User Guide

4 - English
Contents
Introduction ......................................................................................... 6
About your Bose
®
A20
®
Aviation Headset .......................................................................... 6
Our commitment to you ........................................................................................................ 6
What’s included ....................................................................................................................... 6
Components .............................................................................................................................7
Control module variations ............................................................................................ 8
Power and cable variations........................................................................................... 9
Preparing the headset for use .......................................................... 10
e microphone assembly ................................................................................................... 10
Attaching the microphone assembly ........................................................................10
e battery compartment .................................................................................................... 11
Opening the battery compartment ............................................................................ 11
e operation switches ................................................................................................. 11
Changing the operation switches ............................................................................... 11
Auto On .................................................................................................................... 12
Auto Off ..................................................................................................................... 12
Inserting and replacing the batteries ........................................................................ 13
Connecting the headset to the aircraft ............................................................................. 13
Using the 6-pin plug .....................................................................................................13
Using the dual general aviation plugs.......................................................................14
Using other plug types ................................................................................................. 14
Using the headset ............................................................................... 15
Wearing and adjusting the headset ...................................................................................15
Conditions related to fit ............................................................................................... 15
Microphone placement ................................................................................................16
Clothing clips ................................................................................................................. 16
Using the control module .................................................................................................... 17
Power button ................................................................................................................. 17
Power indicator .............................................................................................................. 18
Intercom volume controls ...........................................................................................18
Primary and secondary audio sources ..............................................................................19
AUX audio sources (wired) ................................................................................................... 19
Bluetooth
®
audio sources (wireless) ..................................................................................19
Using the headset with a Bluetooth
®
device ..........................................................20
Pairing the first device ..........................................................................................20
Pairing another device ........................................................................................... 21
Switching between connected devices ............................................................... 21
Bluetooth
®
multi-function button ....................................................................... 21
Making and answering calls ................................................................................ 22
Reconnecting to a previously connected device ..............................................23