Crown CTs-8200, CTs-4200 Operation Manual

CTs SERIES

uilding on the foundation of the Com-Tech® Series, Crown’s CTs Series offers new ﬂ ex-

ibility and value for installed sound applications. The Com-Tech Series were the ﬁ rst to offer independent selection of high- and low-impedance operation for a speciﬁ c channel, and CTs Series ampliﬁ ers continue that tradition, with power levels and features carefully chosen to perfectly integrate into ﬁ xed install design requirements. For added ﬂ exibility, the CTs Series includes both dual-channel and multi-channel models.

All models in the CTs Series feature Crown’s new Switching Power Supply for lighter weight, and all models are also compatible with the IQ System

. Multi-channel models accept new MC accessory modules that provide enhanced control, monitoring, and system integration.

The CTs multi-channel amps feature FIT (Fault Isolation Topology), which isolates channel-speciﬁ c 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.

In a profession where unplanned service calls quickly wipe out proﬁ ts, the CTs Series ampliﬁ ers are designed to be the most reliable ampliﬁ ers you can install.

For more details about the Crown

CTs Series, contact Crown Customer Service at 800-342-6939 or 574-294-8200. Also, visit the Crown Audio website at www.crownaudio.com.

Speciﬁ cations

Minimum Guaranteed Power: See power charts

below.

Frequency Response (at 1 watt, 20 Hz - 20 kHz): ±0.5 dB.

Phase Response (at 1 watt, 10 Hz - 20 kHz): ±35°.

Signal to Noise Ratio below rated power (20 Hz to

20 kHz): 100 dB unweighted.

Total Harmonic Distortion (THD) at 1 watt, from

20 Hz to 20 kHz: < 0.05%.

Intermodulation Distortion (IMD) 60 Hz and 7 kHz at 4:1, from 163 milliwatts to full bandwidth power: < 0.05% (typical).

Damping Factor: 10 Hz to 400 Hz: >180.

Crosstalk (below rated power, 20 Hz to 1 kHz):

> 80 dB.

Common Mode Rejection (CMR) (20 Hz to 1 kHz): > 50 dB.

DC Output Offset (Shorted input): < ±5 mV.

Input Impedance (nominal): 20 kilohms balanced,

10 kilohms unbalanced.

Maximum Input Level (before input compression): + 20 dBu.

Load Impedance (Note: Safe with all types of loads):

Stereo: 4/8 and 25 ohms (70V) Bridge Mono: 8/16 and 50 ohms (100V)

Voltage Gain (at maximum level setting), 1.4V sensitivity,

4/8 Ohm Operation: 20:1 (26 dB); 70V Operation: 50:1 (34 dB) 100V Operation: 71.4:1 (37 dB)

Required AC Mains: 120V 60 Hz, 220/230/ 240V/50 Hz.

Power Draw at Idle (120VAC mains, all channels in 4/8 ohm mode): 58W.

Power Draw at Idle (120VAC mains, all channels in 70V mode): 77W.

Cooling: Continuously variable speed forced air, front-to-back airﬂ ow.

Dimensions (Width, Height, Depth):

CTs 4200: 19 in. (48.3 cm) W x 3.5 in. (8.9 cm) H x 16.25 in. (41.3 cm) D.

CTs 8200: 19 in. (48.3 cm) W x 5.25 in. (13.3 cm) H x 16.25 in. (41.3 cm) D.

Features

• New Crown Switching Power Supply for reduced weight.

• High power-density, with four channels (CTs

4200) or eight channels (CTs 8200) in a 3U chassis.

• Selectable constant-voltage (70V/100V) or low-impedance (4/8 ohm) operation for each channel pair. (Channel pair must be operated in Bridge mode for 100V output).

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

• TLC protection circuitry protects the ampliﬁ er from excessive heat by subtly and dynamically reducing the gain only when necessary to reduce heat levels.

• Accepts new MC accessory modules that tailor the ampliﬁ er to suit speciﬁ c applications. Modules available for remote VCA level control and IQ System

Control.

• 35-Hz High-Pass Filter is automatically inserted when the channel pair is set for constant-voltage operation (corner frequency may be changed as a service option).

• 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 ﬂ ashes if the ampliﬁ er 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 topol-

ogy.

• Continuously-variable fans optimize cooling efﬁ ciency.

• Three Year, No-Fault, Fully Transferable Warranty completely protects your investment and guarantees its speciﬁ cations.

• Crown’s advance-replacement Proﬁ t Protection Plan provides quick, no-questions-asked replacement of covered amps should they fail at any time up to 6 months following date of installation.

CTs Series Multi-channel

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

1 kHz

CTs 4200

20 Hz–20 kHz

Dual

4 Channels Driven

260W 180W 220W

215W 190W 220W

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

1 kHz 20 Hz–20 kHz1 Channel Driven

270W 220W 250W

225W 210W 245W

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

1 kHz 20 Hz–20 kHz

Bridge-Mono

2 Channel-Pairs Driven

520W 400W 220W

430W 380W 220W

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

1 kHz 20 Hz–20 kHz1 Channel-Pair Driven

560W 440W 250W

450W 420W 245W

Maximum Average Power

in watts with 0.1% THD.

Constant Voltage full bandwidth power ratings support

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

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

1 kHz

CTs 8200

20 Hz–20 kHz

Dual

8 Channels Driven

200W 160W 200W

175W 155W 185W

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

1 kHz 20 Hz–20 kHz1 Channel Driven

270W 220W 250W

230W 220W 230W

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

1 kHz 20 Hz–20 kHz

Bridge-Mono

4 Channel-Pairs Driven

400W 320W 200W

350W 310W 185W

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

1 kHz 20 Hz–20 kHz1 Channel-Pair Driven

540W 440W 250W

460W 440W 230W

Maximum Average Power

in watts with 0.1% THD.

Constant Voltage full bandwidth power ratings support

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

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 Indicators

Bridge Mode Indicator: Yellow LED, one per chan-

nel pair, illuminates when the channel pair’s Mode Switch is set to the “Bridge” position. If Mode switch is changed while ampliﬁ er is powered up, Bridge LED will ﬂ ash, indicating that the ampliﬁ er must be powered off and on to reset the Mode.

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

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

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.

Thermal Indicator: Red LED, one per channel, ﬂ 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 ﬂ ash.

Fault Indicator: Red LED, one per channel, ﬂ ashes when a fault condition has occurred in the channel.

Ventilation Grille: Front-to-rear forced airﬂ ow.

Data Indicator: Yellow LED indicates IQ Loop data

activity (if the ampliﬁ er is equipped with an IQ-MC module, and connected to an IQ Loop).

Power Indicator: Blue LED indicates ampliﬁ er has been turned on and AC power is available. Indicator also ﬂ ashes if the ampliﬁ er shuts off due to an under-/over-voltage condition on the AC mains.

Power Switch: Ampliﬁ 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 inﬁ nity (–70 dB) to 0 dB attenuation.

Input Connectors: Removable Phoenix-style barrier connectors for balanced input.

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

Cooling Vents: Front-to-rear forced airﬂ 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 ampliﬁ er, and allows other ampliﬁ 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 ampliﬁ er chan-

nel starts to overheat, the TLC circuit will engage that channel’s input compressor. By compressing the input, the ampliﬁ 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 ﬂ 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 ampliﬁ er channel requires service, the corresponding Fault indicator will illuminate to alert the user of this condition. If this occurs, return the ampliﬁ er to the Crown factory or to an authorized Crown service center.

35-Hz High-Pass Filter: A ﬁ xed 35-Hz high-pass ﬁ lter per channel pair is automatically inserted when the mode switch is set to either of the constant-voltage settings. The high-pass ﬁ 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 ampliﬁ er’s power supply turns off and the blue Power LED ﬂ ashes. The ampliﬁ 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 ampliﬁ er from excessive AC current draw.

Inrush Limiting: A soft-start circuit in the power supply minimizes the ampliﬁ er’s current draw during power-on.

Variable-speed Fan: Continuously variable speed fan directs the airﬂ ow through the ampliﬁ er for cooling.

Speciﬁ 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 trademarks are the property of their respective owners. Printed in U.S.A.

, Inc.

Crown’s Three-Year, No-Fault, Fully Transferable Warranty

Crown offers a Three-Year, No-Fault, Fully Transferable Warranty for every new Crown ampliﬁ er—an unsurpassed industry standard. With this unprecedented No-Fault protection, your new Crown ampliﬁ er is warranted to meet or exceed original speciﬁ cations for the ﬁ rst three years of ownership. During this time, if your ampliﬁ er fails, or does not perform to original speciﬁ cations, it will be repaired or replaced at our expense. About the only things not covered by this warranty are those losses normally covered by insurance and those caused by intentional abuse. And the coverage is transferable, should you sell your ampliﬁ er.

See your authorized Crown dealer for full warranty disclosure and details. For customers outside of the USA, please contact your authorized Crown distributor for warranty information or call 574-294-8200.