Bose A20 Aviation Owner's Manual
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Bose A20 Aviation Owner's Manual

Aviation headset
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A20
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VIATION
EADSET
Owner's Guide

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Summary of Contents for Bose A20 Aviation

  • Page 1 ™ VIATION EADSET Owner’s Guide...

  • Page 2: Important Safety Instructions

    – Consult Bose or an experienced radio/TV working day. Exposure to sounds of technician for help. higher volume levels or longer durations can permanently damage your hearing.

  • Page 3: Table Of Contents

    English Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 ONTENTS DVISORIES Operational advisory ......... 1 Hearing safety .
  • Page 4 Limited warranty service ........36 To return your headset to Bose for repair ..... . . 36 Contact information .

  • Page 5: Advisories

    If your headset is aircraft powered, connect the headset to the aircraft power sources only as described in “Connecting the headset to the aircraft” on page 11. The headset will not operate properly if used with any battery source other than the Bose A20 Aviation Headset control module.

  • Page 6: Hearing Safety

    Using audio sources When listening to in-flight entertainment, or a portable audio source through a Bose A20 Aviation Headset, be sure to limit the volume to safe levels that do not interfere with your ability to hear informational sounds and warning alarms,...

  • Page 7: Headset Earcup Requirements

    The protective inner screen is critical to the headset’s ability to reduce noise. Earcup inner screen Do not attempt to remove, replace, or repair this screen. If screen replacement seems necessary, contact Bose ® Technical Support. See “Contact information” on page 37.

  • Page 8: Introduction

    What’s included Each Bose A20 Aviation Headset is supplied with a control module, cable, and carrying case. The type of control module and end-plug configuration depends on the options you chose for your headset. There are two options for the control module: •...

  • Page 9: What's In The Carton

    English Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 NTRODUCTION What’s in the carton Headset assembly: Accessories: Headphones Carrying case Clothing clip 2 AA Alkaline batteries Control module See “Control module variations”...

  • Page 10: Control Module Variations

    Tab 8, 16 Tab 7, 15 Tab 6, 14 Tab 5, 13 Tab 4, 12 Tab 3, 11 Tab2, 10 English NTRODUCTION Control module variations ® If you opted for Bluetooth wireless technology, you received the control module featuring Bluetooth technology. If not, you received the conventional control module.

  • Page 11: Power And Cable Variations

    • Dual G/A • 6-pin install* • 5-pin XLR • U174 * An adapter is available from Bose to convert a 6-pin connector to a dual G/A plug for additional connection flexibility. Other configurations require the purchase of a cable assembly.

  • Page 12: Preparing The Headset For Use

    Tab 8, 16 Tab 7, 15 Tab 6, 14 Tab 5, 13 Tab 4, 12 Tab 3, 11 Tab2, 10 English REPARING THE EADSET FOR The microphone assembly Your headset may be shipped with the microphone assembly (boom microphone and cable) attached to the left earcup. If your headset is shipped with the microphone assembly packed separately, you can attach it to either earcup.

  • Page 13: The Battery Compartment

    Tab 8, 16 REPARING THE EADSET FOR The battery compartment The Bose ® A20™ Aviation Headset is shipped with factory-set operation defaults. If you want to alter these defaults, you can change the operation switches located inside the control module battery compartment. If you do not want to change any of the operation switches, skip ahead to “Inserting and...

  • Page 14: Inserting And Replacing The Batteries

    Tab 8, 16 Tab 7, 15 Tab 6, 14 Tab 5, 13 Tab 4, 12 Tab 3, 11 Tab2, 10 English REPARING THE EADSET FOR 3. To change a switch position, use a pen or a small, flat-tipped screwdriver to gently move the switch.

  • Page 15: Connecting The Headset To The Aircraft

    If your headset is aircraft-powered, a 6-pin connector must be installed and mounted to an aircraft panel. See “Mounting the aircraft panel connector” on page 31. Note: An adapter is available from Bose to convert a 6-pin connector to a dual G/A plug for additional connection flexibility. To connect the headset 1.

  • Page 16: Using The Dual General Aviation Plugs

    Then insert the thinner microphone plug into the other jack. Microphone Intercom/Audio Using other plug types The Bose ® A20™ Aviation Headset is also available with other types of plugs for connecting to various aircraft audio jacks. These single-plug connectors should be inserted into the appropriate jack on your aircraft control panel.

  • Page 17: Using The Headset

    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.

  • Page 18: Clothing Clips

    Tab 8, 16 Tab 7, 15 Tab 6, 14 Tab 5, 13 Tab 4, 12 Tab 3, 11 Tab2, 10 English SING THE EADSET 1. Grasp the boom with your fingers and move the microphone up or down so it is level with your mouth. 2.

  • Page 19: Using The Control Module

    English Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 SING THE EADSET Using the control module Use the control module to control the headset functions. There are two ®...

  • Page 20: Volume Control

    Tab 8, 16 Tab 7, 15 Tab 6, 14 Tab 5, 13 Tab 4, 12 Tab 3, 11 Tab2, 10 English SING THE EADSET ® • Double-click the power button to dim the power and Bluetooth wireless technology indicators. To toggle the indicators between dim and bright, rapidly press the power button twice.

  • Page 21: Auxiliary (Aux) Audio Input

    Auto Off feature for uninterrupted functionality. Audio priority The Bose A20 Aviation Headset allows you to decide the priority of the audio sources you want to hear while using the headset. On the Bluetooth control module, the audio priority is controlled by the multifunction switch. On the conventional control module, the audio priority is controlled by the audio priority switch.
  • Page 22 Tab 8, 16 Tab 7, 15 Tab 6, 14 Tab 5, 13 Tab 4, 12 Tab 3, 11 Tab2, 10 English SING THE EADSET Multifunction/Audio priority switch The multifunction/audio priority switch has three positions: Position Function Operation Intercom prioritized When the switch is in the top position and an over AUX intercom signal is detected, AUX audio is muted.

  • Page 23: Using The Headset With A Bluetooth

    Tools, Connect, or Bluetooth Devices. (Refer to the owner’s instructions that came with your phone for further details.) 4. Set the phone to “discover” or “add” a Bluetooth device. When Bose A20 appears in the list of devices, select and confirm this choice.
  • Page 24 Tab 3, 11 Tab2, 10 English SING THE EADSET Note: The Bose A20 Aviation Headset will automatically exit pairing mode after five minutes of inactivity. ® Bluetooth indicator light status The Bluetooth indicator is a blue light on the control module. It shows the status...

  • Page 25: Bluetooth Volume Control

    ® volume control The Bluetooth volume control increases or decreases the volume of the mobile phone that is paired to the Bose ® A20™ Aviation Headset. The Bluetooth volume control is located on the right side of the control module. You can only adjust the Bluetooth technology volume during an active phone call.

  • Page 26: Making And Answering Calls

    Tab 8, 16 Tab 7, 15 Tab 6, 14 Tab 5, 13 Tab 4, 12 Tab 3, 11 Tab2, 10 English SING THE EADSET Making and answering calls To make a call Dial from your mobile phone, and the call will automatically transfer to the ®...

  • Page 27: Headset Care And Maintenance

    If cleaning or replacement of these items is needed, follow the recommendations on the following pages. All other care and maintenance, in and out of the warranty period, must be performed by Bose or an authorized repair facility.

  • Page 28: Microphone Windscreen

    Do not attempt to remove, replace, repair, or clean this component. Located inside the earcup, the inner screen is critical to proper headset operation. If the screen appears to be damaged or worn out, contact Bose. If the inner screen becomes damp from environmental moisture such as light rain, dew, perspiration, or condensation, allow it to air dry only.

  • Page 29: Ear Cushion Replacement

    English Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 EADSET ARE AND AINTENANCE 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.

  • Page 30: Headband Cushion Replacement

    The headband cushion is designed to give the maximum level of comfort to your headset. Bose recommends that you replace the cushion after regular care and maintenance fails to restore the wool pile to its original size and shape. To replace the cushion: 1.

  • Page 31: Troubleshooting

    Look for the problem in the left column of the table, then follow the “What to do” instructions in the right column. If the problem persists, contact Bose using the contact information on page 37 of this guide for assistance.
  • Page 32 Tab 8, 16 Tab 7, 15 Tab 6, 14 Tab 5, 13 Tab 4, 12 Tab 3, 11 Tab2, 10 English ROUBLESHOOTING Problem What to do Low volume of • Check to see if the volume controls are set too low. incoming Refer to “Volume control”...
  • Page 33 English Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 ROUBLESHOOTING Problem What to do Low rumbling • Adjust the earcup fit to create a better seal on your head. The sound with the low-force design of the headset makes it sensitive to items that headset turned on...
  • Page 34 Tab 8, 16 Tab 7, 15 Tab 6, 14 Tab 5, 13 Tab 4, 12 Tab 3, 11 Tab2, 10 English ROUBLESHOOTING Problem What to do Cannot hear • Check headset prioritization settings. Refer to “Multifunction/ communications Audio priority switch” on page 18. while listening to •...

  • Page 35: Installation

    The aircraft panel connector is part of the optional 6-pin wiring harness assembly. Visit Bose.com or Global.Bose.com for information or purchase. CAUTION: The aircraft panel connector must be mounted by a technician who is qualified to perform this type of avionics installation for the aircraft you are using.
  • Page 36 CAUTION: Do not use excessive force or bend the installed connector. This may damage or break internal solder joints. Note: The aircraft panel connector cannot be installed in an audio system using transformer-coupled audio outputs. Contact the Bose ® Technical Support, using the contact information on page 37 of this guide for details.

  • Page 37: Details On Making The Connections

    English Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 NSTALLATION Helicopter (U174) connection diagram WHT/BLU MIC LO MIC HI COMM R COMM L 10-32 V+IN 1/2A V DC Existing single 4- prong jack Existing wiring to...

  • Page 38: Technical Information

    Operating: 5 to 131°F (-15 to 55°C) (Category A) Storage: -67 to 158°F (-55 to 70°C) Altitude: 15,000 feet maximum pressure altitude for full cancellation Bluetooth wireless technology Hands-free profile, Bluetooth 2.1 ® Bluetooth technology QD ID Bose A20™ Aviation Headset: B016487...
  • Page 39 Tab 8, 16 ECHNICAL NFORMATION FAA Technical Standards Order ® The Bose A20™ Aviation Headset, its interface, cables, and microphones are FAA approved to TSO C139. It has been designed to function in or withstand exposure to the following environmental conditions: Condition...

  • Page 40: Ervice And

    26. Warranty period Your Bose A20 Aviation Headset is covered by a limited 5-year warranty. Details of the limited warranty are provided on the warranty/product registration card included in the product carton. Ear cushions carry a six-month limited warranty against manufacturer defects.

  • Page 41: Contact Information

    E-MAIL: aviation_europe@Bose.com World Wide Web: www.Bose.com Ordering parts and accessories The following accessories and customer-replaceable parts can be purchased directly from Bose. See the contact information above. • Additional control module cable - Specify: Bluetooth ® technology or conventional module - Specify: connector type •...
  • Page 42 Tab 8, 16 Tab 7, 15 Tab 6, 14 Tab 5, 13 Tab 4, 12 Tab 3, 11 Tab2, 10 English...
  • Page 43 Tab 6, 14 Tab 7, 15 Tab 8, 16 ® The Bluetooth word mark and logos are registered trademarks owned by Bluetooth SIG, Inc., and any such use by Bose Corporation is under license. All other marks are property of Bose Corporation.
  • Page 44 ©2010 Bose Corporation, The Mountain, Framingham, MA 01701-9168 USA AM325453 Rev.06...

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