Bose QuietComfort 2 Manual

The Bose QuietComfort 2 is a premium noise-cancelling headphone model designed for superior audio quality and comfort during travel, work, or leisure. It features advanced noise cancellation technology, high-fidelity audio reproduction, a comfortable over-ear design with plush ear cushions, a detachable audio cable, an airplane adapter, a carrying case, and intuitive controls for power, noise cancellation, and volume. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Package Contents 3. Getting Started 4. Specifications 5. Controls and Indicators 6. Using the Headphones 7. Noise Cancellation 8. Care & Maintenance 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: Headphones with integrated electronics, Control Module (inline), Detachable Audio Cable, Airplane Adapter, Carrying Case.

Feature	Description
Noise Cancellation	Advanced electronic noise reduction for travel and noisy environments
Audio Performance	High-fidelity sound with balanced audio response
Comfort Design	Over-ear cushions with plush padding for extended wear
Control Module	Inline controls for power, noise cancellation, and volume
Detachable Cable	3.5mm audio cable for connection to audio sources
Airplane Adapter	Dual-prong adapter for in-flight entertainment systems
Carrying Case	Protective case for storage and transport
Battery Power	Single AAA battery for noise cancellation circuitry
Auto-Off	Automatic power-off to conserve battery life
Audio Passthrough	Listen to audio with noise cancellation on or off

Package Contents

Unpack and verify all items are present.

Bose QuietComfort 2 Headphones.
Detachable Audio Cable (3.5mm to 3.5mm).
Inline Control Module (attached to cable).
Airplane Adapter (dual-prong).
Protective Carrying Case.
AAA Battery (installed for demo).
User Manual and Warranty Information.

WARNING! Keep small parts away from children to avoid choking hazard.

Getting Started

Prepare headphones for first use.

Install Battery: Open battery compartment on control module; insert AAA battery with correct polarity.
Connect Cable: Plug detachable cable into headphone jack on left earcup until it clicks.
Power On: Slide power switch on control module to ON position; green indicator light will illuminate.
Connect to Source: Plug other end of cable into audio device (e.g., smartphone, MP3 player, laptop).
Adjust Fit: Extend headband and position earcups comfortably over ears.

CAUTION! Do not expose headphones to liquids or extreme temperatures.

Specifications

Type: Over-ear, closed-back noise-cancelling headphones.
Driver Size: Proprietary Bose transducers.
Frequency Response: Not specified by manufacturer (optimized for full-range audio).
Noise Cancellation: Active electronic noise reduction.
Connectivity: Wired via 3.5mm detachable cable.
Battery: 1 AAA alkaline battery (up to 35 hours of use).
Weight: Approximately 5.5 oz (156 g) without cable.
Cable Length: 48 inches (122 cm) detachable audio cable.
Operating Temp: 32°F to 104°F (0°C to 40°C).

Controls and Indicators

Control Module (inline on cable): POWER switch, NOISE CANCELLATION button, VOLUME slider.

Indicator Light: Green light indicates power and noise cancellation are active. If light flashes, battery is low.

Power: Slide switch to ON/OFF. Noise Cancellation: Press button to toggle noise cancellation ON/OFF (audible tone indicates status). Volume: Slide up/down to adjust listening level. Audio Passthrough: With noise cancellation OFF, audio still plays but without noise reduction.

Using the Headphones

For music, movies, phone calls, and travel.

Turn on power and enable noise cancellation as desired.
Connect to audio source using included cable.
Adjust volume to comfortable level.
For airplanes: Use airplane adapter to connect to seat jack.
To conserve battery: Turn off when not in use; unit will auto-off after approximately 5 minutes if no audio signal detected.

Tip: For best noise cancellation, ensure earcups form a seal around ears.

Noise Cancellation

Active noise reduction technology reduces ambient noise.

Press NOISE CANCELLATION button to turn feature ON (green light steady) or OFF (light off).
When ON, external noises (like engine rumble) are significantly reduced.
Noise cancellation works best with constant low-frequency sounds (airplanes, trains, office HVAC).
You may hear a slight hiss when no audio is playing; this is normal.
Audio quality remains high with noise cancellation ON or OFF.

WARNING! Do not use in situations where awareness of surroundings is critical (e.g., walking near traffic).

Care & Maintenance

Unplug cable before cleaning. Store in carrying case when not in use.

Cleaning: Use dry, soft cloth to wipe earcups and headband. Do not use liquids or cleaners on cushions. Battery: Replace AAA battery when indicator flashes or noise cancellation weakens. Remove battery if not using for extended periods. Cushions: Replaceable; contact Bose for replacement parts.

CAUTION! Do not immerse in water; avoid extreme heat or cold.

Regulatory Information

FCC Compliance: This device complies with Part 15 of the FCC Rules. Operation is subject to interference that may cause undesired operation. Copyright © Bose Corporation. All rights reserved. Bose and QuietComfort are trademarks of Bose Corporation. For support, visit www.bose.com or contact Bose Customer Service.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound	Power off / cable	Turn power ON; ensure cable is fully inserted at both ends; check audio source volume.
Noise cancellation not working	Battery / button	Replace battery; press NOISE CANCELLATION button to ensure ON (green light).
Flashing green light	Low battery	Replace AAA battery with fresh alkaline battery.
Poor audio quality	Connection / source	Check cable connections; try a different audio source; ensure earcups seal properly.
Auto-off not functioning	Audio signal present	Auto-off occurs only when no audio signal is detected for ~5 minutes.

Reset: Turn power OFF, remove battery for 30 seconds, reinsert battery, and power ON.

Service: Contact Bose Customer Support or visit www.bose.com for warranty and repair information.