Crown CTS 4200 Back Panel Controls Connectors AC Power Cord Connector, Output Connectors

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 chan- nels 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 pre- cise 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 ampli- fier’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 Mode- switch 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