Bose A20 manual Important Safety Instructions, Safety Information

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SAFETY INFORMATION

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning this equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

–Re-orient or relocate the receiving antenna.

–Increase the separation between this equipment and receiver.

–Connect this equipment into an outlet on a circuit different from that to which the receiver is connected.

–Consult Bose or an experienced radio/TV technician for help.

Changes or modifications not expressly approved by Bose Corporation could void the user’s authority to operate this equipment.

Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

This device complies with FCC and Industry Canada RF radiation exposure limits for general population. It must not be collocated or operating in conjunction with any other antenna or transmitter.

Bose Corporation hereby declares that this product is in compliance with the essential requirements and other relevant provisions of Directive 1999/5/EC and all other applicable EU directive requirements. The complete declaration of conformity

can be found at: www.Bose.com/compliance.

Operate this product within the temperature range of 5°F to 131°F (-15°C to 55°C) only.

Important Safety Instructions

•Please read these instructions carefully and completely before using the headset.

•Keep these instructions and make these instructions easily accessible to all users at all times. Always include these instructions when passing the headset on to third parties.

•During flight operations, do not use the headset for telephone calls.

•It is the responsibility of each aircraft operator or pilot in command to determine that any and all portable devices will be free of any interference with the navigation or communication system of the aircraft. In addition, it is their responsibility to determine the suitability of the performance of portable devices in relation to the use of the Bose® A20® Aviation Headset.

•The headset is capable of producing sound pressure levels exceeding 85dB(A). In many countries 85dB(A) is the maximum legally permissible level for continuous noise exposure during the working day. Exposure to sounds of higher volume levels or longer durations can permanently damage your hearing.

•Never repair or attempt to repair a defective headset yourself. Contact Bose® Technical Support. Refer to “Contact information” on page 37.

•Do not immerse the headphones in water or any other liquid. See “Cleaning the headset” on page 23 for cleaning instructions.

•Warning: Choking

hazard. Keep the batteries away from children.

•Danger of explosion if

batteries are incorrectly replaced.

Replace only with AA alkaline batteries. Do not use any other battery chemistries.

Batteries may cause a fire or chemical burn if mishandled. Do not recharge, disassemble, heat, or incinerate. Dispose of used batteries properly.

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Contents A20 Aviation Headset Important Safety Instructions Safety InformationContents Troubleshooting Operational advisory Using audio sources Hearing safetyVolume control Recognizing aircraft soundsHeadset earcup requirements Earcup inner screenWhat’s included IntroductionHeadset assembly What’s in the cartonBluetooth control module Conventional control module Control module variationsPower and cable variations Battery powered options Dual powered optionsMicrophone assembly Attaching the microphone assemblyOperation switches Battery compartmentOpening the battery compartment To change the operation switchesTo insert or replace the batteries Inserting and replacing the batteriesAuto Off functionality To connect the headset Connecting the headset to the aircraftUsing the 6-pin plug To disconnect the headsetUsing the dual general aviation plugs Using other plug typesConditions related to fit Wearing and adjusting the headsetMicrophone placement Clothing clips Using the control module Power buttonPower indicator Indicator color Power source Type of light IndicatesAuxiliary AUX audio input Audio priorityMultifunction/Audio priority switch Multifunction/audio priority switch has three positionsUsing the headset With a Bluetooth-enabled phone Pairing the headset with your phoneRecovering a lost connection Bluetooth indicator light statusReconnecting to a previously connected phone Disconnecting a Bluetooth technology-enabled phoneBluetooth volume control To clear pairing device history from the headsetMaking and answering calls Instructions for airworthiness Cleaning the headsetGeneral cleaning Headset earcup openingsMicrophone windscreen Replacing partsMicrophone windscreen replacement Headband cushionReplacing the ear cushions Ear cushion replacementBattery replacement Storage Headband cushion replacementMicrophone assembly or access cover replacement Communications Case of difficultyNoise Reduction Audio Auxiliary audio input Bluetooth wireless technology Auto offMounting the aircraft panel connector Mono connection diagram Stereo connection diagramHelicopter U174 connection diagram Details on making the connectionsTechnical Information FAA Technical Standards Order Condition CategoryLocating the headset serial number WarrantyLimited warranty service To return your headset to Bose for repairOrdering parts and accessories Contact informationService and Warranty Information

A20 specifications

The Bose A20 Aviation Headset is a remarkable piece of technology designed specifically for aviators and aviation enthusiasts. Since its release, it has garnered a reputation for delivering superior sound quality, comfort, and durability. Manufactured by the well-known audio company Bose, this headset integrates cutting-edge features that enhance the flying experience for pilots and passengers alike.

At its core, the Bose A20 boasts advanced noise cancellation technology. It employs an active noise reduction system that effectively eliminates unwanted ambient noise, allowing users to concentrate on their surroundings and communication without distractions. This feature is especially crucial in the noisy environment of an aircraft cockpit, where engine noise levels can be overwhelming. The A20 significantly reduces this noise, enhancing clarity during radio transmissions.

The headset also offers excellent audio performance. With clear and balanced sound reproduction, the A20 ensures that every communication and audio alert is heard without distortion. This is complemented by integrated Bluetooth technology, which enables wireless connectivity to mobile devices. Pilots can easily stream music or receive phone calls while keeping their hands free, further enhancing the headset's functionality.

Comfort is another hallmark of the Bose A20. The headset is designed for long-duration wear, featuring plush ear cushions and a lightweight construction. The adjustable headband allows for a customized fit, minimizing fatigue even during extended flights. Additionally, the A20 is built to withstand the rigors of aviation use, with rugged materials that ensure longevity.

Another standout characteristic is the intuitive controls and design. The headset is user-friendly, with simple buttons that allow pilots to adjust noise cancellation levels and manage Bluetooth connections effortlessly. Furthermore, the inclusion of a detachable audio cable adds versatility, making it compatible with various aircraft and devices.

In conclusion, the Bose A20 Aviation Headset is a top choice for pilots seeking an exceptional combination of sound quality, advanced noise reduction, comfort, and user-friendly features. Its innovative technology and thoughtful design make it a vital tool for anyone serious about aviation, ensuring a more enjoyable and productive flying experience. Whether in a small general aviation aircraft or a larger commercial cockpit, the A20 stands out as a leader in the aviation headset market.
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