Connections; Tel / Emer Input; Ch1 Input (3); Ch2-Ch6 Xlr Inputs (6 & 7) - Optimus PM-CH7 Manual De Instalación Y Funcionamiento

PM-CH7
Preamplifier

4. CONNECTIONS

4.1. TEL / EMER INPUT

Euro-type screw terminal for TEL / EMER signal input. This input has the highest priority and
internal VOX function will mute any other signal when it is activated. It can not be controlled by
master volume potentiometer. Input level can be set by rotary control on the rear panel. VOX
threshold level adjustable from VR3 internal potentiometer.
4.2.

CH1 INPUT (3)

Euro-type screw terminal with selectable Mic / Line input sensitivity, contact / VOX priority
switching and optional phantom power. Three terminals for balanced audio connection (i.e.
GND / + / -) and two for priority contact input. Configurable preannouncement chime activated
by priority contact.
4.3. CH2-CH6 XLR INPUTS (6 & 7)
Balanced XLR input connector with Mic / Line input sensitivity and selectable phantom power.

4.4. CH7 INPUTS

CH7 includes three BGM inputs and general volume and tone controls.
The SELECTOR button located in the front panel is used to set the desired input to this
channel.

4.4.1. CD INPUT (9)

2 x RCA unbalanced connectors for CD input signal. The input sensitivity is 500 mV.
4.4.2. AUX / TUNER INPUT (10 & 11)
2 x RCA unbalanced connectors for music source
signal. The input sensitivity is 200 mV.
4.5. PRE OUT & POWER IN (12)
1 V Input / Output connectors used to loop the signal through external equipments (e.g.
equalizer or feedback destroyer).
1 x RCA PREOUT connector for preamplified and MASTER controlled signal output.
1 x RCA POWER IN input.
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