Replace Bose A20 Microphone How To Change Your

Replace Bose A20 Microphone How To Change Your

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Middle Intercom mixed with When the switch is in the middle position and an intercom signal is detected, AUX audio is mixed with the intercom audio.

Bose Corporation hereby declares that this product is in compliance with the essential requirements and other relevant provisions of Directive 19995EC and all other applicable EU directive require- ments.

It delivers significantly increased noise reduction and provides a more comfortable fit, without compromising the clear audio you expect from Bose.

Plus, it offers auxiliary audio input and is available with Bluetooth compatibility.

Bluetooth control module Conventional control module LeftRight volume controls Power indicator Power button Bluetooth indicator.

Other configurations require the purchase of a cable assembly.

If your headset is shipped with the micro- phone assembly packed separately, you can attach it to either earcup.

Attaching the microphone assembly Choose the earcup (L or R) to receive the microphone assembly.

If you want to alter these defaults, you can change the operation switches located inside the control module battery compartment.

If you do not want to change any of the operation switches, skip ahead to Inserting and replacing the batteries.

This table shows possible positions, default setting, and purpose for each switch.

Auto Off ON, OFF Set at the factory to enable the Auto Off function.

Note: An adapter is available from Bose to convert a 6-pin connector to a dual GA or U174 plug for additional connection flexibility.

Microphone IntercomAudio Using other plug types The Bose Aviation Headset is also available with other types of plugs for connecting to various aircraft audio jacks.

These single-plug connectors should be inserted into the appropriate jack on your aircraft control panel.

Conditions related to fit A low rumbling sound or frequent, brief losses of Acoustic Noise Cancelling noise reduction may indicate an improper fit or blocked earcup ports.

Though it will be slightly off center, the microphone should be 12 inch from the opening of your lips.

There are two variations of the module; one featuring Bluetooth wireless technology and one that has basic functions only.

Bluetooth control module Conventional control module LeftRight volume controls Power indicator Power button.

To toggle the indicators between dim and bright, rapidly press the power button twice.

Volume control The left and right volume control wheels on the control module adjust the volume of the corresponding earcup.

Audio priority The Bose A20 Aviation Headset allows you to decide the priority of the audio sources you want to hear while using the headset.

On the Bluetooth control module, the audio priority is controlled by the multifunction switch.

On the conven- tional control module, the audio priority is controlled by the audio priority switch.