Crown Audio 14M, 28M Back Panel Controls and Connectors AC Power Inlet, Mixer Config Switch, Fuse

Commercial Audio Series Mixers

1Welcome

1.3Back Panel Controls and Connectors

J. AC Power Inlet

Detachable IEC.

K. Mixer Config Switch

A DIP switch with two functions:

1.Assigns one of the inputs as the priority input for each output, thereby temporarily muting the remaining inputs. Muting is activated by contact closure.

2.Global enable switch for phantom power. Does not affect RCA inputs. Default position is off.

M. Mic/line Switch

Selects mic-level or line-level input signals. One switch for each balanced input.

N. Dual RCA Input Connector

For stereo music signals, unbalanced, summed together, two connectors per input channel. If required, both the mic/ line and RCA inputs may be used at the same time. The mic/ line gain switch does not affect the RCA gain, which is fi xed relative to mic/line. The mic/line and RCA signals are mixed. Note: Other equipment connected to the RCA jacks should be connected to the same AC power source as the mixer to avoid hum.

P. Fuse

Protects the power supply.

Q Priority Connector

3-pin Phoenix-type connector allows Input 1 or Input 5 (28M only) to mute other input signals by contact closure.

R. Auxiliary Power Input

2-position terminal strip for 24 VDC (±10%) backup power. Accepts up to 10 AWG terminal forks. NOTE: To prevent a spark when attaching a battery, have unit turned on and connected to the mains supply.

L. Input Routing Switch (28M only)

DIP switches that assign each input signal to each output. Two switches per input.

The tone generator has been omitted. Call Crown Tech Support if you have tone generator questions.

O. Mic/Line Input Connector

3-pin Phoenix-type, balanced, one per input channel.

S. Line Out Connector

One 3-pin balanced Phoenix-type connector per output channel. Level controlled by master volume control.

Operation Manual

Figure 1.2 Back Panel Controls and Connectors
(28M shown)	page 7