Crown CTS 4200, CTS 8200 User Manual

Operation Manual

CTs Multi-Channel Series

CTs 4200

CTs 8200

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:

national. Other trademarks are the property of their respective owners.

©2004 by Crown Audio® Inc., P.O. Box 1000, Elkhart, Indiana 46515-1000 U.S.A. Telephone: [phone]

Crown, Crown Audio, Amcron, Com-Tech, IQ System, and Multi-Mode are registered trademarks of Crown Inter-

To obtain information in another language about the use of this product, please contact your

Some models may be exported under the name Amcron.

®

134434-5B

6/04

Important Safety
Instructions

CTs Multi-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. Do not
expose to dripping or splashing. Do not place
objects filled with liquid on unit.

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 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.

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.

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 instruction manual, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or televi­sion reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.

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

page 2

Operation Manual

CTs Multi-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
19 Clos Nant Coslech
Pontprennau
Cardiff
CF23 8ND United Kingdom

Equipment Type: Commercial Audio Power Amplifiers
Family Name: CTs
Model Names: CTs 4200A, CTs 8200A

EMC Standards:

EN 55103-1:1995 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 1: Emissions
EN 55103-1:1995 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 55022:1992 + A1: 1995 & A2:1997 Limits and Methods of Measurement of Radio Disturbance Characteristics of ITE: Radiated, Class B Limits; Conducted, Class B
EN 55103-2:1996 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 2: Immunity
EN 61000-4-2:1995 Electrostatic Discharge Immunity (Environment E2-Criteria B, 4k V Contact, 8k V Air Discharge)
EN 61000-4-3:1996 Radiated, Radio-Frequency, Electromagnetic Immunity (Environment E2, criteria A)
EN 61000-4-4:1995 Electrical Fast Transient/Burst Immunity (Criteria B)
EN 61000-4-5:1995 Surge Immunity (Criteria B)
EN 61000-4-6:1996 Immunity to Conducted Disturbances Induced by Radio-Frequency Fields (Criteria A)
EN 61000-4-11:1994 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

Larry Coburn

Title: Senior Vice President of Manufacturing

DECLARATION of CONFORMITY

Date of Issue: March 1, 2002

Sue Whitfield
574-294-8289
[e-mail]

Operation Manual

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

page 3

CTs Multi-Channel Power Amplifiers

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

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

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

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

2 How to Use This Manual .................................. 5

3 Setup ......................................................... 6

3.1 Unpack Your Amplifier .....................................................6

3.2 Install Your Amplifier .......................................................6

3.3 Ensure Proper Cooling ....................................................6

3.4 Choose Input Wire and Connectors .................................7

3.5 Choose Output Wire and Connectors ...............................7

3.6 Wire Your System ............................................................8

3.6.1 Dual 8/4 Mode ........................................................8

3.6.2 Dual 70V Mode .......................................................8

3.6.3 Bridge-Mono 16/8 Mode ........................................9

3.6.4 Bridge-Mono 100V Mode .......................................9

3.7 Connect to AC Mains .......................................................10

3.8 Startup Procedure ............................................................10

4 Operation .................................................... 11

4.1 Precautions ......................................................................11

4.2 Front Panel Controls and Indicators .................................12

4.3 Back Panel Controls and Connectors ...............................13

5 Advanced Features and Options .......................... 14

5.1 Protection Systems ..........................................................14

5.1.1 Thermal Level Control (TLC) ..................................14

5.1.2 Fault .......................................................................14

5.1.3 Fault Isolation Topology (FIT) ................................14

5.1.4 35-Hz High-Pass Filter ...........................................14

5.1.5 AC Under-/Over-Voltage Protection .......................14

5.1.6 Power Fuse .............................................................14

5.1.7 Inrush Limiting .......................................................14

5.1.8 Variable-speed Fans ...............................................14

5.2 Advanced Features ..........................................................14

5.2.1Switching Power Supply ..........................................14

5.2.2 Mode Switch ..........................................................14

5.2.3 Bridge Mode Indicator ............................................14

5.2.4 Channel Level Control ............................................15

5.3 Options ............................................................................16

5.3.1 Control Modules ....................................................16

5.3.2 Input Sensitivity ......................................................16

6 Troubleshooting ............................................ 17

7 Specifications .............................................. 19

8 AC Power Draw and Thermal Dissipation .............. 23

9 Service ...................................................... 25

9.1 Worldwide Service ...........................................................25

9.2 US and Canada Service ...................................................25

9.2.1 Service at a US or Canada Service Center ..............25

9.2.2 Factory Service .......................................................25

9.2.3 Factory Service Shipping Instructions: ...................25

10 Warranty ................................................... 26

Crown Factory Service Information Form ....................................29

page 4

Operation Manual

CTs Multi-Channel Power Amplifiers

CTs 4200

Dual

4 Channels Driven

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

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

Maximum Average Power

in watts with 0.1% THD.

1 kHz

20 Hz–20 kHz

260W
200W
220W

270W
220W
250W

215W
190W
220W

1 kHz 20 Hz–20 kHz1 Channel Driven

225W
210W
245W

Bridge-Mono

2 Channel-Pairs Driven

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

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

*

Constant Voltage full bandwidth power ratings support

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

CTs 8200

Dual

8 Channels Driven

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

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

1 kHz 20 Hz–20 kHz

520W
400W
220W

560W
440W
250W

Maximum Average Power

in watts with 0.1% THD.

200W
160W
200W

270W
220W
250W

1 kHz 20 Hz–20 kHz1 Channel-Pair Driven

1 kHz

1 kHz 20 Hz–20 kHz1 Channel Driven

430W
380W
220W

450W
420W
245W

20 Hz–20 kHz

175W
155W
185W

230W
220W
230W

Bridge-Mono

4 Channel-Pairs Driven

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

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

*

Constant Voltage full bandwidth power ratings support

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

1 kHz 20 Hz–20 kHz

400W
320W
200W

540W
440W
250W

350W
310W
185W

1 kHz 20 Hz–20 kHz1 Channel-Pair Driven

460W
440W
230W

*

*

*

1 Welcome

*

*

*

*

*

Building on the foundation of the Com-Tech®
Series, Crown’s CTs Series offers new flexibility
and value for installed sound applications. The
Com-Tech Series were the first to offer inde­pendent selection of high- and 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

•New Crown

®

Switching Power Supply for

reduced weight.

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

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

• FIT (Fault Isolation Topology) circuitry
isolates faults within affected channels.

• 35 Hz High-Pass Filter (70 Hz in CTs

4200) is automatically inserted when the
channel pair is set for constant-voltage
operation. (corner frequency may be
changed as a service option).

• Accepts new MC accessory modules that
tailor the amplifier to suit specific applica­tions. Modules available for remote VCA
level control and IQ System

®

Control.

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

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

• Advanced protection circuitry guards
against: shorted outputs, open circuits,
DC, mismatched loads, general overheat­ing, under-/over-voltage, high-frequency
overloads and internal faults.

®

• Proven Crown AB+B Multi-Mode

output

topology.

• Continuously-variable-speed 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, or reg­ister online at www.crownaudio.com. And save
your bill of sale—it’s your official proof of pur­chase.

Operation Manual

page 5

3 Setup

CTs Multi-Channel Power Amplifiers

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 the power switch in
the “off” position and all level controls
turned completely down (counterclock­wise).

Use a standard 19-inch (48.3-cm) equipment
rack (EIA RS-310B). See Figure 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, rear or side air vents. The side
walls of the rack should be a minimum of two
inches (5.1 cm) away from the amplifier sides,
and the back of the rack should be a minimum
of four inches (10.2 cm) from the amplifier back
panel.

Figure 3.2 illustrates standard amplifier airflow.

page 6

Thermal

Fault

Clip

Signal

Ready

Bridge34Bridge

12

Power

Data

Figure 3.1 Dimensions
Left: CTs 4200 Right: CTs 8200

Figure 3.2 Airflow

Operation Manual

CTs Multi-Channel Power Amplifiers

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.
When possible, use balanced wiring for signal input, which provides better

rejection of unwanted noise and hum. For more information, refer to the
Crown Amplifier Application Guide, available online at www.crownaudio.com

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

3.5 Choose Output Wire and
Connectors

Crown recommends using professionally constructed, high­quality, two- or four-conductor, heavy gauge speaker wire and connectors.
You may use terminal forks or bare wire for your output connectors (see Fig­ure 3.5). CTs amplifier terminal strips accept up to 10 AWG terminal forks
which fit over a #8 screw. For best results, Crown recommends Panduit part
#PV10-10LF-L or equivalent terminal fork. Screw spacing is shown in Figure

3.5.
To connect outputs, first remove the touch-proof cover plate covering the ter-

minal strip by removing the screw which holds it in place.
To prevent the possibility of short-circuits, wrap or otherwise insulate exposed

loudspeaker cable and connectors. Also, a touch-proof cover plate, which
covers the terminal strips, is provided to help prevent short circuits. The cover
plate should be reinstalled after connecting outputs.

Suggested below are guidelines to select the appropriate size of wire based on
the distance from amplifier to speaker. Check with local code as this may vary.

Distance Wire Size
up to 25 ft (7.6 m) 16 AWG

26-40 ft (7.9-12.2 m) 14 AWG
41-60 ft (12.5-18.3 m) 12 AWG
Over 60 ft (18.3 m) 10 AWG

CAUTION: Never connect the speaker return to the chassis of the
amplifier, or damage to the amplifier may result.

CAUTION: Never use shielded cable for output wiring.

Figure 3.3 Balanced Input

Connector Wiring

See the Crown Amplifier Appli­cation Guide, available online at

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

Figure 3.4 Unbalanced Input

Connector Wiring

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

Output panel

shown with
touch-proof
cover plate

removed.

Figure 3.5 Output Connector Wiring

(Typical of two channels)

Operation Manual

page 7

CTs Multi-Channel Power Amplifiers

3 Setup

3.6 Wire Your System

CAUTION: Never change the position of
the Mode Switch while the amplifier
power is on. See Section 5.2.2 for more
information.

3.6.1 Dual 8/4 Mode

Typical input and output wiring, along with level
control and Mode Switch settings are shown in
Figure 3.6. Make sure the Mode switch is set to
the “Dual 8/4” position.

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

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

lead to amplifier Channel 1 positive terminal;
repeat for negative (–). Repeat each channel wir­ing as for Channel 1. Refer to Section 3.5 for
output connector pin assignments.

3.6.2 Dual 70V Mode

CAUTION: Never change the position of
the Mode Switch while the amplifier
power is on. See Section 5.2.2 for more
information.

Typical input and output wiring, along with level
control and Mode Switch settings are shown in
Figure 3.7. Make sure the Mode switch is set to
the “Dual 70V” position.

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

output connectors.
Connect Channel 1 positive (+) speaker load to

Channel 1 positive terminal of amp; repeat for
negative (–). Repeat each channel wiring as for
Channel 1. Refer to Section 3.5 for output con­nector pin assignments.

See the Crown Amplifier Appli-
cation Guide, available online at
www.crownaudio.com, for pin
assignments for commonly

BRIDGE

DUAL DUAL

CH 2

CH 1

used connector types.

Output panel

shown with
touch-proof
cover plate

CH 4

DUAL DUAL

BRIDGE

CH 3

removed.

Figure 3.6 System Wiring and Control Settings, Dual Mode, 8/4 Ohm

70V

BRIDGE

DUAL DUAL

CH 2

70V

CH 1

Output panel

shown with
touch-proof
cover plate

removed.

CH 4

CH 3

DUAL DUAL

BRIDGE

page 8

Figure 3.7 System Wiring and Control Settings, Dual Mode, 70V.

Operation Manual

CTs Multi-Channel Power Amplifiers

3 Setup

3.6.3 Bridge-Mono 16/8 Mode

CAUTION: Never change the position of
the Mode Switch while the amplifier
power is on. See Section 5.2.2 for more
information.

Typical input and output wiring, along with level
control and Mode Switch settings are shown in
Figure 3.8. Make sure the Mode switch is set to
the “Bridge 16/8” position.

INPUTS: Connect input wiring only to the lower­(odd-) numbered channel pair.

OUTPUTS: Connect the speaker across the 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.

NOTE: When operating the channel pair in
Bridge-Mono mode, turn down (full CCW) the
level control for the higher (even)-numbered
channel of the channel pair. The lower (odd)­numbered level control works both channels.

3.6.4 Bridge-Mono 100V Mode

CAUTION: Never change the position of
the Mode Switch while the amplifier
power is on. See Section 5.2.2 for more
information.

Typical input and output wiring, along with level
control and Mode Switch settings are shown in
Figure 3.9. Make sure the Mode switch is set to
the “Bridge 100V” position.

INPUTS: Connect input wiring only to the lower­(odd-) numbered channel pair.

OUTPUTS: Connect the speaker across the 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.

NOTE: When operating the channel pair in
Bridge-Mono mode, turn down (full CCW) the
level control for the higher (even)-numbered
channel of the channel pair. The lower (odd)­numbered level control works both channels.

BRIDGE

DUAL DUAL

CH 2

CH 1

Output panel

shown with

touch-proof

cover plate

removed.

CH 4

CH 3

DUAL DUAL

BRIDGE

Figure 3.8 System Wiring and Control Settings, Bridge-Mono Mode, 16/8 Ohm.

100V

BRIDGE

DUAL DUAL

CH 2

CH 1

Output panel

shown with
touch-proof

cover plate

removed.

CH 4

DUAL DUAL

BRIDGE

CH 3

Figure 3.9 System Wiring and Control Settings, Bridge-Mono Mode, 100V

See the Crown Amplifier Appli­cation Guide, available online at

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

Operation Manual

page 9

3 Setup

CTs Multi-Channel Power Amplifiers

3.7 Connect to AC Mains

Connect your amplifier to the AC mains power
source (power outlet) with the supplied AC power
cordset. First, connect the IEC end of the cordset to
the IEC connector on the amplifier; then, plug the
other end of the cordset to the AC mains.

WARNING: The third prong of this connector
(ground) is an important safety feature. Do
not attempt to disable this ground connec­tion by using an adapter or other methods.

Amplifiers don’t create energy. The AC mains volt­age and current must be sufficient to deliver the
power you expect. If the AC line voltage varies out
of an acceptable range, the amplifier’s power supply
turns off and the blue Power LED flashes. The
amplifier will turn back on when the AC line voltage
returns to safe operating levels. Figure 3.10 pro­vides voltage limits for all amplifier AC voltage con­figurations. Also, the amplifier must be run within
the specified mains frequency requirements (indi­cated on the amplifier’s back panel label). If you are
unsure of the output voltage of your AC mains,
please consult your electrician.

Models

100-120 VAC

units

Under-Voltage

Limit

90VAC 132VAC

Over-Voltage

Limit

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.

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.

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 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.

page 10

220V/230V/

240V units

Figure 3.10 AC Under-Voltage and Over-Voltage

Limits for Various Amplifier Models

198VAC 264VAC

Operation Manual

CTs Multi-Channel Power Amplifiers

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. WARNING: 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, and
may also void the product’s warranty.

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. Use caution when operating the amplifier
with a 2-ohm load impedance on 1 channel.
Do not operate the amplifier with less than a
2-ohm load impedance per channel when
driving more than 1 channel. Due to the
amplifier’s output protection, such a config­uration may result in premature clipping,
speaker damage or a blown power fuse.

Remember: Crown is not liable for damage that
results from overdriving other system compo­nents.

Operation Manual

page 11

4 Operation

CTs Multi-Channel Power Amplifiers

4.2 Front Panel Controls
and Indicators

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

A. Bridge Mode Indicator

Yellow LED, one per channel pair, illumi­nates when the channel pair's Mode
Switch is set to the “Bridge” position. If
Mode switch is changed while amplifier is
powered up, Bridge LED will flash, indicat­ing that the amplifier must be powered off
and on to reset the Mode. See Section 6.9.

B. Ready Indicator

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

C. Signal Indicator

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

D. Clip Indicator

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

E. Thermal Indicator

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

F. Fault Indicator

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

G. Ventilation Grille

Front-to-rear forced airflow.

H. Data Indicator

Yellow LED indicates IQ Loop data activity
(if the amplifier is equipped with an IQ-MC
module, and connected to an IQ Loop).

I. Power Indicator

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

J. Power Switch

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

page 12

Figure 4.1 CTs 8200 front panel.

Operation Manual

CTs Multi-Channel Power Amplifiers

4 Operation

4.3 Back Panel Controls
and Connectors

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

K. AC Power Cord Connector

Standard IEC type 320 inlet.
120V models: 15-amp.
220-240V models: 10-amp.
Voltage is indicated above IEC inlet.

L. Output Connectors

One four-pole terminal strip for every two chan­nels with touch-proof cover. Accepts up to 10
AWG terminal forks. To connect outputs, first
remove the touch-proof cover plate covering
the terminal strip by removing the screw which
holds it in place.

M. Accessory Panel

CTs 4200: Accepts an optional IQ-MC4A or
VCA-MC4A module.

CTs 8200: Accepts an optional IQ-MC8 or
VCA-MC8 module (explained in Section 5.3.1,
Control Modules).

N. Channel Level Controls

One 21-position detented rotary potentiometer
per channel, ranging from infinity (-70 dB) to
0 dB attenuation. Refer to Section 5.2.4 for pre­cise dB attenuation increments for each detent.

O. Input Connectors

Removable Phoenix-style barrier connectors
for balanced input.

P. Mode Switch

Used on each consecutive pair of channels, this
four-position switch is used to select the ampli­fier’s mode of operation: Dual 8/4 ohms,
Dual 70V, Bridge-Mono 16/8 ohms, and
Bridge-Mono 100V.

IMPORTANT: Be sure to power off the
amplifier before change the Mode­switch setting. If this is not done, the Bridge

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

Q. Cooling Vents

Front-to-rear forced airflow.

Operation Manual

Figure 4.2 CTs 8200 back panel (shown with touch-proof cover removed).

page 13

5 Advanced Features
and Options

NOTE: For more information about these Crown
amplifier features, please visit 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, automatic high-pass filtering, DC pro­tect, AC under-/over-voltage protection, inrush limiting,
and variable-speed fans.

5.1.1 Thermal Level Control (TLC)

If an amplifier channel starts to overheat, the TLC circuit
will engage that channel’s 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. If the channel becomes too hot for safe
operation even after full TLC limiting, the channel will
shut off, and the Thermal Indicator for that channel will
flash brightly to alert the user that a state of thermal
stress or overload has cause the channel to shut down.

5.1.2 Fault

If an amplifier channel requires service, the correspond­ing Fault indicator will illuminate to alert the user of this
condition. If this occurs, return the amplifier to the Crown
factory or to an authorized Crown service center.

5.1.3 Fault Isolation Topology (FIT)

Crown’s new FIT (Fault Isolation Topology) design iso­lates channel-specific faults, and prevents them from
affecting remaining channels. If a CTs multi-channel amp
is powering multiple zones, and a channel fails, the other
zones continue to operate. FIT makes the CTs 4200 and
CTs 8200 the most trustworthy multi-channel amplifiers
in the business!

5.1.4 35-Hz High-Pass Filter

A fixed 35-Hz (70-Hz in CTs 4200) high-pass filter per
channel pair is automatically inserted when the mode
switch is set to either of the constant-voltage settings.
The high-pass filter corner frequency can be set to 70 Hz,
or bypassed, with a service option.

5.1.5 AC Under-/Over-Voltage
Protection

If the AC line voltage varies out of an acceptable range,
the amplifier’s power supply turns off and the blue Power
LED flashes. The amplifier will turn back on when the AC
line voltage returns to safe operating levels. Figure 5.1
provides voltage limits for all amplifier AC voltage con­figurations. Also, the amplifier must be run within the
specified mains frequency requirements (indicated on the
amplifier’s back panel label). If you are unsure of the out­put voltage of your AC mains, consult your electrician.

Models

100-120 VAC

units

220V/230V/

240V units

Figure 5.1 AC Under-Voltage and

Over-Voltage Limits for Various Amplifier Models

5.1.6 Power Fuse

A fuse protects the amplifier from excessive AC current
draw.

5.1.7 Inrush Limiting

A soft-start circuit in the power supply minimizes the
amplifier’s current draw during power-on.

5.1.8 Variable-speed Fans

Continuously variable speed fans direct the airflow
through the amplifier for cooling.

Under-Voltage

Limit

90VAC 132VAC

198VAC 264VAC

Over-Voltage

Limit

CTs Multi-Channel Power Amplifiers

5.2 Advanced Features

5.2.1 Switching Power Supply

Crown’s new 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 absorb the substantial waste that occurs when
operating 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/60Hz, 220V/50Hz, 230V/50Hz,
240V/50Hz, and 100V/50Hz AC mains.

5.2.2 Mode Switch

Each consecutive pair of channels has one four-position
switch that selects the amplifier’s mode of operation. The
switch positions are:

• Dual mode for 4 or 8 ohm operation.

• Dual mode for 70V constant-voltage opera­tion.

• Bridge-Mono mode for 8 or 16 ohm opera­tion.

• Bridge-Mono mode for 100V constant-voltage
operation.

Be sure to turn off the amplifier before changing
the Mode-switch setting.

5.2.3 Bridge Mode Indicator

This yellow LED indicates when the amplifier’s mode
switch is set to the Bridge position. Each consecutive pair
of channels has one Bridge LED.

page 14

Operation Manual

CTs Multi-Channel Power Amplifiers

5 Advanced Features
and Options

5.2.4 Channel Level Control

The signal level for each input can be attenu­ated accurately by adjusting the 21-step Level
Control (see Section 4.2). Figure 5.2 shows the
amount of attenuation in dB for each detent.

Note: Attenuation per detent varies with operat­ing mode since gain varies with operating
mode. Attenuation amounts shown may vary
±6%.

ATTENUATION in dB

Detent 4/8 Ohm 70V 100V

0 (full CCW) -68.31 -72.90 -71.02

1 -67.54 -72.06 -70.26

2 -32.23 -36.61 -34.90

3 -25.46 -29.74 -28.00

4 -21.83 -25.87 -24.22

5 -19.23 -23.20 -21.58

6 -17.12 -20.94 -19.40

7 -15.36 -19.02 -17.53

8 -13.76 -17.22 -15.79

9 -12.28 -15.53 -14.20

10 -10.84 -13.90 -12.62

11 -9.51 -12.32 -11.16

12 -8.28 -10.87 -9.81

13 -7.09 -9.45 -8.45

14 -6.30 -8.11 -7.22

15 -4.92 -6.70 -5.94

16 -3.82 -5.26 -4.63

17 -2.62 -3.70 -3.21

18 -1.35 -1.90 -1.66

19 -0.01 -0.01 -0.01

20 (full CW) 0.00 0.00 0.00

Operation Manual

Figure 5.2 Level-control Attenuation per Detent

page 15

5 Advanced Features
and Options

5.3 Options

Below are some available options. For current
options, visit the Crown website at www.crownau­dio.com.

5.3.1 Control Modules

IQ-MC (IQ Module): See Figure 5.3. A single IQ­MC module provides IQ control and monitoring
capability to all channels of the amplifier. Features
include basic IQ amplifier control and monitoring,
including attenuation, mute, polarity, input level,
output level, power supply temperature, and thermal
level meters. Advanced features include IOC, Ther­mal and Fault error reporting, Load Supervision,
output limiting, Listen Bus, AUX control port,10
presets, and real-time “read-only” software indica­tion of amplifier hardware indicator, level control,
and mode switch status.

VCA-MC (VCA module): See Figure 5.4. Pro­vides independent remote level control for each
channel. 4-pin removable Phoenix-style barrier
connectors provide the +10VDC control voltage,
ground, and control lines for two amplifier chan­nels. Thus, 4-channel amplifiers use two connec­tors; 8-channel amplifiers use four connectors.

Wall-Mount level control panels for use with
VCA module:

1-VCAP: See Figure 5.5. Used in conjunction with

a VCA-MC module, this is a single-gang panel pro­viding remote volume control for one or more CTs
amplifier channels. The potentiometer on the panel
is wired directly to one of the VCA connectors on
the VCA-MC.

4-VCAP: See Figure 5.6 This is a two-gang panel
providing remote volume control for four or more
CTs amplifier channels. The potentiometers on the
panel are wired directly to the respective VCA con­nector on the VCA-MC.

Refer to the VCA-MC Operation Manual for wiring
of the single or multiple channel level control.

Your amplifier may have come with an IQ-MC or
VCA-MC module already factory-installed, or your
choice of MC modules can be easily added to the
amplifier by any authorized Crown Service Center.
Contact Crown Technical Support for more details.

Choosing the Right Module

To order accessory modules for your amplifier,
please refer to the model tag (located on the back
panel of the amplifier) for your amplifier’s specific
model number. Then refer to the chart below to
select the correct accessory for your requirements.

MC MODULE VCA MODULE

CTs 4200 IQ-MC4 VCA-MC4

CTs 4200A IQ-MC4A VCA-MC4A

CTs 8200 IQ-MC8 VCA-MC8

1-VCAP: Single-gang wall-mount panel with
one VCA channel volume control (for any CTs
model)

4-VCAP: Two-gang wall-mount panel with
four VCA channel volume controls (for any CTs
model)

5.3.2 Input Sensitivity

The CTs 4200 and CTs 8200 have a fixed input sen­sitivity of 1.4V. A service option is available for
other input sensitivities.

CTs Multi-Channel Power Amplifiers

Figure 5.5 1-VCAP Module

page 16

Figure 5.6 4-VCAP Module

Figure 5.3 IQ-MC8 Module

Figure 5.4 VCA-MC8 Module

Operation Manual

CTs Multi-Channel Power Amplifiers

6 Troubleshooting

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 fuse has blown. Verify
that input levels and output impedances
are within safe ranges. Refer the unit to
an authorized Crown service center for
fuse replacement.

CONDITION: Power indicator is
flashing.

POSSIBLE REASON:

• The AC line voltage has dropped below
10% or has risen above 10% of the
nominal line voltage of the power supply.

Refer to section 5.1.6 for specific voltage
requirements.

CONDITION: Fault indicator is on.

POSSIBLE REASON:

• The amplifier channel has stopped oper­ating. Return the unit to an authorized
Crown Service Center.

CONDITION: Distorted sound.

POSSIBLE REASON:

• Load is wired incorrectly or Dual/Bridge
mode switch is set incorrectly. Check
both.

• Input is overloaded 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.

• Thermal Level Control (TLC) is active.

Note: If the signal sounds distorted even
though the Clip LED is off, the input signal is
distorted. Check gain staging and output lev­els of the mixer or preamp.

Operation Manual

page 17

6 Troubleshooting

CTs Multi-Channel Power Amplifiers

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.

• 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.

• DC or excessive low-frequency signal at
the amplifier’s output has enabled
speaker protection.

CONDITION: Thermal indicator is
flashing.

POSSIBLE REASON:

• The amplifier has become too hot for
safe operation. Check for loads less than
2 ohms, and for excessive input levels.
Check for proper ventilation and proper
mode-switch setting. Driving low­impedance loads while in high-voltage
mode can cause overheating.

CONDITION: All channel thermal
indicators are flashing.

POSSIBLE REASON:

• Power supply thermal overload.

CONDITION: No input signal.

(Signal indicator is not flashing even though
audio is applied and channel is ready).

POSSIBLE REASON:

• Input signal level is very low.

• Input cables have become disconnected.

page 18

CONDITION: Bridge LED is flashing.

POSSIBLE REASON:

• The mode switch was switched while the
power was on.

Operation Manual

CTs Multi-Channel Power Amplifiers

(

7 Specifications

Figure 7.1

CTs 4200

Power Chart

CTs 4200: MINIMUM GUARANTEED POWER

(in watts, 0.1% THD) 120VAC, 60 Hz units

Dual Mode

Channels Driven

1 kHz 20 Hz - 20 kHz 1 kHz 1 kHz 20 Hz - 20 kHz

4 Ohm 260 215 270 270 225
8 Ohm 200 190 210 220 210

25 Ohm) at 0.1% THD

70V

220 220* 240 250 245*

Bridge-Mono Mode

Channel Pairs Driven

8 Ohm
16 Ohm
100V (50 Ohm)

* Constant Voltage full bandwidth power ratings support 100 Hz - 20 kHz due to automatic high-pass filters.

at 0.1% THD

CTs 8200: MINIMUM GUARANTEED POWER

Dual Mode

Channels Driven

1 kHz 1 kHz 1 kHz

8

4

20 Hz - 20 kHz

2

1

21

1 kHz 20 Hz - 20 kHz 1 kHz 20 Hz - 20 kHz

520 430 560 450
400 380 440 420
220 220* 250 245*

(In watts, 0.1% THD) 120VAC, 60 Hz units

4

2

1 kHz

1

20 Hz - 20 kHz

Operation Manual

Figure 7.2

CTs 8200

Power Chart

4 Ohm
8 Ohm

70V (25 Ohm) at 0.1% THD

200
160
200

175
155
185*

250
190
220

260
200
240

270
220
250

Bridge-Mono Mode

Channel Pairs Driven

1 kHz

8 Ohm
16 Ohm
100V (50 Ohm) at 0.1% THD

* Constant Voltage full bandwidth power ratings support 100 Hz - 20 kHz due to automatic high-pass filters.

400

320
200

42

20 Hz - 20 kHz

350
310
185*

1 kHz

500
380

220

1 kHz 20 Hz - 20 kHz

540
440

250

1

230
220
230*

460
440

230*

page 19

CTs Multi-Channel Power Amplifiers

7 Specifications

Performance CTs 4200 CTs 8200

Frequency Response (at 1 watt, 20 Hz - 20 kHz) ± 0.5 dB ± 0.5 dB
Phase Response (at 1 watt, 10 Hz - 20 kHz) ± 35° ± 35°
Signal to Noise Ratio below rated power (20 Hz to 20 kHz) 100 dB unweighted 100 dB unweighted
Total Harmonic Distortion (THD) at 1 watt, from 20 Hz to 20 kHz < 0.05% < 0.05%
Intermodulation Distortion (IMD) 60 Hz and 7 kHz at 4:1,

from 163 milliwatts to full bandwidth power, typical
Damping Factor: 10 Hz to 400 Hz >180 >180
Crosstalk (below rated power, 20 Hz to 1 kHz) > 80 dB > 80 dB
Common Mode Rejection (CMR) (20 Hz to 1 kHz) > 50 dB > 50 dB
DC Output Offset (Shorted input) < ± 5 mV < ± 5 mV
Input Impedance nominally balanced, nominally unbalanced 20 kilohms, 10 kilohms 20 kilohms, 10 kilohms
Maximum Input Level (before input compression) + 20 dBu + 20 dBu
Load Impedance (Note: Safe with all types of loads)

Stereo
Bridge Mono

Voltage Gain (at maximum level setting), 1.4V sensitivity
4/8 Ohm Operation
70V Operation
100V Operation

Required AC Mains (model dependent) 120V, 60 Hz and 220/230/240V, 50 Hz 120V, 60 Hz and 220/230/240V, 50 Hz
Power Draw at Idle (120VAC mains, all channels in 4/8 ohm mode) 70W 70W
Power Draw at Idle (120VAC mains, all channels in 70V mode) 114W 114W
Cooling Continuously variable speed forced air, front-to-back airflow Continuously variable speed forced air, front-to-back airflow
Dimensions: Width, Height, Depth 19 in. (48.3 cm) W x 3.5 in. (8.9 cm) H x 16.25 in. (41.3 cm) D 19 in. (48.3 cm) W x 5.25 in. (13.3 cm) H x 16.25 in. (41.3 cm) D
Net Weight, Shipping Weight 2 6 lb . 6 oz . ( 1 2 k g ) , 3 0 l b . 1 4 o z . (1 4 k g ) 3 6 l b . 6 o z . ( 1 6 . 5 k g) , 4 7 l b. ( 2 1 . 3 kg )

The following specifications apply to all models in Dual 8/4 ohm mode with 8-ohm loads unless otherwise specified.

< 0.05% < 0.05%

4/8 and 25 ohms (70V)

8/16 and 50 ohms (100V)

20:1 (26 dB)
50:1 (34 dB)

71.4:1 (37 dB)

4/8 and 25 ohms (70V)

8/16 and 50 ohms(100V)

20:1 (26 dB)
50:1 (34 dB)

71.4:1 (37 dB)

page 20

Operation Manual

CTs Multi-Channel Power Amplifiers

7 Specifications

Operation Manual

Figure 7.3 CTs 8200 Typical Frequency Response (1 W)

Figure 7.5 CTs 8200 Typical Damping Factor vs. Frequency

Figure 7.4 CTs8200 Typical Phase Response (1 W)

page 21

7 Specifications

CTs Multi-Channel Power Amplifiers

Figure 7.6 CTs 8200 Typical Output Impedance vs. Frequency

page 22

Figure 7.7 CTs 8200 Typical Crosstalk vs. Frequency

Operation Manual

CTs Multi-Channel 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.

CTs 4200

Load

At Idle (8.4 Ohm mode )
At Idle (70/100V mode)

1/8th Power Pink Noise 8 Ohms/Ch.

Typical of program material 16 Ohms Bridge
just at clip. 4 Ohms/Ch.

8 Ohms Bridge
70V/Ch. 220x4
100V Bridge 220x2

1/3rd Power Pink Noise 8 Ohms/Ch.

Typical of program material 16 Ohms Bridge
with severe clipping. 4 Ohms/Ch.

8 Ohms Bridge
70V/Ch. 220x4
100V Bridge 220x2

Rated

Power

200x4
400x2
260x4
520x2

200x4
400x2
260x4
520x2

Line Current

120VAC

5.2 2.6 400 99

7.8 3.9 639 134 505 1722 434

7.6 3.8 648 257

11.8 5.9 1005 349 655 2236 564

Line Current

230VAC

Watts

watts in

70 0 70 239 60

114 0 114 389 98

watts out dissapated

301 1027 259

318 1084 2735.3 2.7 427 110

391 1336 337

382 1303 3297.9 4.0 668 286

Thermal Dissipation

Btu/hr kcal/hr

Operation Manual

page 23

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.

CTs Multi-Channel Power Amplifiers

CTs 8200

Load

At Idle (8.4 Ohm mode )
At Idle (70/100V mode)

1/8th Power Pink Noise 8 Ohms/Ch.

Typical of program material 16 Ohms Bridge
just at clip. 4 Ohms/Ch.

8 Ohms Bridge
70V/Ch. 200x8
100V Bridge 200x4

1/3rd Power Pink Noise 8 Ohms/Ch.

Typical of program material 16 Ohms Bridge
with severe clipping. 4 Ohms/Ch.

8 Ohms Bridge
70V/Ch. 200x8
100V Bridge 200x4

Rated

Power

160x8
320x4
200x8
400x4

160x8
320x4
200x8
400x4

Line Current

120VAC

8.7 4.3 725 172 553 1889 476

13.3 6.7 1155 218 938 3200 807

10.1 5.1 857 203 653 2230 562

13.1 6.5 1136 437 699 2385 601

19.3 9.7 1748 557 1190 4062 1024

15.3 7.7 1344 552 792 2702 681

Line Current

230VAC

Watts

watts in

70 0 70 239 60

114 0 114 389 98

watts out dissapated

Thermal Dissipation

Btu/hr kcal/hr

page 24

Operation Manual

CTs Multi-Channel Power Amplifiers

9 Service

Crown amplifiers are quality units that rarely require
servicing. Before returning your unit for servicing,
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.

9.1 Worldwide 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 and Canada 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 or Canada 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
the Crown website at www.crownaudio.com, or by
calling Crown Customer Service.

9.2.2 Factory Service

To obtain factory service, fill out the service infor­mation page found in the back of this manual and
send it along with your proof of purchase and the
defective unit to the Crown factory.

You may create your service RA online. Go to
www.crownaudio.com. At the top of the page, click
on Service, then click on “Click here to request an
RA number.” Fill in and submit the request, then
print the confirmation page.

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. Before sending a Crown product to the factory
for service, first call the Crown Service Depart­ment for a return authorization (RA) number.

2. Be sure to fill out the service information form
that follows and enclose it with your shipment,
either inside the box or in a packing slip enve­lope securely attached to the outside of the
shipping carton. Do not send the service infor­mation form separately. If you are sending the
unit from a Shipping Center, we recommend
taping the form to the product. We also recom­mend recording the serial number and model
before shipping for your reference.

3. To ensure the safe transportation of your unit to
the factory, ship it in an original factory packing
container. If you don’t have the original carton,

you may obtain a product service foam-in­place shipping pack from the Crown Factory
Service Department at the number listed below.
For non-warranty service, you may also pro­vide your own shipping pack, however we still
recommend using a Crown Supplied Shipping
Container. Minimum recommended require­ments for materials are as follows: 275 P.S.I.
burst test Double-Wall carton that allows for 2­inch solid Styrofoam on all six sides of unit or
3 inches of plastic bubble wrap on all six sides
of unit; securely seal the package with an ade­quate carton sealing tape. Do not use light
boxes or “peanuts.” Damage caused by poor
packing cannot be covered under warranty.

4. Do not ship the unit in any kind of cabinet
(wood or metal). Ignoring this warning may
result in extensive damage to the unit and the
cabinet. Accessories are not needed—do not
send the product documentation, cables and
other hardware.

If you have any questions, please contact Crown
Factory Service.

Crown Factory Service

1718 W. Mishawaka Rd.,

Elkhart, Indiana 46517 U.S.A.

Telephone: [phone]

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

Operation Manual

page 25

YEAR

3

10 Warranty

CTs Multi-Channel Power Amplifiers

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 three (3) 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.

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 inter-

est, 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. 12/01

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Operation Manual

CTs Multi-Channel Power Amplifiers

YEAR

3

10 Warranty

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 Crown1 product,
for a period of three (3) 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, and we
further warrant the new Crown product regardless
of the reason for failure, except as excluded in this
Warranty.

1 Note: If your unit bears the name “Amcron,” please substitute it

for the name “Crown” in this warranty.

ITEMS EXCLUDED FROM THIS CROWN­WARRANTY

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

WORLDWIDE EXCEPT USA & CANADA

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. We will remedy the defect
and ship the product from the service center
within a reasonable time after receipt of the defec­tive product at our authorized service center.

HOW TO OBTAIN WARRANTY SERVICE

You must notify your local Crown importer of
your need for warranty service within the warranty
period. All components must be shipped in the
original box. Corrective action will be taken within
a reasonable time of the date of receipt of the
defective product by our authorized service center.
If the repairs made by our authorized service cen­ter are not satisfactory, notify 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.

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

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. 7/01

Operation Manual

page 27

NOTES

CTs Multi-Channel Power Amplifiers

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Operation Manual

CTs Multi-Channel Power Amplifiers

Crown Factory Service Information

Shipping Address: Crown Factory Service, 1718 W. Mishawaka Rd., Elkhart, IN 46517

Phone: [phone] or 1-574-294-8200 Fax: [phone]

Owner’s Name: ________________________________________________________________________________________________________________________________________________________________

Shipping Address: ______________________________________________________________________________________________________________________________________________________________

Phone Number: ________________________________Fax Number: _____________________________________Email____________________________________________________________________________

Model: __________________________________________________________________________________ Serial Number: ________________________________________________________________________

Purchase Date: _ _______________________________________________________________________________________________________________________________________________________________

NATURE OF PROBLEM

(Be sure to describe the conditions that existed when the problem occurred and what attempts were made to correct it.)

_____________________________________________________________________________________________________________________________________________________________________________

_____________________________________________________________________________________________________________________________________________________________________________

_____________________________________________________________________________________________________________________________________________________________________________

_____________________________________________________________________________________________________________________________________________________________________________

_____________________________________________________________________________________________________________________________________________________________________________

_____________________________________________________________________________________________________________________________________________________________________________

_____________________________________________________________________________________________________________________________________________________________________________

_____________________________________________________________________________________________________________________________________________________________________________

Other equipment in system:__________________________________________________________________________________________________________________________________________________________

_____________________________________________________________________________________________________________________________________________________________________________

_____________________________________________________________________________________________________________________________________________________________________________

_____________________________________________________________________________________________________________________________________________________________________________

If warranty has expired, payment will be: ! Cash/Check ! Visa ! Master Card ! C.O.D. ! Purchase Order for Crown Dealer

Card Number:___________________________________ Exp. Date:___________________

Signature:______________________________________________________________________

ENCLOSE THIS PORTION WITH THE UNIT. DO NOT MAIL SEPARATELY.

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