User Manual
Table Of Contents
- About your Bose® A20® Aviation Headset
- Components
- Preparing the Headset for Use11
- The battery compartment
- Connecting the headset to the aircraft
- Wearing and adjusting the headset
- Using the control module
- Primary and secondary audio sources
- AUX audio sources (wired)
- Bluetooth® audio sources (wireless)
- Using the headset with a Bluetooth® device
- Pairing the first device
- Pairing another device
- Switching between connected devices
- Bluetooth multi-function button
- Making and answering calls
- Reconnecting to a previously connected device
- Recovering a lost connection
- Disconnecting a Bluetooth device
- Clearing the headset pairing list
- Controlling Bluetooth volume
- Using the headset with a Bluetooth® device
- Secondary audio modes
- Cleaning the headset
- Instructions for continued airworthiness
- Managing multiple secondary sources
- Ordering parts and accessories
- Contact information
- Limited warranty
- Locating the headset serial number
- Mounting the aircraft panel connector
- Replacing parts
- Microphone windscreen
English - 11
Preparing the Headset for Use
e microphone assembly
Your headset may be shipped with the microphone assembly (boom microphone
and cable) attached to the left earcup. If you prefer, you can switch it to the right
earcup.
If your headset is shipped with the microphone assembly packed separately, you
can attach it to either earcup.
Attaching the microphone assembly
Choose the earcup (L or R) where you want to attach the microphone assembly.
Also, make sure that the earcup connector pins are clean and free of debris.
1. Use a Phillips screwdriver to loosen the two screws on the terminator cover
near the bottom of the earcup where you want to attach the microphone
assembly.
Remove the terminator cover to reveal the connector pins on the earcup.
2. Carefully line up the microphone assembly to the small connector socket on
the earcup.
3. Slide the connector into the socket until it reaches the stop.
Terminator
cover
Connector
pins
Microphone
assembly
Connector pins
L (left)
Caution: Do not force the connector into the socket, or earcup damage may occur.
4. Tighten the screws to secure the assembly.
5. Attach the terminator cover to the earcup that does not have the microphone
assembly attached. Insert the screws, then align and tighten them.
Note: The headset will not work without the terminator cover installed.
Caution: Be sure to try the headset and fully test its operation before flight.