Australian Monitor AMC+MIX - Manual (Page 8)

Priority
Channel 1 will mute channels 2, 3 and 4. This will only occur when signal appears on channel 1,
irrespective of the channel volume control.
Priority can be disabled. (See below). The release time is approx. 3 secs and is NOT adjustable.
The mute depth is approx. 40dB and is not adjustable.
PAGE 8 AMC + MIX INSTALLATION AND OPERATION MANUAL
FUNCTIONAL NOTES AND INTERNAL ADJUSTMENTS