Operating instructions
Page 16  202-890-0402  PMA8000B Avidyne Pilot Guide 
whenever there is conversation on the radio, the intercom, or both, 
depending on the “Mute” mode selected. When that conversation 
stops, the music returns to the previous level comfortably, over a sec-
ond or so. 
The mute mode functions are controlled through sequential pushes of 
the Mute button, and include annunciations of the mode selected. 
Mode 1 - music will mute with either intercom or radio - MUTE but-
ton is lit. Voice annunciation is "mute on." 
Mode 2 - “Karaoke” mode - music will not mute except during trans-
missions.- MUTE LED is OFF. Annunciation is "mute off." 
Mode 3 - Radio will mute music, but intercom will not mute music - 
MUTE LED is OFF. Annunciation is "radio mute." 
Mode 4 - Radio will not mute music, intercom will mute music - 
MUTE LED is OFF. Annunciation is "intercom mute." 
The passenger’s intercom also has a SoftMute™ circuit. If the passen-
gers hear the radio, or talk on the intercom, the music will mute. If the 
audio panel is in CREW mode, then the radio reception will not affect 
the passenger music. 
Passengers also have a Karaoke Mode. If the passengers are listening 
to the music 1 input or front panel input, their Karaoke Mode is con-
trolled by the front panel “Mute” button. If the passengers are listen-
ing to the music 2 input, their Karaoke Mode is activated by an exter-
nal switch installed in the aircraft. 
Music 1 Volume 
In general, we recommend adjusting the entertainment volume at the 
sources, and only using this as a master gain control. However, the 
Music 1 volume can be adjusted from the front panel, if desired, by 
pressing the combinations of keys listed. 
♫ Music 
Intercom Radio Annunciation  LED 
Mode 1 
Muted Muted  Mute on  on 
Mode 2 
♫
  ♫ 
Mute off  off 
Mode 3 
♫
Muted Radio mute  off 
Mode 4 
Muted 
♫
Intercom mute  off 










