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7. MUTING FUNCTION
Shorting DIN plugs pin-4 and pin-5 of rear-mounted Mic 1 input allows Mic 1 input to reduce the volume of
Mic 2, Mic 3, Aux1, and Aux 2 inputs by 0 to 30 dB. The attenuation level is preset for 30 dB at the factory. We
recommend using TOA's microphone PM-222D or PM-660D to bring the best results.
E
1
4
2
Remark: About Mute Function
When make operates Mute SW, the mute circuit works promptly.
It returns to an old state about 3 seconds later when it does break of Mute SW.
8. INSTALLATION
Keep the unit's all sides over 10 cm (3.94 inches) away from object that may obstruct air flow to prevent the unit's
internal temperature rise.
Over 10 cm
Over 10 cm
9. VOLUME CONTROL SETTINGS
Output levels are adjustable with individual volume controls. For music play or announcement, adjust the
corresponding volume control so that the red peak indicator lights intermittently.
Note that the sound quality is downgraded when the peak indicator remains lit.
3
5
Hot
Cold
Ground (Shield)
Mute Switch
MUTE ADJ
0
-30dB
Over 10 cm
9
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