Bogen TPU250 manual Bogen MBS1000 Microphone Cable, Page 7 of, Red - MIC + ‘MIC BAL’

Music Input A single RCA connector and screw terminals are provided for the connection of a background music source.The music input is a mono unbalanced input, so the music source’s output should be unbalanced and mono. If a balanced input is needed, use a Bogen Line-Matching Transformer WMT1A (sold separately) to balance the music input.The WMT1A is also effective in breaking ground loops that cause hum.

Microphone Input A high gain, low impedance microphone input is provided in this amplifier. It is designed to work with microphones like Bogen’s MBS1000 microphone. Connect the microphone's black wire to the amplifier's "-" (negative) terminal under the MIC BAL connections. Connect the microphone’s Red wire to the "+" (positive) terminal. Connect the shield wire from the microphone to the adjacent GND terminal.

Two conductor shielded microphone wire should be used to extend the cable from the microphone. 22 AWG shielded, twisted pair speaker cable will also work.When extending microphone cable, be sure to connect the shields of the microphone cable to the extension wire.

Figure 5: Connect Microphone to Telephone Paging Amplifier

	MIC VOLUME
				MODEL TPU250
	TEL VOLUME			250 WATT AMPLIFIER
	ALC		BOGEN COMMUNICATIONS
	APHEX		MUSIC IN	BRIDGING
MUSIC	MIC	GND	TEL	MUSIC	CONTACT	TEL
MUTE	+ BAL			IN GND	RING T	RING R

Shield - GND

MIC

White - MUSIC

Green - MUTE

Red - MIC + ‘MIC BAL’

Black - MIC - ‘MIC BAL’

Bogen

MBS1000

Microphone Cable

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