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Crown International
1718 W. Mishawaka Rd.
Elkhart, IN 46517-9439
TEL: 574-294-8200
FAX: 574-294-8FAX
www.crownaudio.com
4/05 136318-1F\
CTs Series
Multi-channel
Weight (Net, Shipping):CTs 4200: 27 lb 8 oz (12.5 kg),
32 lb (14.5 kg)
CTs 8200: 36 lb 6 oz (16.5 kg),
47 lb (21.3 kg).
Front Panel Controls and IndicatorsBridge Mode Indicator: Yellow LED, one per chan-
nel pair, illuminates when the channel pairs Mode
Switch is set to the Bridge position. If Mode
switch is changed while ampli er is powered up,
Bridge LED will ash, indicating that the ampli er
must be powered off and on to reset the Mode.
Ready Indicator: Green LED, one per channel, illu-
minates when the channel is initialized and ready
to produce audio output.
Signal Indicator: Green LED, one per channel, illu-
minates to indicate the presence of input signals
above -“40 dBu.
Clip Indicator: Red LED, one per channel, illumi-
nates when the THD of the channels 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.
Thermal Indicator: Red LED, one per channel,
ashes when a state of thermal stress or overload
has caused the channel to shut down. If the power
supply goes into thermal overload, all channel
LEDs will ash.
Fault Indicator: Red LED, one per channel, ashes
when a fault condition has occurred in the channel.
Ventilation Grille: Front-to-rear forced air ow.
Data Indicator: Yellow LED indicates IQ Loop data
activity (if the ampli er is equipped with an IQ-MC
module, and connected to an IQ Loop).
Power Indicator: Blue LED indicates ampli er has
been turned on and AC power is available. Indica-
tor also ashes if the ampli er shuts off due to an
under-/over-voltage condition on the AC mains.
Power Switch: Ampli er is on when the switch is
in the IN position.
Back Panel Controls and Connectors
AC Power Cord Connector: IEC inlet, type 320;
100/120VAC units: 15A;
220/230/240VAC units: 10A.
Voltage is indicated above IEC inlet.
Output Connectors: One four-pole terminal strip
for every two channels with touch-proof cover.
Accepts up to 10 AWG terminal forks.
Accessory Panel: CTs 4200 accepts an optional
IQ-MC4A or VCA-MC4A module. CTs 8200 accepts
an optional IQ-MC8 or VCA-MC8 module.
Channel Level Controls: One 21-position detented
rotary potentiometer per channel, ranging from
in nity (-“70 dB) to 0 dB attenuation.
Input Connectors: Removable Phoenix-style bar-
rier connectors for balanced input.
Mode Switch: Used on each consecutive pair
of channels, this four-position switch is used to
select the ampli ers mode of operation: Dual 8/4
ohms, Dual 70V, Bridge-Mono 16/8 ohms, and
Bridge-Mono 100V.
Cooling Vents: Front-to-rear forced air ow.
Options
Control Modules: IQ-MC4A: IQ module for CTs
4200A; VCA-MC4A: VCA module for CTs 4200A.
IQ-MC8: IQ module for CTs 8200; VCA-MC8: VCA
module for CTs 8200.
Wall-mount level control panels for use with VCA
module: 1-VCAP: Single-gang panel with 1 VCA
channel volume control; 4-VCAP: Two-gang panel
with 4 VCA channel volume controls.
T-170V: This is an autoformer that allows 100V
output from the ampli er, and allows other ampli-
ers without direct constant voltage output to be
easily integrated into distributed systems.
TP-170V: This is a rack-mountable panel with four
autoformers as described above.
Protection Systems
Thermal Level Control (TLC): If an ampli er chan-
nel starts to overheat, the TLC circuit will engage
that channels input compressor. By compress-
ing the input, the ampli er 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 ash brightly to alert
the user that a state of thermal stress or overload
has cause the channel to shut down.
FIT (Fault Isolation Topology): Isolates faults
within affected channels.
Fault: If an ampli er channel requires service,
the corresponding Fault indicator will illuminate
to alert the user of this condition. If this occurs,
return the ampli er to the Crown factory or to an
authorized Crown service center.
35-Hz High-Pass Filter: A xed 35-Hz high-pass
lter per channel pair is automatically inserted
when the mode switch is set to either of the con-
stant-voltage settings. The high-pass lter corner
frequency can be set to 70 Hz, or bypassed, with
a service option.
AC Under-/Over-Voltage Protection: If the AC
line voltage varies out of an acceptable range, the
ampli ers power supply turns off and the blue
Power LED ashes. The ampli er will turn back on
when the AC line voltage returns to safe operating
levels.
Models
Under-Voltage
Limit Over-Voltage
Limit
100VAC (CTs 8200 only) 90VAC 110VAC
120 VAC units 108VAC 132VAC
220V/230V/240V units 198VAC 264VAC
Power Fuse: A fuse protects the ampli er from
excessive AC current draw.
Inrush Limiting: A soft-start circuit in the power
supply minimizes the ampli ers current draw
during power-on.
Variable-speed Fan: Continuously variable speed
fan directs the air ow through the ampli er for
cooling.
Speci cations subject to change without prior notice. Latest
information available at www.crownaudio.com.
Crown, Crown Audio, IQ System and Multi-Mode are
registered trademarks of Crown International. Other trade-
marks are the property of their respective owners.
Printed in U.S.A.
© 2005 Crown Audio
®, Inc.
Crowns Three-Year, No-Fault, Fully Transferable Warranty
Crown offers a Three-Year, No-Fault, Fully Transferable Warranty for every new Crown ampli er-an
unsurpassed industry standard. With this unprecedented No-Fault protection, your new Crown \
ampli er is warranted to meet or exceed original speci cations for the rst three years of ownership.
During this time, if your ampli er fails, or does not perform to original speci cations, it will be
repaired or replaced at our expense. About the only things not covered b\
y this warranty are those
losses normally covered by insurance and those caused by intentional abu\
se. And the coverage is
transferable, should you sell your ampli er.
See your authorized Crown dealer for full warranty disclosure and detail\
s. For customers outside
of the USA, please contact your authorized Crown distributor for warrant\
y information or call
574-294-8200.
