Shure SCM262 User Manual page 17

channel controls full counterclockwise, A-Weighted
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Publications
Master full counterclockwise
-95 dBV
Master full clockwise
-59 dBV
Common Mode Rejection
>70 dB, at 1 kHz
Polarity
All inputs to all outputs are non-inverting.
Overload and Shorting Protection
Shorting outputs, even for prolonged periods, causes no damage.Microphone inputs are not damaged by signals
up to +10 dBV; Line and Aux inputs by signals up to +28 dBV
Equalization
Bass (Low-frequency shelving, corner frequency at 250 Hz)
±6 dB
Treble (High-frequency shelving, corner frequency at 4 kHz)
±6 dB
Ducking
Mic channels 1 and 2 levels
-20 dB or -∞ dB
Activation time
10 ms, typical
Mic Deactivation time
2 seconds, typical
Jukebox Mute Deactivation Time
30 seconds, typical
Phantom Power
12 Vdc open-circuit through 680 Ω resistors
Operating Voltage