CTs Multi-Channel Series
CTs 4200
Operation Manual
CTs 8200
Obtaining Other Language Versions: To obtain information in another language about the use of this product, please contact your
local Crown Distributor. If you need assistance locating your local distributor, please contact Crown at 574-294-8000.
This manual does not include all of the details of design, production, or variations of the equipment. Nor does it cover every possible
situation which may arise during installation, operation or maintenance.
The information provided in this manual was deemed accurate as of the publication date. However, updates to this information may have
occurred. To obtain the latest version of this manual, please visit the Crown website at www.crownaudio.com.
Trademark Notice: Crown, Crown Audio, Amcron, Com-Tech, IQ System, and Multi-Mode are registered trademarks of Crown 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: 574-294-8000
134434-7A
3/05
CTs Multi-Channel Power Amplifiers
Important Safety
Instructions
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
11)
12)
13)
14)
page 2
Read these instructions.
Keep these instructions.
Heed all warnings.
Follow all instructions.
Do not use this apparatus near water.
Clean only with a dry cloth.
Do not block any ventilation openings. Install
in accordance with the manufacturer’s instructions.
Do not install near any heat sources such as
radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce
heat.
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.
Protect the power cord from being walked on
or pinched, particularly at plugs, convenience
receptacles, and the point where they exit from
the apparatus.
Only use attachments/accessories specified
by the manufacturer.
Use only with a cart, stand, tripod, bracket, or
table specified by the manufacturer, or sold
with the apparatus. When a cart is used, use
caution when moving the cart/apparatus combination to avoid injury from tip-over.
Unplug this apparatus during lightning storms
or when unused for long periods of time.
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) WARNING: 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, SUCH AS VASES,ON THIS APPARATUS.
TO PREVENT ELECTRIC SHOCK DO NOT REMOVE
TOP OR BOTTOM COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
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.
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.
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.
Operation Manual
CTs Multi-Channel Power Amplifiers
DECLARATION of CONFORMITY
Crown International, Inc.
ISSUED BY: Crown International, Inc.
1718 W. Mishawaka Road
Elkhart, Indiana 46517 U.S.A.
FOR COMPLIANCE QUESTIONS ONLY:
Sue Whitfield
574-294-8289
swhitfield@crownintl.com
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 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
Date of Issue: March 1, 2002
Title: Senior Vice President of Manufacturing
Operation Manual
Due to line current harmonics, we recommend that you contact your supply authority before connection.
page 3
CTs Multi-Channel Power Amplifiers
page 4
Important Safety Instructions .......................................................2
5.1.4 35-Hz High-Pass Filter ...........................................14
Declaration of Conformity ............................................................3
5.1.5 AC Under-/Over-Voltage Protection .......................14
1 Welcome ..................................................... 5
5.1.6 Power Fuse .............................................................14
1.1 Features ...........................................................................5
5.1.7 Inrush Limiting .......................................................14
2 How to Use This Manual .................................. 5
5.1.8 Variable-speed Fans ...............................................14
3 Setup ......................................................... 6
5.2 Advanced Features ..........................................................14
3.1 Unpack Your Amplifier .....................................................6
5.2.1Switching Power Supply ..........................................14
3.2 Install Your Amplifier .......................................................6
5.2.2 Mode Switch ..........................................................14
3.3 Ensure Proper Cooling ....................................................6
5.2.3 Bridge Mode Indicator ............................................ 14
3.4 Choose Input Wire and Connectors .................................7
5.2.4 Channel Level Control ............................................ 15
3.5 Choose Output Wire and Connectors ...............................7
5.3 Options ............................................................................16
3.6 Wire Your System ............................................................8
5.3.1 Control Modules ....................................................16
3.6.1 Dual 8/4 Mode ........................................................8
5.3.2 Input Sensitivity ......................................................16
3.6.2 Dual 70V Mode .......................................................8
6 Troubleshooting ............................................ 17
3.6.3 Bridge-Mono 16/8 Mode ........................................9
7 Specifications .............................................. 19
3.6.4 Bridge-Mono 100V Mode .......................................9
8 AC Power Draw and Thermal Dissipation .............. 23
3.7 Connect to AC Mains .......................................................10
9 Service ...................................................... 25
3.8 Startup Procedure ............................................................10
9.1. International and Canada Service ...................................25
4 Operation .................................................... 11
9.2 US Service .......................................................................25
4.1 Precautions ......................................................................11
9.2.1 Service at a US Service Center ...............................25
4.2 Front Panel Controls and Indicators .................................12
9.2.2 Factory Service .......................................................25
4.3 Back Panel Controls and Connectors ...............................13
9.2.3 Factory Service Shipping Instructions .....................25
5 Advanced Features and Options.......................... 14
9.2.4 Packing Instructions................................................25
5.1 Protection Systems ..........................................................14
9.2.5 Estimate Approval....................................................25
5.1.1 Thermal Level Control (TLC) ..................................14
9.2.6 Payment of Non-Warranty Repairs...........................25
5.1.2 Fault .......................................................................14
10 Warranty ................................................... 26
5.1.3 Fault Isolation Topology (FIT) .................................14
Crown Factory Service Information Form ....................................29
Operation Manual
CTs Multi-Channel Power Amplifiers
CTs 4200
Dual
Maximum Average Power
in watts with 0.1% THD.
4 Channels Driven
4-ohm (per ch.)
8-ohm (per ch.)
70V (per ch.)
1 kHz
20 Hz–20 kHz
260W
180W
220W
215W
190W
220W*
1 Channel Driven
4-ohm (per ch.)
8-ohm (per ch.)
70V (per ch.)
1 kHz
20 Hz–20 kHz
270W
220W
250W
225W
210W
245W*
Bridge-Mono
2 Channel-Pairs Driven
8-ohm (per ch. pair)
16-ohm (per ch. pair)
100V (per ch. pair)
1 kHz
20 Hz–20 kHz
520W
400W
220W
430W
380W
220W*
1 kHz
20 Hz–20 kHz
560W
440W
250W
450W
420W
245W*
1 Channel-Pair Driven
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
Maximum Average Power
in watts with 0.1% THD.
8 Channels Driven
4-ohm (per ch.)
8-ohm (per ch.)
70V (per ch.)
1 kHz
20 Hz–20 kHz
200W
160W
200W
175W
155W
185W*
1 kHz
20 Hz–20 kHz
270W
220W
250W
230W
220W
230W*
1 Channel Driven
4-ohm (per ch.)
8-ohm (per ch.)
70V (per ch.)
Bridge-Mono
4 Channel-Pairs Driven
8-ohm (per ch. pair)
16-ohm (per ch. pair)
100V (per ch. pair)
1 kHz
20 Hz–20 kHz
400W
320W
200W
350W
310W
185W*
1 kHz
20 Hz–20 kHz
540W
440W
250W
460W
440W
230W*
1 Channel-Pair Driven
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.
Operation Manual
1 Welcome
Building on the foundation of the Com-Tech®
Series, Crown’s CTs Series offers new flexibility
and value for installed sound applications. The
Com-Tech Series were the first to offer independent selection of high- and 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.
•
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.
•
In addition, CTs Series amplifiers include a
number of features which require some explanation before they can be used to their maximum advantage.
Comprehensive array of indicators including Power and Data, along with Bridge,
Ready, Signal, Clip, Thermal and Fault for
each channel, provide accurate diagnostics.
•
Please take the time to study this manual so
that you can obtain the best possible service
from your amplifier.
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.
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.
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.
•
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.
page 5
CTs Multi-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
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.
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.
NOTE: When transporting, amplifiers should be
supported at both front and back.
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.
Fault
Thermal
Clip
Power
Signal
Ready
Data
1
Bridge
2
3
Bridge
4
Figure 3.2 Airflow
Figure 3.1 Dimensions
Left: CTs 4200
Right: CTs 8200
page 6
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.
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.
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.
Figure 3.4 Unbalanced Input
Connector Wiring
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.
NOTE: CTs 8200 is shown. Some CTs 4200 features are in different locations.
Output panel
shown with
touch-proof
cover plate
removed.
To connect outputs, first remove the touch-proof cover plate covering the terminal 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)
26-40 ft (7.9-12.2 m)
41-60 ft (12.5-18.3 m)
Over 60 ft (18.3 m)
16 AWG
14 AWG
12 AWG
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.
Operation Manual
Figure 3.5 Output Connector Wiring
(Typical of two channels)
page 7
CTs Multi-Channel Power Amplifiers
3 Setup
See the Crown Amplifier Application Guide, available online at
www.crownaudio.com, for pin
assignments for commonly
used connector types.
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.
BRIDGE
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.
DUAL
DUAL
CH 2
CH 1
CH 4
CH 3
DUAL
DUAL
Output panel
shown with
touch-proof
cover plate
removed.
BRIDGE
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.
Figure 3.6 System Wiring and Control Settings, Dual Mode, 8/4 Ohm
70V
BRIDGE
70V
DUAL
DUAL
CH 2
CH 1
Output panel
shown with
touch-proof
cover plate
removed.
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.
CH 4
CH 3
DUAL
DUAL
BRIDGE
Figure 3.7 System Wiring and Control Settings, Dual Mode, 70V.
page 8
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.
BRIDGE
DUAL
DUAL
CH 2
CH 1
CH 4
CH 3
DUAL
DUAL
See the Crown Amplifier Application Guide, available online at
www.crownaudio.com, for pin
assignments for commonly
used connector types.
Output panel
shown with
touch-proof
cover plate
removed.
INPUTS: Connect input wiring only to the lower(odd-) numbered channel pair.
BRIDGE
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.
Figure 3.8 System Wiring and Control Settings, Bridge-Mono Mode, 16/8 Ohm.
100V
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.
Operation Manual
BRIDGE
Output panel
shown with
touch-proof
cover plate
removed.
DUAL
DUAL
CH 2
CH 1
CH 4
CH 3
DUAL
DUAL
BRIDGE
Figure 3.9 System Wiring and Control Settings, Bridge-Mono Mode, 100V
page 9
CTs Multi-Channel Power Amplifiers
3 Setup
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.
3.8 Startup Procedure
Use the following procedure when first turning on
your amplifier:
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.
3. Turn on the “Power” switch. The Power indicator should glow.
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
Under-Voltage
Limit
Over-Voltage
Limit
100VAC
(CTs 8200
only)
90VAC
110VAC
120 VAC units
108VAC
132VAC
220V/230V/
240V units
198VAC
264VAC
1. Turn down the level of your audio source.
2. Turn down the level controls of the amplifier.
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.
Figure 3.10 AC Under-Voltage and Over-Voltage
Limits for Various Amplifier Models
page 10
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
CTs Multi-Channel Power Amplifiers
4 Operation
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.
F. Fault Indicator
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.
G. Ventilation Grille
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.
I.
Red LED, one per channel, illuminates
when the amplifier output channel has
stopped operating.
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).
Power Indicator
Blue LED indicates amplifier has been
turned on and AC power is available. Indicator also flashes if the amplifier shuts off
due to an under/over-voltage condition on
the AC mains.
J. Power Switch
Amplifier is on when the switch is in the IN
position.
Figure 4.1 CTs 8200 front panel.
page 12
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.
Figure 4.2 CTs 8200 back panel (shown with touch-proof cover removed).
Operation Manual
page 13
CTs Multi-Channel Power Amplifiers
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
Under-Voltage
Limit
Over-Voltage
Limit
100VAC
(CTs 8200 only)
90VAC
110VAC
120 VAC units
108VAC
132VAC
220V/230V/
240V units
198VAC
264VAC
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.
page 14
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.
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
Figure 5.2 Level-control Attenuation per Detent
Operation Manual
page 15
CTs Multi-Channel Power Amplifiers
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
CTs 8200A
IQ-MC8
VCA-MC8
Figure 5.5 1-VCAP Module
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.
Figure 5.6 4-VCAP Module
Figure 5.3 IQ-MC8 Module
Figure 5.4 VCA-MC8 Module
page 16
Operation Manual
CTs Multi-Channel Power Amplifiers
6 Troubleshooting
CONDITION: Power indicator is off.
CONDITION: Fault indicator is on.
POSSIBLE REASON
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: 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.
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.
Operation Manual
The amplifier channel has stopped operating. Return the unit to an authorized
Crown Service Center.
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.
page 17
CTs Multi-Channel Power Amplifiers
6 Troubleshooting
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.
CONDITION: Thermal indicator is
flashing.
POSSIBLE REASON:
•
•
Speakers not connected.
•
Open circuit due to speaker failure.
•
There is a short on the amplifier
output. First disconnect your speakers
from the affected channel(s) one by one
to determine if one of the loads is
shorted.
•
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).
DC or excessive low-frequency signal at
the amplifier’s output has enabled
speaker protection.
POSSIBLE REASON:
•
Input signal level is very low.
•
Input cables have become disconnected.
CONDITION: Bridge LED is flashing.
POSSIBLE REASON:
•
page 18
The mode switch was switched while the
power was on.
Operation Manual
CTs Multi-Channel Power Amplifiers
7 Specifications
CTs 4200: MINIMUM GUARANTEED POWER (in watts, 0.1% THD) 120VAC, 60 Hz units
Dual Mode
4
Channels Driven
1 kHz
Figure 7.1
CTs 4200
Power Chart
4 Ohm
8 Ohm
70V (25 Ohm) at 0.1% THD
Bridge-Mono Mode
Channel Pairs Driven
2
20 Hz - 20 kHz
260
180
220
215
190
220*
1
1 kHz
1 kHz
270
210
240
270
220
250
20 Hz - 20 kHz
225
210
245*
2
1 kHz
8 Ohm
16 Ohm
100V (50 Ohm) at 0.1% THD
1
20 Hz - 20 kHz
520
400
220
1 kHz
430
380
220*
20 Hz - 20 kHz
560
440
250
450
420
245*
* Constant Voltage full bandwidth power ratings support 100 Hz - 20 kHz due to automatic high-pass filters.
CTs 8200: MINIMUM GUARANTEED POWER (In watts, 0.1% THD) 120VAC, 60 Hz units
Dual Mode
Channels Driven
Figure 7.2
CTs 8200
Power Chart
4 Ohm
8 Ohm
70V (25 Ohm) at 0.1% THD
Bridge-Mono Mode
Channel Pairs Driven
8 Ohm
16 Ohm
100V (50 Ohm) at 0.1% THD
4
2
1 kHz
20 Hz - 20 kHz
1 kHz
1 kHz
1 kHz
200
160
200
175
155
185*
250
190
220
260
200
240
270
220
250
1 kHz
20 Hz - 20 kHz
1 kHz
1 kHz
400
320
200
350
310
185*
500
380
220
540
440
250
8
4
1
2
20 Hz - 20 kHz
230
220
230*
1
20 Hz - 20 kHz
460
440
230*
* Constant Voltage full bandwidth power ratings support 100 Hz - 20 kHz due to automatic high-pass filters.
Operation Manual
page 19
CTs Multi-Channel Power Amplifiers
7 Specifications
The following specifications apply to all models in Dual 8/4 ohm mode with 8-ohm loads unless otherwise specified.
Performance
Frequency Response (at 1 watt, 20 Hz - 20 kHz)
Phase Response (at 1 watt, 10 Hz - 20 kHz)
Signal to Noise Ratio below rated power (20 Hz to 20 kHz)
CTs 4200
CTs 8200
± 0.5 dB
± 0.5 dB
± 35°
± 35°
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
< 0.05%
< 0.05%
Damping Factor: 10 Hz to 400 Hz
Crosstalk (below rated power, 20 Hz to 1 kHz)
>180
>180
> 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
20 kilohms, 10 kilohms
20 kilohms, 10 kilohms
+ 20 dBu
+ 20 dBu
4/8 and 25 ohms (70V)
8/16 and 50 ohms (100V)
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)
20:1 (26 dB)
50:1 (34 dB)
71.4:1 (37 dB)
120V, 60 Hz. 220/230/240V, 50 Hz
100V, 50/60Hz. 120V, 60 Hz. 220/230/240V, 50 Hz
70W
70W
Input Impedance nominally balanced, nominally unbalanced
Maximum Input Level (before input compression)
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)
Power Draw at Idle (120VAC mains, all channels in 4/8 ohm mode)
Power Draw at Idle (120VAC mains, all channels in 70V mode)
Cooling
Dimensions: Width, Height, Depth
Net Weight, Shipping Weight
page 20
114W
114W
Continuously variable speed forced air, front-to-back airflow
Continuously variable speed forced air, front-to-back airflow
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
26 lb. 6 oz. (12 kg), 30 lb. 14 oz. (14 kg)
36 lb. 6 oz. (16.5 kg), 47 lb. (21.3 kg)
Operation Manual
CTs Multi-Channel Power Amplifiers
7 Specifications
Figure 7.3 CTs 8200 Typical Frequency Response (1 W)
Figure 7.4 CTs 8200 Typical Phase Response (1 W)
Figure 7.5 CTs 8200 Typical Damping Factor vs. Frequency
Operation Manual
page 21
CTs Multi-Channel Power Amplifiers
7 Specifications
Figure 7.6 CTs 8200 Typical Output Impedance vs. Frequency
Figure 7.7 CTs 8200 Typical Crosstalk vs. Frequency
page 22
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
Rated
Power
Line Current
120VAC
Line Current
230VAC
At Idle (8.4 Ohm mode )
At Idle (70/100V mode)
1/8th Power Pink Noise
Typical of program material
just at clip.
1/3rd Power Pink Noise
Typical of program material
with severe clipping.
Operation Manual
8 Ohms/Ch.
16 Ohms Bridge
4 Ohms/Ch.
8 Ohms Bridge
70V/Ch.
100V Bridge
200x4
400x2
260x4
520x2
220x4
220x2
8 Ohms/Ch.
16 Ohms Bridge
4 Ohms/Ch.
8 Ohms Bridge
70V/Ch.
100V Bridge
200x4
400x2
260x4
520x2
220x4
220x2
Watts
Thermal Dissipation
watts in
watts out
dissapated
70
114
0
0
70
114
239
389
60
98
Btu/hr
kcal/hr
5.2
2.6
400
99
301
1027
259
7.8
3.9
639
134
505
1722
434
5.3
2.7
427
110
318
1084
273
7.6
3.8
648
257
391
1336
337
11.8
5.9
1005
349
655
2236
564
7.9
4.0
668
286
382
1303
329
page 23
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 8200
Load
Rated
Power
Line Current
120VAC
Line Current
230VAC
At Idle (8.4 Ohm mode )
At Idle (70/100V mode)
1/8th Power Pink Noise
Typical of program material
just at clip.
1/3rd Power Pink Noise
Typical of program material
with severe clipping.
page 24
8 Ohms/Ch.
16 Ohms Bridge
4 Ohms/Ch.
8 Ohms Bridge
70V/Ch.
100V Bridge
160x8
320x4
200x8
400x4
200x8
200x4
8 Ohms/Ch.
16 Ohms Bridge
4 Ohms/Ch.
8 Ohms Bridge
70V/Ch.
100V Bridge
160x8
320x4
200x8
400x4
200x8
200x4
Watts
Thermal Dissipation
watts in
watts out
dissapated
70
114
0
0
70
114
239
389
60
98
Btu/hr
kcal/hr
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
Operation Manual
CTs Multi-Channel Power Amplifiers
9 Service
Crown amplifiers are quality units that rarely require servicing. Before returning your unit for service, please contact Crown Technical Support to verify the need for
servicing.
This unit has very sophisticated circuitry which should
only be serviced by a fully trained technician. This is one
reason why each unit bears the following label:
CAUTION: To prevent electric shock, do not
remove covers. No user serviceable parts
inside. Refer servicing to a qualified technician.
Complete the Crown Audio Factory Service Information
form, in the back of this manual, when returning a Crown
product to the factory or authorized service center. The
form must be included with your product inside the box
or in a packing slip envelope securely attached to the
outside of the shipping carton. Do not send this form
separately.
9.1 International and Canada Service
Service may be obtained from an authorized service center. (Contact your local Crown/Amcron representative or
our office for a list of authorized service centers.) To
obtain service, simply present the bill of sale as proof of
purchase along with the defective unit to an authorized
service center. They will handle the necessary paperwork
and repair.
Remember to transport your unit in the original factory
pack.
9.2 US Service
Service may be obtained in one of two ways: from an
authorized service center or from the factory. You may
choose either. It is important that you have your copy of
the bill of sale as your proof of purchase.
9.2.1 Service at a US Service Center
This method usually saves the most time and effort. Simply present your bill of sale along with the defective unit
to an authorized service center to obtain service. They
will handle the necessary paperwork and repair. Remember to transport the unit in the original factory pack. A list
of authorized service centers in your area can be obtained
from Crown Factory Service, or online from
http://www.crownaudio.com/support/servcent.htm.
Operation Manual
9.2.2 Factory Service
Crown accepts no responsibility for non-serviceable
product that is sent to us for factory repair. It is the
owner’s responsibility to ensure that their product is serviceable prior to sending it to the factory. Serviceable
product list is available at
http://crownweb.crownintl.com/crownrma/.
For more information, please contact us direct.
9.2.4 Packing Instructions
Important: These instructions must be followed. If they
are not followed, Crown Audio, Inc. assumes no responsibility for damaged goods and/or accessories that are
sent with your unit.
A Service Return Authorization (SRA) is required for
product being sent to the factory for repair. An SRA can
be completed online at www.crownaudio.com/support/
factserv.htm. If you do not have access to the web, please
call Crown’s Customer Service at 574.294.8200 or
800.342.6939 extension 8205.
2. Do not ship any accessories (manuals, cords, hardware, etc.) with your unit. These items are not
needed to service your product. We will not be
responsibility for these items.
For warranty service, we will pay for ground shipping
both ways in the United States. Contact Crown Customer
Service to obtain prepaid shipping labels prior to sending the unit. Or, if you prefer, you may prepay the cost of
shipping, and Crown will reimburse you. Send copies of
the shipping receipts to Crown to receive reimbursement.
Your repaired unit will be returned via UPS ground.
Please contact us if other arrangements are required.
9.2.3 Factory Service Shipping Instructions:
1. Service Return Authorization (SRA) is required for
product being sent to the factory for service. Please
complete the SRA by going to
www.crownaudio.com/support/factserv.htm. If you
do not have access to our website, call
1.800.342.6939, extension 8205 and we'll create the
SRA for you.
2. See packing instructions that follow.
3. Ship product to:
CROWN AUDIO FACTORY SERVICE
1718 W MISHAWKA RD.
ELKHART, IN 46517
4. Use a bold black marker and write the SRA number
on three sides of the box.
5. Record the SRA number for future reference. The
SRA number can be used to check the repair status.
1. Fill out and include the Crown Audio Factory Service Information sheet in the back of this manual.
3. When shipping your Crown product, it is important
that it has adequate protection. We recommend you
use the original pack material when returning the
product for repair. If you do not have the original
box, please call Crown at 800.342.6939 or
574.294.8210 and order new pack material. See
instructions for “foam-in-place” shipping pack. (Do
not ship your unit in a wood or metal cabinet.)
4. If you provide your own shipping pack, the minimum recommended requirements for materials are
as follows:
a. 275 P.S.I. burst test, Double-Wall carton that allows
for 2-inch solid Styrofoam on all six sides of unit or
3 inches of plastic bubble wrap on all six sides of
unit.
b. Securely seal the package with an adequate carton
sealing tape.
c. Do not use light boxes or “peanuts”. Damage caused
by poor packaging will not be covered under warranty.
Using your 'foam-in-place' shipping pack
Note: The foam-in-place packing is molded so that there
is only one correct position for your product.
3. Reset center cushion down over top of product's
chassis. The foam-in-place packing was molded to
accommodate different chassis depth sizes. If your
product's chassis does not completely fill the foamin-place cavity, you may use a soft but solid packing
material (such as paper or bubble wrap) behind the
chassis.
4. Enclose the completed Crown Audio Factory Service
Information form (or securely attach it to the outside
of carton) and re-seal the shipping pack with a
sturdy carton sealing tape.
9.2.5 Estimate Approval
Approval of estimate must be given within 90 days after
being notified by Crown Audio Inc. Units still in the possession of Crown after 90 days of the estimate will
become the property of Crown Audio Inc.
9.2.6 Payment of Non-Warranty Repairs
Payment on out-of-waranty repairs must be received
within 90 days of the repair date. Units unclaimed after
90 days become the property of Crown Audio Inc.
If you have any questions, please contact Crown Factory
Service.
Crown Factory Service
1718 W. Mishawaka Rd.,
Elkhart, Indiana 46517 U.S.A.
Telephone:
574.294.8200
800.342.6939 (North America,
Puerto Rico, and Virgin Islands only)
Facsimile:
574.294.8301 (Technical Support)
574.294.8124 (Factory Service)
Internet:
http://www.crownaudio.com
1. Open carton and lift center cushion leaving both
end-cushions in place.
2. Carefully place your product with the product's front
panel facing the same direction as arrows indicate.
page 25
CTs Multi-Channel Power Amplifiers
10 Warranty
UNITED STATES & CANADA
SUMMARY OF WARRANTY
3
AR
YE
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-
page 26
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.)
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.
HOW TO OBTAIN WARRANTY
SERVICE
DESIGN CHANGES
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
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.
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
Operation Manual
CTs Multi-Channel Power Amplifiers
10 Warranty
3
AR
YE
WORLDWIDE EXCEPT USA & 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 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
Operation Manual
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
page 27
CTs Multi-Channel Power Amplifiers
NOTES
page 28
Operation Manual
CTs Multi-Channel Power Amplifiers
Crown Audio Factory Service Information
Shipping Address: Crown Audio Factory Service, 1718 W. Mishawaka Rd., Elkhart, IN 46517
PLEASE PRINT CLEARLY
SRA #: __________________(If sending product to Crown factory service.)
Model: ____________________________________________
Serial Number: _____________________
Purchase Date: _____________
PRODUCT RETURN INFORMATION
Individual or Business Name: ____________________________________________________________________________________________________________________________________________________________
Phone #: __________________________________________________
Fax #: ________________________________________
E-Mail: _______________________________________________________
Street Address (please, no P.O. Boxes): _____________________________________________________________________________________________________________________________________________________
City: __________________________________________
State/Prov: ________________________________
Postal Code: _________________
Country: _________________________
Nature of problem: ___________________________________________________________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________________________________________________________________________
Other equipment in your system: _________________________________________________________________________________________________________________________________________________________
If warranty is expired, please provide method of payment. Proof of purchase may be required to validate warranty.
PAYMENT OPTIONS
I have open account payment terms. Purchase order required. PO#: __________________________________
COD
Credit Card (Information below is required; however if you do not want to provide this information at this time, we will contact you when your unit is repaired for the information.)
Credit card information:
Type of credit card:
MasterCard
Type of credit card account:
Personal/Consumer
Visa
American Express
Discover
Business/Corporate
Card # ______________________________________________ Exp. date: _____________ * Card ID #: __________________________
* Card ID # is located on the back of the card following the credit card #, in the signature area. On American Express, it may be located on the front of the card. This number is required to process the charge to your account. If you do not want to provide
it at this time, we will call you to obtain this number when the repair of your unit is complete.
Name on credit card:
____________________________________________________________________________
Billing address of credit card: __________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
Operation Manual
page 29
CTs Multi-Channel Power Amplifiers
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page 30
Operation Manual
CTs Multi-Channel Power Amplifiers
THIS PAGE INTENTIONALLY LEFT BLANK
Operation Manual
page 31
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