Installation manual

Dolby

Model CP650 Installation Manual Back Panel Connectors

B-6

MIC MUX Connector on front setup control panel

An EQ microphone or mic multiplexer can be connected at this location without the

need for access to the CP650 rear panel. Pins 1, 2, and 5 are wired in parallel with the

rear-panel microphone input XLR connector. If you wish to use a connector already

wired for use with a Dolby CP500, add a jumper between pins 5 and 6.

Caution: It is essential that nothing be connected to the rear-panel microphone input

connector if this front-panel connector is used for performing equalization.

Table B–8 MIC MUX Connector

Pin Connection

1 + mic signal

2 – mic signal

3 n.c.

4 n.c.

5 Mic cable ground

6 n.c.

7 +15 V (through a PTC resistor) 100 mA max

8 Data ground

9 Digital control signals for multiplexer

Nonsync Input Connectors (1 and 2)

Both Nonsync input connectors are female phono (RCA-type) connectors and the

input circuit is unbalanced, 11 KΩ, sensitivity: 0.2–4 V for NS 1, and 0.06–1.5 V for

NS 2.

Remote Unit and Remote Fader Connector

Table B–9 Remote Unit and Remote Fader Connector Pinout

Pin Connection

1 Power +

2 Remote Data

3 Chassis Gnd

4 Chassis Gnd

5 Remote Fader Wiper

6 n.c.