Bose Aviation A20 Manual

The Bose Aviation A20 is a premium aviation headset designed for pilots, featuring Active Noise Reduction (ANR), Bluetooth connectivity for communication and audio streaming, auxiliary audio input, dual volume controls, priority-based audio mixing, and a comfortable headband with plush ear cushions. It is compatible with most aircraft audio panels and intercom systems. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Using Bluetooth 8. Care & Maintenance 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: Headset with ANR control module, aircraft cable, Bluetooth module (if equipped), carrying case, and accessories.

Feature	Description
Active Noise Reduction	Electronically reduces ambient cockpit noise
Bluetooth Connectivity	For wireless communication and audio streaming
Dual Volume Controls	Independent controls for intercom and auxiliary audio
Priority Audio Mixing	Prioritizes communication over music/audio
Auxiliary Audio Input	3.5mm jack for external audio devices
Comfort Headband	Adjustable with plush cushioning
Rotating Ear Cups	For comfortable fit and storage
ANR On/Off Switch	Activates/deactivates noise reduction
Microphone Mute	Mutes microphone during transmission
Battery Indicator	LED shows battery status

Installation

Unpack and inspect contents. Ensure all components are present.

Connect aircraft cable: Plug into aircraft audio panel or intercom system.
Attach control module: Clip to clothing or mount within reach.
Install batteries: Insert AA batteries into control module (if not using aircraft power).
Adjust headset: Extend headband and position ear cups for secure fit.

WARNING! Ensure headset is securely connected before engine start. Verify proper microphone placement for clear communication.

First-Time Setup

Power on headset; follow initial configuration steps.

Activate ANR: Press ANR button on control module; LED indicates status.
Pair Bluetooth: Hold Bluetooth button for 5 seconds to enter pairing mode; connect to mobile device.
Adjust volume: Set intercom and auxiliary audio levels using dual controls.
Test microphone: Transmit to ensure clarity and proper mute function.

CAUTION! Do not use headset if ANR or audio functions are impaired. Ensure battery polarity is correct.

Specifications

Noise Reduction: Active Noise Reduction (ANR) with adjustable levels.
Audio Inputs: Aircraft plug, 3.5mm auxiliary jack.
Bluetooth: Version 4.1, supports A2DP and HFP profiles.
Microphone: Electret with noise-canceling boom.
Power Source: AA batteries or aircraft power (10-32V DC).
Battery Life: Up to 45 hours with ANR on (alkaline batteries).
Weight: 12 ounces (340 grams).
Operating Temp: -10°C to 50°C (14°F to 122°F).

Controls and Settings

Access functions via control module buttons and headset controls.

Control Module: ANR On/Off, Bluetooth Pairing, Aux Volume, Intercom Volume, Battery Indicator LED.

Audio Mixing: Priority given to intercom communications over auxiliary audio. Volume Controls: Separate knobs for intercom and auxiliary audio. Microphone: Boom-mounted with mute button. Bluetooth: Pair, connect, disconnect via button. ANR: Adjustable via button; LED shows active status.

Connecting Devices

Aircraft: Use provided cable to audio panel. Auxiliary: 3.5mm cable to external audio source. Bluetooth: Pair with mobile devices.

Turn off headset before connecting cables.
Match plugs to ports (aircraft plug to panel, 3.5mm to auxiliary).
Power on headset and verify connections.

Tip: Ensure aircraft power is within 10-32V DC range if using aircraft power.

Using Bluetooth

Supports wireless communication and audio streaming.

Pairing: Hold Bluetooth button until LED flashes blue; select "Bose A20" on device.
Connect: Automatically reconnects when in range.
Audio Streaming: Play music/podcasts from paired device.
Phone Calls: Accept/end calls using device controls.
Disconnect: Hold Bluetooth button for 10 seconds to clear pairing.

WARNING! Maintain awareness of cockpit communications; priority mixing may reduce streaming audio during transmissions.

Care & Maintenance

Unplug before cleaning. Use dry, soft cloth for ear cushions and headband; avoid liquids.

CAUTION! Do not immerse in water; store in carrying case when not in use. Replace ear cushions if worn or damaged.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. CE marked for European compliance. Copyright © Bose Corporation. For support, visit www.bose.com/aviation or contact Bose Aviation Headset Support at 1-800-999-2073.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No ANR function	Batteries/connection	Replace batteries; ensure aircraft power connected; check ANR switch.
Bluetooth not pairing	Range/device settings	Ensure headset in pairing mode; move devices closer; restart Bluetooth.
Intermittent audio	Loose connections	Check aircraft cable and auxiliary connections; secure plugs.
Microphone not working	Mute activated/boom position	Disable mute; adjust boom closer to mouth; check cable.
Low battery warning	Battery depletion	Replace AA batteries; use fresh alkaline batteries.

Reset: Disconnect power for 30 seconds; reconnect and power on.

Service: 1-800-999-2073; www.bose.com/aviation