Crown Audio 160MA operation manual A Bcd, Setup, Commercial Audio Series Mixer-Amplifiers, page

Commercial Audio Series Mixer-Amplifiers

2 Setup

1.3Back Panel Controls, Connectors and Indicators

A. AC Power Inlet: Detachable IEC accepts

US or Euro style power cords.

B.Amplifier Output Connector: 4-position terminal barrier block with COM (Common), 8 ohms, 70V and 100V terminals. Accepts up to 10 AWG terminal forks. Clear non- touch cover included.

C.Amp Configuration DIP Switch: DIP switch selection for multiple functions.

1.On: Sets CH1 to Mic Input. Off: Sets CH1 to Line Input.

2.On: Sets CH1 to Normal mode (no prior- ity).

3.On: CH1 priority contact closure mutes other channels.

4.On: CH1 VOX mutes other channels by sensing signal through Input 1.

5.On: Routes CH1 to MOH output.

6.On: Routes CH2 to MOH output.

7.On: Routes CH3 to MOH output.

8.On: 15V phantom power.

D:Input Connectors 2-4 (160MA) or 2-3 (135MA)

Unbalanced line-level RCA-type connectors, summed to mono.

E.Preamp Line Out Connector: 3-pin bal- anced Phoenix-type for connection to exter- nal amplifiers. Level independent of master volume control.

F. MOH Level Control: Trim pot adjusts level for Music-On-Hold output from Telephone (MOH) Output Connector.

G. Telephone (MOH) Output Connector:

4-terminal Phoenix connector (2 terminals for 1W output to 8-ohm speaker, 2 terminals for 600-ohm output to PBX music-on-hold port).

H. VOX Threshold: Trim pot controls how loud the voice on CH1 must be before muting other channels. Can be set for no muting.

I.Input Connector 1: 5-terminal Phoenix connector. 3 terminals for balanced signal, 2 terminals for priority contact closure, which mutes other channels when DIP switch 3 is on.

A BCD

E	F G	H	I
Figure 1.2 Back Panel Controls, Connectors and Indicators
Operation Manual			page 7