Cessna 182S Pilot Operating Handbook page 272

CESSNA
MODEL 182S
SECTION 9 - SUPPLEMENTS
SUPPLEMENT 3 - FAA APPROVED
SECTION 2
LIMITATIONS
There is no change to the airplane limitations when this avionic
equipment is installed.
SECTION 3
EMERGENCY PROCEDURES
In the event of a failure of the audio amplifier in the KMA 26, as.
evidenced by the inability to transmit in COM 1, 2 or 3.
1. MIC Selector Switch -- EMG.
NOTE
This action bypasses the KMA 26 audio amplifier and
connects the pilot's mic/head set directly to COM 1.
SECTION 4
NORMAL PROCEDURES
AUDIO CONTROL SYSTEM OPERATION:
1. MIC Selector Switch -- Turn to desired transmitter.
2. SPEAKER and Audio Select Button(s) -- SELECT desired
receiver(s).
NOTES
Rotation of the MIC selector switch selects the Com audio
automatically.