipment.

11. The mains plug of the power supply cord shall remain readily
    operable.

12. To prevent electric shock, do not remove top or bottom covers.
    There are no user-serviceable parts inside. Refer servicing to
    qualified service personnel.

13. To completely disconnect the 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.

Important Symbols:

The lightning bolt triangle symbol alerts the user to the risk
of electric shock. The exclamation point triangle symbol alerts the
user to important operating or maintenance instructions.

Magnetic Field Caution:

Do not locate sensitive high-gain equipment such as
preamplifiers directly above or below the CTs amplifiers. The
amplifiers have a high power density and generate a strong magnetic
field that can induce hum into unshielded devices nearby. It is
recommended to place the amplifiers at the bottom of an equipment
rack and sensitive equipment at the top to minimize
interference.

FCC Compliance Notice:

The CTs amplifiers comply with part 15 of the FCC rules. They
may not cause harmful interference and must accept any interference
received, including interference that may cause undesired
operation. Changes or modifications not approved by the responsible
party could void the user’s authority to operate the equipment.

CTs 2-Channel Series Operation Manual
CTs 600
CTs 1200
CTs 2000
CTs 3000
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: 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.
© 2010 by Crown Audio®, Inc. 1718 W. Mishawaka Rd., Elkhart, Indiana 46517-9439 U.S.A. Telephone: 574-294-8000

141280-1 1/09

CTs Power Amplifiers

Important Safety Instructions

Wichtige Sicherheitsinstruktionen

Importantes Instructions de Sécurité Instrucciones de Seguridad Importantes

IMPORTANT

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
registers, 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, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus. 11. Only use attachments/accessories specified by the manufacturer. 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 normally, 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.

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 INTERIOR. 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’ALIMENTATION RESTERA AISÉMENT FONCTIONNELLE.
PARA DESCONECTAR COMPLETAMENTE EL EQUIPO DEL SUMINSTRO ELECTRICO, DESCONECTE EL CABLE DE ALIMENTACION DE LA TOMA DE CA. LAS PATAS DEL CONECTOR 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 maintenance.
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.

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 Produktionsverdrahtung. Los amplificadores de la Serie CTs requieren de un cableado de salida 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 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 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:
·Reorientorrelocatethereceivingantenna. ·Increasetheseparationbetweentheequipmentandreceiver. ·Connecttheequipmentintoanoutletonacircuitdifferentfromthattowhichthe
receiver is connected.
·Consultthedealeroranexperiencedradio/TVtechnicianforhelp.

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Operation Manual

CTs Power Amplifiers

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

DECLARATION of CONFORMITY
FOR COMPLIANCE QUESTIONS ONLY: Sue Whitfield 574-294-8289 swhitfield@crownintl.com

Equipment Type: Commercial Audio Power Amplifiers 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 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

Andrew Stump Title: Director of Manufacturing

Date of Issue: March 1, 2002

Operation Manual

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

page 3

Table of Contents
page 4

Important Safety Instructions ……………………………….. 2 Declaration of Conformity ……………………………………. 3 1 Welcome ………………………………….. 5
1.1 Features ………………………………………………….. 5 2 How to Use This Manual …………………… 6 3 Setup ………………………………………. 7
3.1 Unpack Your Amplifier ………………………………. 7 3.2 Install Your Amplifier …………………………………. 7 3.3 Ensure Proper Cooling ………………………………. 7 3.4 Choose Input Wire and Connectors ……………… 8 3.5 Choose Output Wire and Connectors …………… 8 3.6 Wire Your System ……………………………………… 9
3.6.1 Dual 8/4/2 Mode ……………………………….. 9 3.6.2 Bridge-Mono 16/8/4 Mode …………………..9 3.6.3 Dual 70V/100V Mode …………………………. 10 3.6.4 Bridge-Mono 140V/200V Mode …………… 10 3.6.5 Dual Mode with “Y” Input ……………………. 11 3.7 Connect to AC Mains ………………………………… 12 3.8 Startup Procedure …………………………………….. 12 4 Operation ………………………………….. 12 4.1 Precautions ……………………………………………… 12 4.2 Front Panel Controls and Indicators …………….. 13 4.3 Back Panel Controls and Connectors …………… 14 5 Advanced Features and Options …………… 15 5.1 Protection Systems …………………………………… 15 5.1.1 Thermal Level Control (TLC) ……………….. 15 5.1.2 Junction Temperature Simulation (JTS)….. 15 5.1.3 Fault ………………………………………………… 15 5.1.4 High-Pass Filters ………………………………. 15

CTs Power Amplifiers
5.1.5 Low-Pass Filters ……………………………….. 15 5.1.6 AC Under/Over Voltage Protection ……….. 15 5.1.7 Circuit Breaker ………………………………….. 15 5.1.8 DC Output Servo ……………………………….. 15 5.1.9 Inrush Limiting ………………………………….. 15 5.1.10 Variable-speed Fans …………………………. 15 5.2 Advanced Features ……………………………………. 15 5.2.1 Switching Power Supply …………………….. 15 5.2.2 Input Compressor ……………………………… 15 5.2.3 Sleep Circuit ………………………………………15 5.2.4 Input Sensitivity Switches …………………… 16 5.3 Options …………………………………………………… 16 5.3.1 Nominal Attenuation Settings ………………. 17 6 Troubleshooting……………………………. 18 7 Specifications ……………………………… 20 8 AC Power Draw and Thermal Dissipation….. 24 9 Service …………………………………….. 28 9.1. International and Canada Service ……………….. 28 9.2 US Service ………………………………………………. 28 9.2.1 Service at a US Service Center ……………… 28 9.2.2 Factory Service …………………………………. 28 9.2.3 Factory Service Shipping Instructions…….28 9.2.4 Packing Instructions …………………………… 28 9.2.5 Estimate Approval ………………………………. 28 9.2.6 Payment of Non-Warranty Repairs…………. 28 10 Warranty …………………………………. 29 Factory Service Information Form …………………………. 31 Product Registration Form……………………………………. 33
Operation Manual

CTs Power Amplifiers Operation Manual

1 Welcome
Building on the foundation of the Com-Tech ® Series, the Crown®CTs Series offers new flexibility and value for installed sound. The Com-Tech Series was 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 integrate into fixed install design requirements.
Modern power amplifiers 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 amplifiers include a number of features which require some explanation before they can be used to their maximum advantage.
Please take the time to study this manual so that you can obtain the best possible service from your amplifier.
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 selectable for each channel. Choose lowimpedance (4/8 ohm), constant-voltage (70V/100V/140V/200V), or 26 dB.
· TLC protection circuitry protects the amplifier 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 shutting the channel down. (Not applicable to BCA amplifiers as they are inherently protected.)
· P I P 2 TM (Programmable Input Processor) connector accepts accessory modules that tailor the amplifier to suit specific applications.
· Removable terminal block input connectors, with “Y” Input Switch in the standard PIP2-BBY module.
(Continued on next page)

page 5

1 Welcome

Features (continued from page 5)
· Switchable high-pass filter for each channel provides low-frequency roll off to eliminate step down transformer saturation when used in distributed systems.
· Comprehensive array of indicators including Power, Data, and Bridge; along with 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 /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 topologies offer the best in amplifier 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 amplifiers.
· Continuously-variable fans optimize cooling efficiency.
· Three Year, No-Fault, Fully-Transferable Warranty completely protects your investment and guarantees its specifications.

CTs Power Amplifiers
2 How to Use This Manual
This manual provides you with the necessary information 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 condition. 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 registration card today. And save your bill of sale–it’s your official proof of purchase.

CTs Power Amplifiers
3 Setup

3.1 Unpack Your Amplifier Please unpack and inspect your amplifier for any damage that may have occurred during transit. If damage is found, notify the transportation company immediately. Only you can initiate 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 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.

3.2 Install Your Amplifier CAUTION: Before you begin, make sure your amplifier 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 amplifier dimensions.
You may also stack amps without using a cabinet.
NOTE: When transporting, amplifiers 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 amplifier sides, and the back of the rack should be a minimum of four inches (10.2 cm) from the amplifier back panel.
Figure 3.2 illustrates standard amplifier airflow.

Figure 3.2 Airflow

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Operation Manual

Operation Manual

Figure 3.1 CTs 2-Channel Series Dimensions

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3 Setup

page 8

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.
NOTE: Custom wiring should only be performed by qualified personnel.

3.5 Choose Output Wire and
Connectors
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 amplifier.

3. Tighten screws.

Crown recommends using professionally constructed, 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 recommends Panduit part

PV10-10LF-L or equivalent terminal fork. Screw spacing is shown in Figure

3.5.

Using the guidelines below, select the appropriate size of wire based on the distance from amplifier 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

CAUTION: Never use shielded cable for output wiring.

Replace output cover after output wiring is complete.

Figure 3.3 Balanced Input Connector Wiring
Figure 3.4 Unbalanced Input Connector Wiring

CTs Power Amplifiers

Figure 3.5 Typical Output Connector Wiring

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

CTs Power Amplifiers
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” position 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 necessary. The amplifier’s channel outputs are still independent. 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 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 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. Refer to Section 3.5 for output connector pin assignments. NOTE: Crown provides a reference of wiring pin assignments for commonly used connector types in the Crown Amplifier 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.
Operation Manual

Figure 3.7 System Wiring, Dual Mode.

Figure 3.8 Attenuator and ModeSwitch Settings for Dual Mode
Always route the input and output wires in separate bundles.

Figure 3.9 System Wiring, Bridge-Mono Mode

Figure 3.10 Attenuator and ModeSwitch Settings for Bridge-Mono Mode
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3 Setup
3.6.3 Dual 70V/100V Mode Typical input and output wiring, along with Attenuator and Mode Switch settings are shown in Figures 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 channel of output connectors to speakers that have the appropriate transformers. .
3.6.4 Bridge-Mono 140V/200V Mode Typical input and output wiring, along with Attenuator and Mode Switch settings are shown in Figures 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 speakers 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.
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CTs Power Amplifiers

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

Figure 3.12 Attenuator and Mode-Switch Settings for 70V/100V Operation
Always route the input and output wires in separate bundles.

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

Figure 3.14 Attenuator and Mode-Switch Settings for 140V/200V Operation
Operation Manual

CTs Power Amplifiers
3 Setup
3.6.5 Dual Mode with “Y” Input See Figure 3.14. This configuration 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 Channel 2 input can be used to daisy-chain to another amplifier.

Figure 3.15 System Wiring for “Y” Input Mode
Always route the input and output wires in separate bundles.
Figure 3.16 Attenuator and Mode-Switch
Settings for “Y” Input Mode

Operation Manual

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3 Setup
page 12

3.7 Connect to AC Mains On the back panel, check whether your amplifier is labeled for 120V or 220-240V AC mains. Connect your amplifier to the corresponding 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, with the amplifier 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.
Amplifiers don’t create energy. The AC mains voltage and current must be sufficient to deliver the power you expect. Check the amplifier’s back-panel label which specifies 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 frequency 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 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. 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 amplifier until the desired loudness or power level is achieved. Verify that the Signal LED is flashing.
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 amplifier and disconnect the power cord.
For help with determining your system’s optimum gain structure (signal levels) please refer to the Crown Amplifier Application Guide, available online at www.crownaudio.com.

4 Operation
4.1 Precautions Your amplifier is protected from internal and external faults, but you should still take the following precautions for optimum performance and safety:
1. Before use, your amplifier first must be configured for proper operation, including input and output wiring hookup. Improper wiring can result in serious operating difficulties. For information on wiring and configuration, please consult the Setup section of this manual or, for advanced setup techniques, consult Crown’s Amplifier 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 amplifier with the red Clip LEDs constantly flashing.
7. Do not overdrive the mixer, which will cause clipped signal to be sent to the amplifier. Such signals will be reproduced with extreme accuracy, and loudspeaker damage may result.
8. Do not operate the amplifier with less than the rated load impedance. Due to the amplifier’s output protection, such a configuration may result in premature clipping and speaker damage.
Remember: Crown is not liable for damage that results from overdriving other system components.

CTs Power Amplifiers Operation Manual

CTs Power Amplifiers
4 Operation
4.2 Front Panel Controls and Indicators
A. Fault Indicator Red LED, one per channel, flashes when the amplifier output channel has stopped operating. Usually this means that the amplifier 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 amplifier’s input and output signal levels. From bottom to top the LEDs are:
D. Signal: input signal is above ­40 dBu.
E. ­20 dB: amplifier output is within 20 dB of clipping.
F. ­10 dB: amplifier 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 Thermal Level Control (TLC) limiting or when the input compressor/limiter is protecting the amplifier from input overload.
H. Cooling Vents Front-to-rear forced airflow.

Operation Manual

Figure 4.1 CTs 600 front panel.

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 flash when the AC line voltage is approximately 15% above or 25% below the nominal rated value.
J. Data Indicator Yellow LED indicates control activity This LED is driven by the IQ-PIP2 module via the PIP2 interface. Note: Data indicator flashes 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 13

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 amplifier from excessive AC current draw.
N. Reset Switch Resets the circuit breaker that protects the power supply.
O. Ventilation Grille Air flow is front to back. Do not block the ventilation grilles.
P. PIP TM 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 Sensitivity Switches. One 3-position switch per channel selects various sensitivity settings. See Section 5.2.4 for details and diagram.
Q. Mode Switch This two-position switch is used to select the amplifier’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 amplifier’s channel outputs are still independent. The “Y” Input Switch also can

CTs Power Amplifiers
be used to daisy-chain the signal to another amplifier. 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 filters.
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, protecting users from the connectors’ potentially high voltage. This cover is required for Class 2 wiring installations. See Section 3.5 for details on removing covers that have two holes.

page 14

Figure 4.2 CTs 2000 and 3000 Back Panel Controls and Connectors

Operation Manual

CTs Power Amplifiers
5 Advanced Features and Options
NOTE: For detailed information about these Crown amplifier features, please consult the Crown Amplifier Application Guide, available on the Crown website at www.crownaudio.com
5.1 Protection Systems Your Crown amplifier provides extensive protection and diagnostic capabilities, including thermal level control, fault indicators, high-pass filtering, DC protect, AC under/over voltage protection, inrush limiting, and variable-speed fans.
5.1.1 Thermal Level Control (TLC) If the amplifier becomes too hot for safe operation, the light will shine brightly and TLC will engage the input compressor. By compressing the input, the amplifier 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 amplifier shut down.
5.1.2 Junction Temperature Simulation (JTS) (CTs 600/1200 only) JTS circuitry simulates the operation of the amplifier’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 amplifier reliability.
Operation Manual

5.1.3 Fault The amplifier will light the Fault LED if the amplifier output stage stops operating. If this happens, see Section 8 for servicing information.
5.1.4 High-Pass Filters Very low frequency signals contain no useful musical energy, waste valuable amplifier power and headroom, and can be damaging to your speakers. Your Crown amplifier provides highpass filters to remove these signals from each channel’s output.
On the back panel are two 3-position 3rd-order high-pass filter switches (one per channel) with selections of Off, 35Hz and 70 Hz.
5.1.5 Low-Pass Filters Gaussian-approximation ultrasonic filters prevent ultrasonic feedback and HF burnout in drivers. This type of filter preserves transient response better than a Butterworth filter.
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 amplifier, 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 (within +15% / -25%).
5.1.7 Circuit Breaker A circuit breaker located near the IEC power inlet protects the amplifier 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.

5.1.9 Inrush Limiting A soft-start circuit in the power supply minimizes the amplifier’s current draw during power-on.
5.1.10 Variable-speed Fans Two continuously variable speed fans direct the airflow through the amplifier for cooling.
5.2 Advanced Features
5.2.1 Switching Power Supply Crown’s Switching Power Supply minimizes the amplifier’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) transformer because they first convert the AC up to a much higher frequency, thereby reducing waste. The power supply is voltage- specific, 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 shutting 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 15

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 amplifier 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 Specifications chapter lists the input sensitivity for the 26 dB gain setting.
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 amplifiers 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) modules provide flexible expansion features that can be added to customize the amplifier. PIP modules plug into the connector inside the back panel of the amplifier. PIP modules are available with features ranging from error-driven compressor/limiters to crossovers to remote control and monitoring via IQwicTM or System Architect software. Your amplifier is a PIP2 amplifier, 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 PIP modules.
Visit the Crown website at www.crownaudio.com, or contact Crown Customer Service, for descriptions of available PIP and PIP2 modules.

CTs Power Amplifiers
Figure 5.3 T-170V Figure 5.4 TP-170V (back view)

Figure 5.2 Input Sensitivity Switches for CTs 2000/3000
page 16

Operation Manual

CTs Power Amplifiers
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.

Attenuation in dB

Detent 0 (full CCW)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 (full CW)

26 dB OFF 48.0 36.0 24.0 21.0 18.0 15.0 13.5 12.0 10.5 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0.5 0.0

Tolerance (dB) — ±6 ±6 ±3 ±3 ±3 ±3 ±3 ±1.5 ±1.5 ±1.5 ±1.5 ±1.5 ±1 ±1 ±1 ±1 ±1 ±1
+1 ­5 —

4/8 ohm or 70/100V OFF 54.0 42.0 30.0 26.0 24.0 22.0 20.0 18.0 16.0 14.5 13.0 11.0 9.5 8.0 6.5 5.0 3.5 1.5 0.5 0.0

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

Operation Manual

page 17

6 Troubleshooting
page 18

CONDITION: Power indicator is off. POSSIBLE REASON · The amplifier has lost AC power. · The amplifier’s Power switch is off. · The amplifier is not plugged into the power
receptacle. · The amplifier 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 flashing. POSSIBLE REASON: · The AC line voltage has dropped below
20% or has risen above 10% of the nominal line voltage of the power supply.
CONDITION: Thermal indicator is on. POSSIBLE REASON: · The amplifier is becoming too hot for safe
operation. Allow amplifier to cool. Check for loads less than 2 ohms, and for excessive input levels. Check for proper ventilation and proper mode-switch setting.

CTs Power Amplifiers
CONDITION: Fault indicator is flashing. POSSIBLE REASON: · The amplifier channel has stopped
operating. 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 amplifier 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 distorted before it reaches the amplifier input. Check gain staging and output levels of the mixer or preamp.

CTs Power Amplifiers
6 Troubleshooting

“Off/Flashing/On” above means that the LED can be off, or flashing, or on.
Operation Manual

Operation Manual

CONDITION: No sound, even though the amp has power. Power LED is on without flashing and the amp is receiving an input signal. Signal indicator is flashing. POSSIBLE REASON: · Speakers not connected. · Open circuit due to speaker failure.
· There is a short on the amplifier 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.
CONDITION: No input signal. Signal indicator is not flashing even though audio is applied, and the channel is ready.. POSSIBLE REASON: · Input signal level is very low. · Level controls are turned down.

CONDITION: Data indicator not flashing, 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 flashes 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: · Amplifier is in bridge-mono mode.
“Off/Flashing/On” above means that the LED can be off, or flashing, or on.
page 19

7 Specifications

CTs Power Amplifiers

Minimum Guaranteed Power (20 Hz – 20 kHz) 2-ohm Dual (per ch.) 4-ohm Dual (per ch.) 8-ohm Dual (per ch.) 16-ohm Dual (per ch.) 70V Dual (per ch.) 100V Dual (per ch.) 4-ohm Bridge 8-ohm Bridge 16-ohm Bridge 100V Bridge 140V Bridge 200V Bridge
Performance Frequency Response (at 1 watt, 20 Hz – 20 kHz) Signal to Noise Ratio (ref. rated power, 20 Hz to 20 kHz, A-weighted) Total Harmonic Distortion (THD) at full rated power, from 20 Hz to 20 kHz 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 Crosstalk (below rated power)
20 Hz to 1kHz Common Mode Rejection (CMR) (20 Hz to 1 kHz, typical) DC Output Offset Input Impedance nominally balanced, nominally unbalanced

CTs 600 Power at 0.1% THD
150W 300W 300W 300W 300W 300W 300W 600W 600W 600W 600W 600W* CTs 600 ± 0.25 dB < 105 dB < 0.1% < 0.1%

3000
80 dB 50 dB < 2 mV 10 k ohms, 5 k ohms

• With T-170V or TP-170V.

CTs 1200 Power at 0.1% THD
250W 600W 600W 300W 600W 600W 500W 1200W 1200W 1200W 1200W 1200W* CTs 1200 ± 0.25 dB < 105 dB < 0.1% < 0.1%

3000
80 dB 50 dB < 2mV 10 k ohms, 5 k ohms

CTs 2000 Power at 0.35% THD
1000W 1000W 1000W 625W 1000W 1000W 2000W 2000W 2000W 2000W 2000W 2000W CTs 2000 ± 0.25 dB < 105 dB < 0.35% < 0.35%

3000
80 dB 50 dB < 2 mV 10 k ohms, 5 k ohms

CTs 3000 Power at 0.35% THD
1500W 1500W 1250W 625W 1500W 1500W 3000W 3000W 2500W 3000W 3000W 3000W CTs 3000 ± 0.25 dB < 105 dB < 0.35% < 0.35%

3000
80 dB 50 dB < 2 mV 10 k ohms, 5 k ohms

page 20

Operation Manual

CTs Power Amplifiers
7 Specifications
Performance Maximum Input Level
Before input compression Absolute maximum Load Impedance (Note: Safe with all types of loads) Stereo
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%) Power Draw at Idle (120 VAC mains) Overall Group Delay Cooling
Dimensions Width Height Depth
Net Weight Shipping Weight

• With T-170V or TP-170V.
  Operation Manual

CTs 600

CTs 1200

+20 dBu + 32 dBu

+20 dBu + 32 dBu

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

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

CTs 2000
+20 dBu + 32 dBu
2, 4, 8, 16, 70V, and 100V
4, 8, 16, 140V , 200V

CTs 3000
+20 dBu + 32 dBu
2, 4, 8, 16, 70V, and 100V
4, 8, 16, 140V, 200V

35:1 (31 dB) 20:1 (26 dB) 50:1 (34 dB)
1.4V 1.4V
4 ohm load: 1.74V. 8 ohm load: 2.46V 120V/60 Hz, 230V/50 Hz 24W (Standby Mode)
< 120 usec Continuously variable speed forced air, front-to-back airflow
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)

50:1 (34 dB) 20:1 (26 dB) 50:1 (34 dB)
1.4V 1.4V
4 ohm load: 2.46V. 8 ohm load: 3.47V 120V/60 Hz, 230V/50 Hz 24W (Standby Mode)
< 120 usec Continuously variable speed forced air, front-to-back airflow
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)

63.9:1 (36 dB) 20:1 (26 dB) 50:1 (34 dB) 50:1 (34 dB)
1.4V 1.4V 2.0V 4 ohm load: 3.17V. 8 ohm load: 4.48V
120V/60 Hz, 230V/50 Hz
35W (Standby Mode)
< 120 usec
Continuously variable speed forced air, front-to-back airflow
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)

71.4:1 (37 dB) 20:1 (26 dB) 50:1 (34 dB) 50:1 (34 dB)
1.4V 1.4V 2.0V 4 ohm load: 3.88V. 8 ohm load: 5.01V
120V/60 Hz, 230V/50 Hz
35W (Standby Mode)
< 120 usec
Continuously variable speed forced air, front-to-back airflow
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)

page 21

7 Specifications

CTs Power Amplifiers

CTs Power Amplifiers
7 Specifications

Figure 7.1 CTs 600/1200 Typical Frequency Response (1 W, 8 ohms)
Figure 7.3 CTs 600/1200 Typical Damping Factor vs. Frequency
page 22

Figure 7.2 CTs 600/1200 Typical Crosstalk vs. Frequency

Figure 7.4 CTs 2000/3000 Typical Frequency Response (1W)
Figure 7.6 CTs 2000/3000 Typical Damping Factor
vs. Frequency

Operation Manual

Operation Manual

Figure 7.5 CTs 2000/3000 Typical Crosstalk vs. Frequency
page 23

8 AC Power Draw and Thermal Dissipation

CTs Power Amplifiers

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.

At Idle 1/8th Power Pink Noise
Typical of program material just at clip.
1/3rd Power Pink Noise
Typical of program material with severe clipping.

Load

Rated Power

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

300×2 600 300×2 600 150×2 300 300×2 600

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

300×2 600 300×2 600 150×2 300 300×2 600

CTs 600

Line Current Line Current

120VAC

230VAC

5.8

2.9

7.4

3.7

7.0

3.5

4.2

2.1

8.6

4.3

11.3

5.6

10.8

5.4

6.5

3.3

watts in
60 461 631 583 336
716 968 964 527

Watts
watts out
0

dissapated
60

Thermal Dissipation

Btu/hr

kcal/hr

205

52

78

383

1307

330

78

554

1890

477

38

545

1859

469

75

261

892

225

200

516

1760

444

204

764

2608

657

102

862

2942

742

207

320

1091

275

CTs Power Amplifiers
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.

At Idle 1/8th Power Pink Noise
Typical of program material just at clip.
1/3rd Power Pink Noise
Typical of program material with severe clipping.

Load

Rated Power

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

600×2 1200 600×2 1200 250×2 500 600×2 1200

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

600×2 1200 600×2 1200 250×2 500 600×2 1200

CTs 1200

Line Current Line Current

120VAC

230VAC

7.6

3.8

10.0

5.0

8.8

4.4

7.6

3.8

11.5

5.7

15.5

7.8

13.4

6.7

11.5

5.7

watts in
60 641 872 1330 641
996 1372 1217 996

Watts
watts out
0

dissapated
60

Thermal Dissipation

Btu/hr

kcal/hr

205

52

157

484

1651

416

151

720

2458

620

405

925

3158

796

157

484

1651

416

403

593

2025

511

405

967

3300

832

168

1050

3582

903

403

593

2025

511

page 24

Operation Manual

Operation Manual

page 25

8 AC Power Draw and Thermal Dissipation

CTs Power Amplifiers

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.

At Idle (sleep mode) 1/8th Power Pink Noise
Typical of program material just at clip.
1/3rd Power Pink Noise
Typical of program material with severe clipping.

Load

Rated Power

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

1000×2 2000 1000×2 2000 1000×2 2000 1000×2 2000

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

1000×2 2000 1000×2 2000 1000×2 2000 1000×2 2000

CTs 2000

Line Current Line Current

120VAC

230VAC

6.6

3.3

7.0

3.5

7.2

3.6

6.7

3.4

11.3

5.6

12.3

6.2

13.7

6.9

11.6

5.8

watts in
40 546 563 602 639
980 1064 1190 990

Watts
watts out
0

dissapated
40

Thermal Dissipation

Btu/hr

kcal/hr

137

34

256

290

988

249

255

307

1049

264

251

351

1198

302

257

382

1304

329

676

304

1036

261

672

392

1338

337

705

485

1655

417

674

316

1080

272

CTs Power Amplifiers
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.

At Idle (sleep mode) 1/8th Power Pink Noise
Typical of program material just at clip.
1/3rd Power Pink Noise
Typical of program material with severe clipping.

Load

Rated Power

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

1000×2 2000 1000×2 2000 1000×2 2000 1000×2 2000

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

1250×2 2500 1500×2 3000 1500×2 3000 1500×2 3000

CTs 3000

Line Current Line Current

120VAC

230VAC

7.2

3.6

8.5

4.2

9.6

4.8

7.2

3.6

13.7

6.8

16.2

8.1

19.2

9.6

13.7

6.8

watts in
40 579 697 790 579
1196 1469 1686 1196

Watts
watts out
0

dissapated
40

Thermal Dissipation

Btu/hr
137

kcal/hr
34

313

266

907

229

381

316

1079

272

384

405

1384

349

313

266

907

229

835

360

1230

310

1010

459

1565

395

1024

662

2259

570

835

360

1230

310

page 26

Operation Manual

Operation Manual

page 27

CTs Power Amplifiers

9 Service

Crown amplifiers are quality units that rarely require servicing. Before returning your unit for service, please contact 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 qualified 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 United States of America. For information on Warranty outside of the U.S.A, please contact your local distributor.
9.1 International and Canada Service Service may be obtained from an authorized service center. (Contact your local Crown/Amcron representative or our office 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. Simply 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. Remember 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 serviceable 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 sending 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 responsibility for damaged goods and/or accessories that are sent with your unit.
1. Fill out and include the Crown Audio Factory Service Information sheet in the back of this manual.
2. Do not ship any accessories (manuals, cords, hardware, 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 minimum 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 warranty.
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 fill the foam-in-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 Service 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 notified by Crown Audio Inc. Units still in the possession 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

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Operation Manual

CTs Power Amplifiers
10 Warranty
5
YEAR

UNITED STATES & CANADA

SUMMARY OF WARRANTY
Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to you, the ORIGINAL PURCHASER and ANY SUBSEQUENT OWNER of each NEW Crown product, for a period of five (5) 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 Warranty.
*Warranty is only valid within the United States of America. For information on Warranty outside of the U.S.A, please contact your local distributor.
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 intentional 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
We will remedy any defect, regardless of the reason for failure (except as excluded), by repair, replacement, or refund. We may not elect refund unless you agree, or unless we are unable to provide 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 interest, insurance, closing costs, and other finance charges less a reasonable depreciation on the product from the date of original purchase. Warranty work can only be performed at our authorized 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 defective 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 foreign country and the port of entry in the United States including the return shipment, and all taxes, duties, and other customs fees for such foreign shipments.)
HOW TO OBTAIN WARRANTY
SERVICE
You must notify us of your need for warranty service 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 reasonable 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 authorized 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 RESULTING FROM SUCH A DEFECT. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATIONS OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.

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

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.

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CUT ON THIS LINE

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

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

*Warranty is only valid within the United States of America. For information on Warranty outside of the U.S.A, please contact your local distributor.

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

Crown Audio, Inc. 1718 W Mishawaka Rd Elkhart IN 46517

Fax: 574-294-8329

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 #: __
  PRODUCT INFORMATION

• MODEL e.g. IT8000, CDi1000, PCC160 ____ ____ ____ ____

• SERIAL # e.g. 8000000000 ____ ____ ____ ____

• PURCHASE DATE 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: ____
PRODUCT RETURN INFORMATION

Serial Number: ____ Purchase Date:

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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References

• Crown Audio - Professional Power Amplifiers | English
• Support | Crown Audio - Professional Power Amplifiers | English (US)

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