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Audio Panel Controls
6
Rev. 0
Feb/06
N
SPKR/PA (SPEAKER/PASSENGER ADDRESS) SWITCH
The SPKR/PA switch has three functions:
• Speaker ON
• Speaker OFF
• Passenger address system ON.
The SPKR/PA rocker switch can be pushed to the left or right. Each
time the right side of the switch is pushed, the mode changes from left
to right as indicated by the light emitting diodes (LEDs) and does not
wrap around. Each time the left side of the switch is pushed, the mode
changes from right to left as indicated by the LEDs and does not wrap
around.
Pushing the SPKR/PA switch toggles between the following selections:
• ON - The ON light is illuminated, all selected audio will come over
the cockpit speaker (headset audio is always on).
• OFF - The OFF light is illuminated, no audio is available over the
cockpit speaker (headset audio is always on).
• PA - The PA light is illuminated; the pilot can transmit through the
microphone to the passenger cabin speaker. The normal
microphone push-to-talk (PTT) switch is used for the PA
function. The copilot can continue to use the selected COM
radio while the pilot is heard over the speaker. The pilot’s
microphone has priority if both the pilot and copilot PTT
switches are pressed at the same time and both audio pan-
els are on PA.
COM MIC (MICROPHONE) SELECTOR BUTTONS
The microphone input selector buttons are located along the upper
edge of the audio panel. The buttons are dedicated, momentary-action,
push buttons.
KMA 29 Audio Panel Pilot’s Guide