Garmin GMA 350 manual Enabling 3D Audio, 3D Audio Troubleshooting, Causes Solutions

GMA 350 Audio Panel

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. Refer to the following table if a headset or aircraft wiring problem is suspected.

3D Audio Troubleshooting

Symptom(s)		Cause(s)		Solution(s)
“3D audio	1)	Mono headset in use	1)	Use a stereo headset
left” message
heard in both	2)	Stereo headset in use	2)	Set mono/stereo switch on
ears.		with mono/stereo		headset to ‘stereo’
“3D audio		switch set to ‘mono’
right” message	3)	Aircraft wiring has	3)	If after checking solutions #1
not heard		left audio wired to		and #2 see a service center as
		both left and right		soon as possible to inspect/
		channels of stereo		correct wiring. This wiring fault
		headset jack		can cause fail-safe audio not to
				function.
“3D audio	1)	Mono headset in use	1)	Use a stereo headset
left” message
	2)	Stereo headset in use	2)	Set mono/stereo switch on
heard in both
		with mono/stereo		headset to ‘stereo’
ears, followed
		switch set to mono
by “3D audio
	3)	Incorrect aircraft	3)	If after checking solutions #1
right” message
heard in both		wiring (left/right		and #2 see a service center as
		shorted together)		soon as possible to inspect/
ears
				correct wiring. This wiring fault
				can cause fail-safe audio not to
				function.

22 Garmin GMA 350 Pilot’s Guide 190-01134-12 Rev. D