Crown CTs 600 User Manual

CTs 2-Channel Series

CTs 600

CTs 1200

Operation Manual

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.

Some models may be exported under the name Amcron.®
© 2005 by Crown Audio®, Inc. 1718 W. Mishawaka Rd., Elkhart, Indiana 46517-9439 U.S.A. Telephone: [phone]	134433-6
	7/05

CTs 2-Channel Power Amplifiers

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 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, 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 powersupply 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)To reduce the risk of fire or electric shock, do

not expose this apparatus to rain or moisture. 16) Do not expose to dripping or splashing. Do

not place objects filled with liquid on unit.

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.

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.

IMPORTANT

CTs Series amplifiers require Class 2 output wiring.

MAGNETIC FIELD

CAUTION! Do not locate sensitive high-gain equipment such as preamplifiers or tape decks 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.

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.

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 operation 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.

page 2

Operation Manual

CTs 2-Channel Power Amplifiers

Crown International, Inc.

DECLARATION of CONFORMITY

ISSUED BY: Crown International, Inc.	FOR COMPLIANCE QUESTIONS ONLY: Sue Whitfield
1718 W. Mishawaka Road	574-294-8289
Elkhart, Indiana 46517 U.S.A.	[e-mail]
European Representative's Name and Address:
Nick Owen
35, Bassets Field
Thornhill
Cardiff. South Glamorgen
CF14 9UG United Kingdom

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

Signed

Larry Coburn
Title: Senior Vice President of Manufacturing	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

CTs 2-Channel Power Amplifiers

Table of Contents

Important Safety Instructions ..........................................................		2	5.1.3 Fault ..........................................................................	15
Declaration of Conformity ..............................................................		3	5.1.4 High-Pass Filters ......................................................	15
1 Welcome ......................................................		5	5.1.5 Low-Pass Filters .......................................................	15
1.1	Features .............................................................................	5	5.1.6 AC Under/Over Voltage Protection ............................	15
2 How to Use This Manual ....................................		6	5.1.7 Circuit Breaker ..........................................................	15
3 Setup ...........................................................		7	5.1.8 DC Output Servo .......................................................	15
3.1	Unpack Your Amplifier .......................................................	7	5.1.9 Inrush Limiting ..........................................................	15
3.2	Install Your Amplifier .........................................................	7	5.1.10 Variable-speed Fans ................................................	15
3.3	Ensure Proper Cooling .......................................................	7	5.2 Advanced Features .............................................................	15
3.4	Choose Input Wire and Connectors ....................................	8	5.2.1 Switching Power Supply ...........................................	15
3.5	Choose Output Wire and Connectors .................................	8	5.2.2 Input Compressor .....................................................	15
3.6	Wire Your System ..............................................................	9	5.2.3 Sleep Circuit ..............................................................	15
	3.6.1 Dual 8/4/2 Mode .......................................................	9	5.2.4 Input Sensitivity Switches .........................................	16
	3.6.2 Bridge-Mono 16/8/4 Mode ........................................	9	5.3 Options ..............................................................................	16
	3.6.3 Dual 70V/100V Mode ................................................	10	5.3.1 Nominal Attenuation Settings ....................................	17
	3.6.4 Bridge-Mono 140V/200V Mode ................................	10	6 Troubleshooting...............................................	18
	3.6.5 Dual Mode with “Y” Input ..........................................	11	7 Specifications .................................................	20
3.7	Connect to AC Mains .........................................................	12	8 AC Power Draw and Thermal Dissipation .................	24
3.8	Startup Procedure ..............................................................	12	9 Service .........................................................	28
4 Operation ......................................................		12	9.1 International and Canada Service ........................................	28
4.1	Precautions ........................................................................	12	9.2 US Service ...........................................................................	28
4.2	Front Panel Controls and Indicators ...................................	13	9.2.1 Service at a US Service Center ...................................	28
4.3	Back Panel Controls and Connectors .................................	14	9.2.2 Factory Service ..........................................................	28
5 Advanced Features and Options ...........................		15	9.2.3 Factory Service Shipping Instructions ........................	28
5.1	Protection Systems ............................................................	15	9.2.4 Packing Instructions....................................................	28
	5.1.1 Thermal Level Control (TLC) .....................................	15	9.2.5 Estimate Approval .......................................................	28
	5.1.2 Junction Temperature Simulation (JTS) .....................	15	9.2.6 Payment of Non-Warranty Repairs ..............................	28
			10 Warranty ......................................................	29
			Crown Audio Factory Service Information Form .............................	31

page 4

Operation Manual

CTs 2-Channel Power Amplifiers

CTs 600	* 20 Hz–20 kHz
	Power
2-ohm Dual (per ch.)	150W
4-ohm Dual (per ch.)	300W
8-ohm Dual (per ch.)	300W
16-ohm Dual (per ch.)	300W
70V Dual (per ch.)	300W
4-ohm Bridge	300W
8-ohm Bridge	600W
16-ohm Bridge	600W
140V Bridge	600W

*20 Hz–20 kHz Power: refers to maximum average power in watts from 20 Hz

to 20 kHz with 0.1% THD.

CTs 1200	* 20 Hz–20 kHz
	Power
2-ohm Dual (per ch.)	250W
4-ohm Dual (per ch.)	600W
8-ohm Dual (per ch.)	600W
16-ohm Dual (per ch.)	300W
70V Dual (per ch.)	600W
4-ohm Bridge	500W
8-ohm Bridge	1200W
16-ohm Bridge	1200W
140V Bridge	1200W

*20 Hz–20 kHz Power: refers to maximum average power in watts from 20 Hz to 20 kHz with 0.1% THD.

1 Welcome

Building on the foundation of the Com-Tech ® Series, the Crown® CTs Series offers new flexibility and value for installed sound. The ComTech Series was the first to offer independent selection of highand low-impedance 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 low-imped- ance (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 ™ (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)

CTs 2000		* 20 Hz–20 kHz
		Power
2-ohm Dual (per ch.)		1000W
4-ohm Dual (per ch.)		1000W
8-ohm Dual (per ch.)		1000W
16-ohm Dual (per ch.)		625W
70V Dual (per ch.)		1000W
100V	Dual (per ch.)	1000W
4-ohm Bridge		2000W
8-ohm Bridge		2000W
16-ohm Bridge		2000W
140V	Bridge	2000W
200V	Bridge	2000W

*20 Hz–20 kHz Power: refers to maximum average power in watts from 20 Hz

to 20 kHz with 0.35% THD.

CTs 3000		* 20 Hz–20 kHz
		Power
2-ohm Dual (per ch.)		1500W
4-ohm Dual (per ch.)		1500W
8-ohm Dual (per ch.)		1250W
16-ohm Dual (per ch.)		625W
70V Dual (per ch.)		1500W
100V	Dual (per ch.)	1500W
4-ohm Bridge		3000W
8-ohm Bridge		3000W
16-ohm Bridge		2500W
100V	Bridge	3000W
200V	Bridge	3000W

*20 Hz–20 kHz Power: refers to maximum average power in watts from 20 Hz

to 20 kHz with 0.35% THD.

Operation Manual

page 5

CTs 2-Channel Power Amplifiers

1 Welcome

Features (continued from page 4)

• 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.

page 6

•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.

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.

Operation Manual

CTs 2-Channel Power Amplifiers

3 Setup

3.1 Unpack Your Amplifier

3.2 Install Your Amplifier

3.3 Ensure Proper Cooling

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

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.

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.

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

FRONT

Figure 3.1 CTS 2-Channel Series Dimensions

Operation Manual

page 7

CTs 2-Channel Power Amplifiers

3Setup

3.4Choose 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.

Crown recommends using professionally constructed, high-quality, twoor 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.

page 8

Figure 3.3

Balanced Input

Connector Wiring

Figure 3.4

Unbalanced Input

Connector Wiring

Figure 3.6 How to Remove the Two-Holed

Barrier-Block Cover

Figure 3.5 Typical Output Connector Wiring

Operation Manual

CTs 2-Channel Power Amplifiers

3Setup

3.6Wire 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.

Figure 3.8 Attenuator and Mode-

Switch Settings for Dual Mode

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.

Always route the input and output wires in

Figure 3.7 System Wiring, Dual Mode.

separate bundles.

Figure 3.10 Attenuator and Mode-

Switch Settings for Bridge-Mono Mode

Figure 3.9 System Wiring, Bridge-Mono Mode

Operation Manual

page 9

CTs 2-Channel Power Amplifiers

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.

.

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

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.

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

page 10

Figure 3.12 Attenuator and Mode-Switch

Settings for 70V/100V Operation

Always route the input and output wires in separate bundles.

Figure 3.14 Attenuator and Mode-Switch

Settings for 140V/200V Operation

Operation Manual