Quick reference guide
Page 1
... instructions, and important safety information, refer to the supplied Bose A20 Aviation Headset Owner's Guide. When pairing is the first time you've activated or are trying to pair a headset that has previously been paired with your phone to "discover" the Bose A20 Aviation Headset Select "BOSE A20" on using the headset with the Power indicator. Set your Bluetooth mobile phone 1. If...
... instructions, and important safety information, refer to the supplied Bose A20 Aviation Headset Owner's Guide. When pairing is the first time you've activated or are trying to pair a headset that has previously been paired with your phone to "discover" the Bose A20 Aviation Headset Select "BOSE A20" on using the headset with the Power indicator. Set your Bluetooth mobile phone 1. If...
Quick reference guide
Page 2
... conserve the remaining power once the battery reaches this level. Auto Off function ON, OFF Set at least one second. 2. The Default: ON headset will not turn off until you press and hold the power button for stereo if your aircraft has a stereo intercom. Mono/Stereo MONO, STEREO... to stay securely closed during operation. The Bluetooth word mark and logos are property of inactivity. All other marks are registered trademarks owned by Bose Corporation is under license. You may need to OFF. To (Auto Off enabled) disable Auto Off, set the switch to use by Bluetooth...
... conserve the remaining power once the battery reaches this level. Auto Off function ON, OFF Set at least one second. 2. The Default: ON headset will not turn off until you press and hold the power button for stereo if your aircraft has a stereo intercom. Mono/Stereo MONO, STEREO... to stay securely closed during operation. The Bluetooth word mark and logos are property of inactivity. All other marks are registered trademarks owned by Bose Corporation is under license. You may need to OFF. To (Auto Off enabled) disable Auto Off, set the switch to use by Bluetooth...
Owner's guide
Page 2
...responsibility to determine the suitability of the performance of portable devices in water or any and all users at www.Bose.com/compliance. See "Cleaning the headset" on a circuit different from children. • Danger of Directive 1999/5/EC and other relevant provisions of ... only. Refer to "Contact information" on to third parties. • During flight operations, do not use of the Bose® A20™ Aviation Headset. • The headset is no guarantee that any other antenna or transmitter. This equipment generates, uses, and can permanently damage your hearing. •...
...responsibility to determine the suitability of the performance of portable devices in water or any and all users at www.Bose.com/compliance. See "Cleaning the headset" on a circuit different from children. • Danger of Directive 1999/5/EC and other relevant provisions of ... only. Refer to "Contact information" on to third parties. • During flight operations, do not use of the Bose® A20™ Aviation Headset. • The headset is no guarantee that any other antenna or transmitter. This equipment generates, uses, and can permanently damage your hearing. •...
Owner's guide
Page 3
... 9 The operation switches 9 Inserting and replacing the batteries 10 Connecting the headset to the aircraft 11 Using the 6-pin plug 11 Using the dual general aviation plugs 12 Using other plug types 12 USING THE HEADSET 13 Wearing and adjusting the headset 13 Conditions related to fit 13 Microphone placement 13 Clothing clips 14...
... 9 The operation switches 9 Inserting and replacing the batteries 10 Connecting the headset to the aircraft 11 Using the 6-pin plug 11 Using the dual general aviation plugs 12 Using other plug types 12 USING THE HEADSET 13 Wearing and adjusting the headset 13 Conditions related to fit 13 Microphone placement 13 Clothing clips 14...
Owner's guide
Page 4
... 6, 14 Tab 5, 13 Tab 4, 12 Tab 3, 11 Tab2, 10 English CONTENTS HEADSET CARE AND MAINTENANCE 23 Instructions for continued airworthiness 23 Cleaning the headset 23 General cleaning 23 Headset earcup openings 23 Microphone windscreen 24 Earcup inner screen 24 Headband cushion 24 Replacing parts 24... making the connections 33 TECHNICAL INFORMATION 34 SERVICE AND WARRANTY INFORMATION 36 Locating the headset serial number 36 Warranty period 36 Limited warranty service 36 To return your headset to Bose for repair 36 Contact information 37 Ordering parts and accessories 37 iii
... 6, 14 Tab 5, 13 Tab 4, 12 Tab 3, 11 Tab2, 10 English CONTENTS HEADSET CARE AND MAINTENANCE 23 Instructions for continued airworthiness 23 Cleaning the headset 23 General cleaning 23 Headset earcup openings 23 Microphone windscreen 24 Earcup inner screen 24 Headband cushion 24 Replacing parts 24... making the connections 33 TECHNICAL INFORMATION 34 SERVICE AND WARRANTY INFORMATION 36 Locating the headset serial number 36 Warranty period 36 Limited warranty service 36 To return your headset to Bose for repair 36 Contact information 37 Ordering parts and accessories 37 iii
Owner's guide
Page 5
... circuitry to reduce the effects of such failures and to allow for this headset to the aircraft" on page 6. The headset is needed, you can use of communications signal in the headset when used with any battery source other than the Bose A20 Aviation Headset control module. 1 See "Control module variations" on page 11. Symptoms of failure...
... circuitry to reduce the effects of such failures and to allow for this headset to the aircraft" on page 6. The headset is needed, you can use of communications signal in the headset when used with any battery source other than the Bose A20 Aviation Headset control module. 1 See "Control module variations" on page 11. Symptoms of failure...
Owner's guide
Page 6
... or a portable audio source through a Bose A20 Aviation Headset, be sure you must be sure to limit the volume to safe levels that do not interfere with the Acoustic Noise Cancelling® mode turned on. Recognizing aircraft sounds With the headset's active and passive noise reduction, typical ...warning alarms, and other sound sources) may need to in command, you can hear and recognize these sounds when using the Bose® A20™ Aviation Headset while operating any aircraft. Using audio sources When listening to turn up , while piloting. 2 Avoid setting the volume controls...
... or a portable audio source through a Bose A20 Aviation Headset, be sure you must be sure to limit the volume to safe levels that do not interfere with the Acoustic Noise Cancelling® mode turned on. Recognizing aircraft sounds With the headset's active and passive noise reduction, typical ...warning alarms, and other sound sources) may need to in command, you can hear and recognize these sounds when using the Bose® A20™ Aviation Headset while operating any aircraft. Using audio sources When listening to turn up , while piloting. 2 Avoid setting the volume controls...
Owner's guide
Page 7
...periods. 3 TriPort opening Microphone opening Earcup inner screen The protective inner screen is critical to the headset's ability to remove, replace, or repair this screen. The headset TriPort openings are located on the earcup are kept free of each earcup and include two holes ... Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 ADVISORIES Headset earcup requirements Proper headset operation requires that the headset TriPort® openings on the outside of debris. If screen replacement seems necessary, contact Bose® Technical Support. Earcup inner screen Do not attempt to reduce noise....
...periods. 3 TriPort opening Microphone opening Earcup inner screen The protective inner screen is critical to the headset's ability to remove, replace, or repair this screen. The headset TriPort openings are located on the earcup are kept free of each earcup and include two holes ... Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 ADVISORIES Headset earcup requirements Proper headset operation requires that the headset TriPort® openings on the outside of debris. If screen replacement seems necessary, contact Bose® Technical Support. Earcup inner screen Do not attempt to reduce noise....
Owner's guide
Page 8
... and is available with a control module, cable, and carrying case. The type of control module and end-plug configuration depends on your headset. What's included Each Bose A20 Aviation Headset is our most advanced aviation headset yet. There are several end-plug configurations for your purchase of two general categories: • Dual-powered: Aircraft powered with Bluetooth...
... and is available with a control module, cable, and carrying case. The type of control module and end-plug configuration depends on your headset. What's included Each Bose A20 Aviation Headset is our most advanced aviation headset yet. There are several end-plug configurations for your purchase of two general categories: • Dual-powered: Aircraft powered with Bluetooth...
Owner's guide
Page 9
See "Power and cable variations" on model of headset. English Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 INTRODUCTION What's in the carton Headset assembly: Accessories: Headphones Carrying case Clothing clip Control module See "Control module variations" on page 6 for options. 2 AA Alkaline batteries Second clothing clip 3.5 mm adapter cable Cable connector (varies) Note: Cable connector types will vary based on page 7. 5
See "Power and cable variations" on model of headset. English Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 INTRODUCTION What's in the carton Headset assembly: Accessories: Headphones Carrying case Clothing clip Control module See "Control module variations" on page 6 for options. 2 AA Alkaline batteries Second clothing clip 3.5 mm adapter cable Cable connector (varies) Note: Cable connector types will vary based on page 7. 5
Owner's guide
Page 11
Other configurations require the purchase of a cable assembly. 7 English Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 INTRODUCTION Power and cable variations The Bose® A20™ Aviation Headset is available for purchase in different standard aircraft connector options to suit pilot needs, including: • 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. 7 English Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 INTRODUCTION Power and cable variations The Bose® A20™ Aviation Headset is available for purchase in different standard aircraft connector options to suit pilot needs, including: • 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.
Owner's guide
Page 12
... for left Access cover Connector pins Microphone assembly Connector pins CAUTION: Do not force the connector into the socket until it to try the headset and fully test its operation before flight. 8 Use a Phillips screwdriver to attach the microphone assembly. 2. Slide the connector into the socket,...separately, you want to loosen the two screws on the earcup. 3. If your headset is shipped with the microphone assembly (boom microphone and cable) attached to the left earcup. Note: The headset will not work without the access cover installed. Also, make sure that does ...
... for left Access cover Connector pins Microphone assembly Connector pins CAUTION: Do not force the connector into the socket until it to try the headset and fully test its operation before flight. 8 Use a Phillips screwdriver to attach the microphone assembly. 2. Slide the connector into the socket,...separately, you want to loosen the two screws on the earcup. 3. If your headset is shipped with the microphone assembly (boom microphone and cable) attached to the left earcup. Note: The headset will not work without the access cover installed. Also, make sure that does ...
Owner's guide
Page 13
... change the operation switches 1. English Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 PREPARING THE HEADSET FOR USE The battery compartment The Bose® A20™ Aviation Headset is designed to the module. The cover is tethered to remain securely closed. Press down firmly on page 10. Note: The...
... change the operation switches 1. English Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 PREPARING THE HEADSET FOR USE The battery compartment The Bose® A20™ Aviation Headset is designed to the module. The cover is tethered to remain securely closed. Press down firmly on page 10. Note: The...
Owner's guide
Page 14
... to shut off even when there is an auxiliary input present. Press down firmly on a phone call and unplugged from an intercom, the headset will not turn off after you to the control module. The battery door is terminated. Replace the battery compartment cover. Note: Rechargeable batteries ...the factory for at the factory to provide audio in OFF position, the Acoustic Noise Cancelling® system will allow you stop using the headset. Insert the two supplied alkaline AA batteries into the control module, observing proper polarity. 4. The exact time it off until you disable...
... to shut off even when there is an auxiliary input present. Press down firmly on a phone call and unplugged from an intercom, the headset will not turn off after you to the control module. The battery door is terminated. Replace the battery compartment cover. Note: Rechargeable batteries ...the factory for at the factory to provide audio in OFF position, the Acoustic Noise Cancelling® system will allow you stop using the headset. Insert the two supplied alkaline AA batteries into the control module, observing proper polarity. 4. The exact time it off until you disable...
Owner's guide
Page 15
...Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 PREPARING THE HEADSET FOR USE Connecting the headset to the aircraft The Bose® A20™ Aviation Headset can be installed and mounted to either plug into aircraft power or rely entirely on battery power. Gently continue ...pulling back to remove the plug from Bose to convert a 6-pin connector to the slot on the ...
...Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 PREPARING THE HEADSET FOR USE Connecting the headset to the aircraft The Bose® A20™ Aviation Headset can be installed and mounted to either plug into aircraft power or rely entirely on battery power. Gently continue ...pulling back to remove the plug from Bose to convert a 6-pin connector to the slot on the ...
Owner's guide
Page 16
...Then insert the thinner microphone plug into the appropriate jack on page 7. 12 It will only fit into one of the headset has two general aviation (G/A) plugs that connect to the aircraft audio. These single-plug connectors should be inserted into the other jack. Refer to ... and cable variations" on your aircraft control panel. Although the plugs look similar, the microphone plug is also available with other plug types The Bose® A20™ Aviation Headset is shorter, thinner, and has a slightly different shape than the intercom plug. Tab 8, 16 Tab 7, 15 Tab 6, 14 Tab 5, 13...
...Then insert the thinner microphone plug into the appropriate jack on page 7. 12 It will only fit into one of the headset has two general aviation (G/A) plugs that connect to the aircraft audio. These single-plug connectors should be inserted into the other jack. Refer to ... and cable variations" on your aircraft control panel. Although the plugs look similar, the microphone plug is also available with other plug types The Bose® A20™ Aviation Headset is shorter, thinner, and has a slightly different shape than the intercom plug. Tab 8, 16 Tab 7, 15 Tab 6, 14 Tab 5, 13...
Owner's guide
Page 17
... blockages. English Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 USING THE HEADSET Wearing and adjusting the headset Proper fit on your head. If the problem persists, contact Bose® Technical Support for clear communications. Here are a few guidelines: • Use the left (L) and right (R) markings above...
... blockages. English Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 USING THE HEADSET Wearing and adjusting the headset Proper fit on your head. If the problem persists, contact Bose® Technical Support for clear communications. Here are a few guidelines: • Use the left (L) and right (R) markings above...
Owner's guide
Page 18
... its talk side facing in toward your lips. Tab 8, 16 Tab 7, 15 Tab 6, 14 Tab 5, 13 Tab 4, 12 Tab 3, 11 Tab2, 10 English USING THE HEADSET 1. Press to open clip Press to your lips. Position the microphone with two clothing clips. Grasp the boom with your lips. Use the clips to...
... its talk side facing in toward your lips. Tab 8, 16 Tab 7, 15 Tab 6, 14 Tab 5, 13 Tab 4, 12 Tab 3, 11 Tab2, 10 English USING THE HEADSET 1. Press to open clip Press to your lips. Position the microphone with two clothing clips. Grasp the boom with your lips. Use the clips to...
Owner's guide
Page 19
English Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 USING THE HEADSET Using the control module Use the control module to turn on or off, and control indicator brightness. • Press the power button once to turn ... the power button to turn Acoustic Noise Cancelling® on Acoustic Noise Cancelling noise reduction. • Press and hold the power button to control the headset functions.
English Tab 2, 10 Tab 3, 11 Tab 4, 12 Tab 5, 13 Tab 6, 14 Tab 7, 15 Tab 8, 16 USING THE HEADSET Using the control module Use the control module to turn on or off, and control indicator brightness. • Press the power button once to turn ... the power button to turn Acoustic Noise Cancelling® on Acoustic Noise Cancelling noise reduction. • Press and hold the power button to control the headset functions.
Owner's guide
Page 20
...® off the volume. Tab 8, 16 Tab 7, 15 Tab 6, 14 Tab 5, 13 Tab 4, 12 Tab 3, 11 Tab2, 10 English USING THE HEADSET • Double-click the power button to conserve the remaining power once the battery reaches this level. 16 Power indicator New alkaline AA batteries will... of the batteries. Even at its lowest setting, neither volume control wheel can completely turn off , volume control will generally supply at the headset control module. Battery life varies with the ambient noise level of the aircraft, temperature, ear cushion condition, use of the Bluetooth feature, and...
...® off the volume. Tab 8, 16 Tab 7, 15 Tab 6, 14 Tab 5, 13 Tab 4, 12 Tab 3, 11 Tab2, 10 English USING THE HEADSET • Double-click the power button to conserve the remaining power once the battery reaches this level. 16 Power indicator New alkaline AA batteries will... of the batteries. Even at its lowest setting, neither volume control wheel can completely turn off , volume control will generally supply at the headset control module. Battery life varies with the ambient noise level of the aircraft, temperature, ear cushion condition, use of the Bluetooth feature, and...