bose aviation headset a20 manual

The Bose Aviation Headset A20 is a premium aviation headset designed for pilots, featuring Active Noise Reduction (ANR), Bluetooth® audio and communication interface, auxiliary audio input, comfortable headband and ear cushions, dual plug configurations (dual GA or helicopter), and compatibility with most aircraft 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 to Aircraft 7. Using Bluetooth® 8. Care & Maintenance 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: Control Module with Bluetooth® button and AUX port, Headset with dual ear cups, Microphone boom with flexible tip, Aircraft cable with appropriate plug configuration, Carrying case.

FeatureDescription
Active Noise Reduction (ANR)Electronically reduces ambient cockpit noise
Bluetooth® interfaceFor wireless audio streaming and communication
Auxiliary audio input3.5mm jack for connecting external audio devices
Dual plug optionsStandard dual GA plug (U-174/U) or Helicopter plug (HELI)
ComfortFit™ headbandPadded, adjustable headband for extended wear
Plush ear cushionsProvide passive noise isolation and comfort
Flexible microphone boomNoise-canceling microphone with position memory
Control ModuleHouses volume/tone controls, Bluetooth® button, and AUX port
Auto-off functionConserves battery life when not in use
Battery status LEDIndicates battery level and charging status

Installation

Unpack and inspect contents. Ensure you have the correct plug configuration for your aircraft.

  1. Connect to aircraft: Plug the headset cable into the aircraft's intercom or audio panel jack.
  2. Position headset: Place headset on head, adjust headband for secure and comfortable fit.
  3. Position microphone: Bend the flexible boom so the microphone tip is approximately 1/4 to 1/2 inch from the corner of your mouth.
  4. Install batteries: Insert two AA batteries into the Control Module (if using battery power).

WARNING! Ensure headset is securely connected before engine start. Do not use if cables are frayed or damaged.

First-Time Setup

Power on headset; listen for startup tone.

  1. Pair Bluetooth® device: Press and hold Bluetooth® button on Control Module until LED flashes blue. Enable Bluetooth® on your phone/device and select "Bose A20".
  2. Adjust volume and tone: Use the rotary knobs on the Control Module to set overall volume and tone (bass/treble balance).
  3. Test microphone: Perform a radio check to ensure transmit audio is clear.
  4. Configure auxiliary input: Connect an audio device to the 3.5mm AUX port if desired.

CAUTION! Perform all headset checks during pre-flight procedures. Ensure ANR is functioning properly.

Specifications

Controls and Settings

Control Module: Volume knob (outer), Tone knob (inner), Bluetooth® button, AUX port, Battery compartment.

Bluetooth® Button: Press to pair/listen for battery status. Hold to enter pairing mode. Volume/Tone Knobs: Rotate to adjust. Microphone Boom: Flexible; position for optimal transmit audio.

Audio: Adjust volume for comfortable listening level; adjust tone to preference. Bluetooth®: Pair with phone for audio streaming and communication interlink. Power: Uses aircraft power when plugged in; auto-switches to batteries if aircraft power is lost.

Connecting to Aircraft

Ensure aircraft and headset are compatible.

  1. Identify plug type: Verify your headset has the correct plug for your aircraft's jack.
  2. Connect cable: Firmly insert the headset plug into the aircraft audio panel or intercom jack.
  3. Power source: Headset will typically draw power from the aircraft. If not, ensure batteries are installed.
  4. Test functionality: Perform a complete audio check including transmit and receive on all comm radios.

Tip: Always carry spare batteries for backup power.

Using Bluetooth®

Enables wireless audio and communication interface.

  1. Pairing: Enter pairing mode (flashing blue LED). Select "Bose A20" on your device.
  2. Audio Streaming: Play audio from your device; it will mix with aircraft audio.
  3. Communication Interlink: Allows you to connect your mobile phone through the headset for calls (functionality depends on aircraft intercom).
  4. Multiple Devices: Can remember multiple paired devices.
  5. Battery Status: Press Bluetooth® button briefly; voice prompt indicates battery level.

WARNING! Do not allow Bluetooth® usage to distract from primary flying duties. Comply with all aviation regulations.

Care & Maintenance

Clean headset with a soft, dry cloth. Replace ear cushions and microphone muff as needed.

CAUTION! Do not immerse in liquids. Do not use solvents or abrasive cleaners. Store in carrying case when not in use.

Regulatory Information

FCC ID: A94BOSEA20 (Contains FCC ID: QIP-BCM20702). This device complies with Part 15 of the FCC Rules. Bluetooth® is a registered trademark of Bluetooth SIG, Inc. Copyright © Bose Corporation. For support, visit www.bose.com/aviation or contact Bose Aviation Headset Division.

Troubleshooting

SymptomPossible CauseCorrective Action
No ANR (no noise reduction)Dead batteries / no powerReplace batteries; check aircraft power; ensure cable is fully plugged in.
No audio (receive)Volume low / aircraft settingsIncrease headset volume; check aircraft audio panel settings and squelch.
Microphone not transmittingBoom position / intercomReposition microphone closer to mouth; check aircraft intercom settings and PTT operation.
Bluetooth® not connectingPairing mode / device settingsEnter pairing mode (flashing blue LED); ensure device Bluetooth® is on and searching.
Distorted audioBattery level / interferenceReplace batteries; check for sources of electrical interference in aircraft.

Reset: Disconnect from aircraft and power cycle headset.

Service: Contact Bose Aviation Headset support or authorized service center.

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