thomann The box pro TP 108 MA, User Manual

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1 Mains switch POWER
Turns the unit on and off.
2 GND LIFT button
If a ground loop is causing hum you can use this key to break the connection between the earth pin of the device and
the signal ground in the device. The switch will only have an effect when using balanced connection cables.
3 ON LED
This LED lights up green when the device is turned on and power supply is present.
4 LED SIGN/LIMIT
This LED lights up green when an input signal is present.
This LED lights up red when the internal output signal is being limited (due to excessive input signal level!).
5 Rotary control MIC GAIN
MIC IN input signal gain control to adapt the active speaker to the characteristic of the used microphone.
Connections and operating elements
TP 108 MA
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