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Bose A20 manual Bose Corporation, The Mountain, Framingham, MA 01701-9168USA AM325453 Rev.07

Models: A20

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©2012 Bose Corporation, The Mountain,

Framingham, MA 01701-9168 USA

AM325453 Rev.07

Page 44

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Bose A20 manual Bose Corporation, The Mountain, Framingham, MA 01701-9168USA AM325453 Rev.07

Contents

A20 AVIATION HEADSET Owner’s GuideWarning Choking Important Safety InstructionsSAFETY INFORMATION CONTENTS USING THE HEADSETADVISORIES INTRODUCTIONHEADSET CARE AND MAINTENANCE TROUBLESHOOTINGINSTALLATION SERVICE AND WARRANTY INFORMATIONOperational advisory ADVISORIESHearing safety Volume controlUsing audio sources Recognizing aircraft soundsHeadset earcup requirements Earcup inner screenTriPort opening Microphone opening Earcup inner screenWhat’s included INTRODUCTIONAccessories What’s in the cartonHeadset assembly Control module variations Power and cable variations Battery powered optionsDual powered options INTRODUCTIONPREPARING THE HEADSET FOR USE The microphone assemblyAttaching the microphone assembly The battery compartment Opening the battery compartmentThe operation switches To change the operation switchesTo insert or replace the batteries Inserting and replacing the batteriesAuto Off functionality Connecting the headset to the aircraft Using the 6-pinplugTo connect the headset To disconnect the headsetMicrophone Intercom/Audio Using the dual general aviation plugsUsing other plug types Wearing and adjusting the headset USING THE HEADSETMicrophone placement Conditions related to fitClothing clips Mic label Mic is 1/2 inch from mouthMic is too far away Mic label is not facing mouth Press to open clipUsing the control module Power buttonPower indicator Volume controlAuxiliary AUX audio input Audio priorityMultifunction/Audio priority switch PositionFunction OperationUsing the headset with a Bluetooth-enabledphone Pairing the headset with your phoneBluetooth indicator light status Reconnecting to a previously connected phoneRecovering a lost connection Disconnecting a Bluetooth technology-enabledphoneBluetooth volume control To clear pairing device history from the headsetMaking and answering calls To make a callTo answer a call To end a callCleaning the headset General cleaningHEADSET CARE AND MAINTENANCE Instructions for continued airworthinessReplacing parts Microphone windscreen replacementMicrophone windscreen Headband cushionReplacing the ear cushions Ear cushion replacementBattery replacement Storage Headband cushion replacementMicrophone assembly or access cover replacement TROUBLESHOOTING In case of difficultyNoise Reduction CommunicationsAudio ProblemProblem TROUBLESHOOTINGAuxiliary audio input ProblemProblem TROUBLESHOOTINGBluetooth wireless technology Auto offProblem ProblemMounting the aircraft panel connector INSTALLATIONINSTALLATION Mono connection diagramStereo connection diagram Details on making the connections Helicopter U174 connection diagramINSTALLATION Pin numberTECHNICAL INFORMATION Category FAA Technical Standards OrderCondition Warranty Limited warranty serviceSERVICE AND WARRANTY INFORMATION Locating the headset serial numberOrdering parts and accessories Contact informationSERVICE AND WARRANTY INFORMATION Page 2012 Bose Corporation, The Mountain Framingham, MA 01701-9168USA AM325453 Rev.07