Crown CTs 600 User Manual
Operation Manual
CTs 2-Channel Series
CTs 600
CTs 1200
CTs 2000
CTs 3000
Obtaining Other Language Versions:
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:
IQwic, PIP and PIP2 are trademarks of Crown International. Other trademarks are the property of their respective owners.
© 2005 by Crown Audio®, Inc. 1718 W. Mishawaka Rd., Elkhart, Indiana 46517-9439 U.S.A. Telephone: 574-294-8000
Com-Tech, BCA, Crown, Crown Audio, Amcron and Multi-Mode are registered trademarks of Crown International.
To obtain information in another language about the use of this product, please contact your
Some models may be exported under the name Amcron.
®
134433-6
7/05
Important Safety Instructions
CTs 2-Channel Power Amplifiers
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.
This device complies with part 15 of the FCC rules. Operation is subject to the following
FCC COMPLIANCE NOTICE
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.
ISSUED BY: Crown International, Inc.
1718 W. Mishawaka Road
Elkhart, Indiana 46517 U.S.A.
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
DECLARATION of CONFORMITY
FOR COMPLIANCE QUESTIONS ONLY:
Date of Issue: March 1, 2002
Sue Whitfield
574-294-8289
swhitfield@crownintl.com
Operation Manual
Due to line current harmonics, we recommend that you contact your supply authority before connection.
page 3
Table of Contents
CTs 2-Channel Power Amplifiers
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
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
Crown Audio Factory Service Information Form .............................31
page 4
Operation Manual
CTs 2-Channel Power Amplifiers
20 Hz–20 kHz
*
CTs 600
2-ohm Dual (per ch.)
4-ohm Dual (per ch.)
8-ohm Dual (per ch.)
16-ohm Dual (per ch.)
70V Dual (per ch.)
4-ohm Bridge
8-ohm Bridge
16-ohm Bridge
140V Bridge
*20 Hz–20 kHz Power: refers to maximum
average power in watts from 20 Hz
to 20 kHz with 0.1% THD.
CTs 1200
2-ohm Dual (per ch.)
4-ohm Dual (per ch.)
8-ohm Dual (per ch.)
16-ohm Dual (per ch.)
70V Dual (per ch.)
4-ohm Bridge
8-ohm Bridge
16-ohm Bridge
140V Bridge
*20 Hz–20 kHz Power: refers to maximum
average power in watts from 20 Hz to 20 kHz
with 0.1% THD.
Power
150W
300W
300W
300W
300W
300W
600W
600W
600W
20 Hz–20 kHz
*
Power
250W
600W
600W
300W
600W
500W
1200W
1200W
1200W
1 Welcome
Building on the foundation of the Com-Tech®
Series, the Crown
bility and value for installed sound. The ComTech Series was the first to offer independent
selection of high- and 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.
®
CTs Series offers new flexi-
• 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-impedance (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.)
• PIP2™ (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)
20 Hz–20 kHz
*
CTs 2000
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
140V Bridge
200V Bridge
*20 Hz–20 kHz Power: refers to maximum
average power in watts from 20 Hz
to 20 kHz with 0.35% THD.
CTs 3000
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
200V Bridge
*20 Hz–20 kHz Power: refers to maximum
average power in watts from 20 Hz
to 20 kHz with 0.35% THD.
Power
1000W
1000W
1000W
625W
1000W
1000W
2000W
2000W
2000W
2000W
2000W
20 Hz–20 kHz
*
Power
1500W
1500W
1250W
625W
1500W
1500W
3000W
3000W
2500W
3000W
3000W
Operation Manual
page 5
1 Welcome
CTs 2-Channel Power Amplifiers
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-/overvoltage, high-frequency overloads and
internal faults.
• Legendary Crown class I (BCA®) and
class AB+B (Multi-Mode
ogies 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.
®
) output topol-
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.
page 6
Operation Manual
CTs 2-Channel 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
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.
Operation Manual
Figure 3.2 Airflow
FRONT
Figure 3.1 CTS 2-Channel Series Dimensions
page 7
3 Setup
3.4 Choose Input Wire
and Connectors
Figure 3.3 shows connector pin assignments for
balanced wiring, and Figure 3.4 shows connector pin assignments for unbalanced wiring.
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, 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 appropri-
ate 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
CTs 2-Channel Power Amplifiers
Figure 3.3
Balanced Input
Connector Wiring
Figure 3.4
Unbalanced Input
Connector Wiring
page 8
CAUTION: Never use shielded cable for
output wiring.
Replace output cover after output wiring
is complete.
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
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 ter-
minals 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.
Figure 3.8 Attenuator and Mode-
Switch Settings for Dual Mode
Figure 3.7 System Wiring, Dual Mode.
Always route the input and output wires in
separate bundles.
Figure 3.10 Attenuator and Mode-
Switch Settings for Bridge-Mono Mode
Operation Manual
Figure 3.9 System Wiring, Bridge-Mono Mode
page 9
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.
.
CTs 2-Channel Power Amplifiers
Figure 3.12 Attenuator and Mode-Switch
Settings for 70V/100V Operation
3.6.4 Bridge-Mono 140V/200V Mode
Typical input and output wiring, along with 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.
page 10
Figure 3.11 System Wiring and Y-Switch Setting for 70V/100V Operation
Figure 3.13 System Wiring and Y-Switch Setting for 140V/200V Operation
Always route the input and output wires in
separate bundles.
Figure 3.14 Attenuator and Mode-Switch
Settings for 140V/200V Operation
Operation Manual
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