Bose A20 manual Ear cushion replacement, Battery replacement, Replacing the ear cushions

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HEADSET CARE AND MAINTENANCE

Ear cushion replacement

As a general rule, ear cushions should be replaced every six months or every 350 hours of use, depending on how often you fly. You may have to replace them more often, if you:

•Have a full beard or heavy whiskers.

•Subject the headsets to severe temperature extremes such as parking your airplane outside in severe cold or heat.

•Put excess strain on the cushions because of improper storage.

Indications that the ear cushions need replacing include:

•Flaking of the outer covering.

•Cuts or tears.

•Flattening of the cushion, reducing the effectiveness of the seal.

To extend the life of the ear cushions, perform regular cleaning as described in “General cleaning” on page 23.

Replacing the ear cushions

1.Grasp the ear cushion skirt where it folds into the slot on the earcup.

2.Gently pull the ear cushion skirt up and away from the earcup.

3.Properly align the replacement ear cushion with the earcup.

4.Tuck an edge of the ear cushion skirt into the slot behind the ear cushion flange. Be careful not to fold the skirt over.

5.Gently stretch the cushion around the earcup, working the skirt into the slot as you go.

6.Grasp the ear cushion and adjust its position to remove any folds in the skirt and wrinkles in the cushion.

Battery replacement

Refer to “Inserting and replacing the batteries” on page 10.

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Contents A20 Aviation Headset Safety Information Important Safety InstructionsContents Troubleshooting Operational advisory Volume control Hearing safetyUsing audio sources Recognizing aircraft soundsEarcup inner screen Headset earcup requirementsIntroduction What’s includedWhat’s in the carton Headset assemblyControl module variations Bluetooth control module Conventional control moduleBattery powered options Dual powered options Power and cable variationsAttaching the microphone assembly Microphone assemblyOpening the battery compartment Battery compartmentOperation switches To change the operation switchesTo insert or replace the batteries Inserting and replacing the batteriesAuto Off functionality Using the 6-pin plug Connecting the headset to the aircraftTo connect the headset To disconnect the headsetUsing other plug types Using the dual general aviation plugsConditions related to fit Wearing and adjusting the headsetMicrophone placement Clothing clips Power button Using the control moduleIndicator color Power source Type of light Indicates Power indicatorAudio priority Auxiliary AUX audio inputMultifunction/audio priority switch has three positions Multifunction/Audio priority switchPairing the headset with your phone Using the headset With a Bluetooth-enabled phoneReconnecting to a previously connected phone Bluetooth indicator light statusRecovering a lost connection Disconnecting a Bluetooth technology-enabled phoneTo clear pairing device history from the headset Bluetooth volume controlMaking and answering calls General cleaning Cleaning the headsetInstructions for airworthiness Headset earcup openingsMicrophone windscreen replacement Replacing partsMicrophone windscreen 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 Auto off Bluetooth wireless technologyMounting the aircraft panel connector Stereo connection diagram Mono connection diagramDetails on making the connections Helicopter U174 connection diagramTechnical Information Condition Category FAA Technical Standards OrderLimited warranty service WarrantyLocating the headset serial number To return your headset to Bose for repairContact information Ordering parts and accessoriesService 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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