Bose A20 manual Wearing and adjusting the headset, Conditions related to fit, Microphone placement

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USING THE HEADSET

Wearing and adjusting the headset

Proper fit on your head is important both for comfort and optimal noise reduction performance. Here are a few guidelines:

•Use the left (L) and right (R) markings above the earcups to orient the headset properly.

R

L

•As you put the headset on, lightly grasp each earcup and adjust it so its cushion is completely over your ear. You should feel an even, gentle pressure all around each ear.

•Adjust the headband so it rests gently on top of your head.

Make your final adjustments with the headset powered on in a noisy environment.

In very loud conditions, such as during takeoff, you may experience a brief reduction in Acoustic Noise Cancelling® as the headset compensates for a momentary pressure change. If the problem continues when the sound level returns to normal, see “In case of difficulty” on page 27. If the problem persists, contact Bose® Technical Support for assistance.

Conditions related to fit

A low rumbling sound or frequent, brief losses of Acoustic Noise Cancelling noise reduction may indicate an improper fit or blocked earcup ports. See “Headset earcup openings” on page 23 for instructions on removing blockages.

During a long flight, you may feel a slight pressure point, which can be relieved by adjusting the headband position. Your experience with using the headset will help establish a sense of how it should sound and feel.

Microphone placement

Microphone placement is important for clear communications. With the headset on your head, make these adjustments:

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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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