Split-Pa Mode; 3D Audio; Enabling 3D Audio; 3D Audio Troubleshooting - Garmin Beil 407GX Cockpit Reference Manual

Nav/Com/XPDR/Audio Panel

SPLIT-PA MODE

During Split-PA Mode the pilot can continue to use the radio(s) while the copilot
delivers PA announcements. To initiate Split-PA Mode, first enter Split-COM Mode by
pressing more that one MIC Keys simultaneously, then press and hold the SPKR Key
for 2 seconds.

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 all three COMs are selected, the listener hears
the audio sources at the 11, 12 and 1 o'clock positions with the COM numbers
increasing clockwise. If two COMs are selected, the listener hears COM1 at the 11
o'clock position 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 350H
assumes the pilot sits in the right seat. A Garmin authorized service center can 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.

3D AUDIO TROUBLESHOOTING

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. Refer to the following table if a
headset or aircraft wiring problem is suspected.
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Garmin G1000H Cockpit Reference Guide for the Bell 407GX
™
190-01254-00 Rev. B