Garmin GMA 350c Pilot's Manual

Also see for GMA 350: Pilot's guide Installation manual Installation manual

Contents

190-01134-12 Rev. KGarmin GMA 350/350c Pilot’s Guide26GMA 350/350c Audio PanelSPLIT-PA MODEDuring Split-PA Mode the pilot can continue to use the radio(s) whilethe copilot delivers PA announcements. To initiate Split-PA Mode, firstenter Split-COM Mode by pressing both MIC Keys simultaneously,then press and hold the SPKR Key for 2 seconds.3D AUDIO3D Audio is useful when multiple audio sources are present. By usingdifferent responses in each ear, 3D audio processing creates the illusion thateach audio source is coming from a unique location or seat position.Because this feature uses different signals for left and right channels, itrequires wiring for stereo intercom and stereo headsets. If 3D audio isactivated when mono headsets are in use, the listener will still hear all audiosources; however, there is no benefit from location separation.With a single COM selected and 3D Audio enabled, the listener hearsthe 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 seatlocation. By default, the GMA 350/350c assumes the pilot sits in the leftseat. A Garmin authorized service center can make changes to the defaultconfiguration.ENABLING 3D AUDIOPress and hold the PILOT Key to toggle 3D audio processing on andoff for all headset positions. When 3D Audio is enabled, the auralmessage “3D audio left” is heard in the left ear followed by “3D audioright” in the right ear. If the aural messages are not heard in only theleft and then the right ear respectively, the cause may be aircraft wiringor headset settings. Refer to the following table if a headset or aircraftwiring problem is suspected.