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GMA 245 Audio Panel
SPEAKER
Speaker audio turns off in circumstances where aircraft power
NOTE:
falls below 11 volts.
All of the radios can be heard over the cabin speaker. Pressing the
SPKR Key selects and deselects the cabin speaker. Radios are muted to
the speaker when a COM microphone is keyed. Aural alerts and warnings
are always heard on the speaker, even when the speaker is not selected.
3D AUDIO
3D Audio is useful when multiple audio sources are present. By using
different responses in each ear, 3D audio processing creates the illusion that
each audio source is coming from a unique location or seat position.
Because this feature uses different signals for left and right channels, it
requires wiring for stereo intercom and stereo headsets. If 3D audio is
activated when mono headsets are in use, the listener will still hear all audio
sources; however, there is no benefit from location separation.
With a single COM selected and 3D Audio enabled, the listener hears
the audio source at the 12 o'clock position. If both COMs are selected,
the listener hears COM1 at 11 o'clock and COM2 at the 1 o'clock position.
All other intercom positions are processed to sound like their relative seat
location. By default, the GMA 245 assumes the pilot sits in the left seat.
Refer to the GMA 245 Installation Manual to make changes to the default
configuration.
ENABLING 3D AUDIO
Press and hold the PILOT Key to toggle 3D audio processing on and off
for all headset positions. When 3D Audio is enabled, the aural message
"3D audio left" is heard in the left ear followed by "3D audio right" in the
right ear. If the aural messages are not heard in only the left and then the
right ear respectively, the cause may be aircraft wiring or headset settings.
16
Garmin GMA 245 Pilot's Guide
190-01879-10 Rev. F
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