Commercial Audio Series Mixer-Amplifiers

2 Setup

2.3 Choose Input Wire and Connectors

Crown recommends using pre-built or professionally wired bal- anced line (two-conductor plus shield), 22-24 gauge cables and connectors. Unbalanced line may also be used but may result in noise over long cable runs.

The 140MPA has two types of input connectors: Phoenix-type and RCA.

Mic/Line Connectors and Amp Input Connectors: 3-pinPhoenix-type, balanced, one per input channel (Figure 2.3).

 

MIC

+

 

Dual RCA Input Connector: For stereo music signals, unbalanced, summed together, two connectors per input (Figure 2.4).

Transformer-isolated 600-ohm input: 3-pin Phoenix- type. Summed into Input 1 for paging from a telephone system. See Figure 2.5.

+

To mic or line-level source

Figure 2.3 Mic/Line Connectors

and Amp Input Connectors

To stereo

 

 

 

 

line-level

-

 

source

 

 

 

 

 

 

Figure 2.4 Dual RCA Input Connectors

To telephone system interface/PBX output

Figure 2.5 Tel (Isolated)

Connector Wiring from Telephone System Interface or PBX

Operation Manual

page 9

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Crown Audio 140MPA operation manual Choose Input Wire and Connectors, Mic/Line Connectors Amp Input Connectors