Quick reference guide
Page 1
... on using the headset with a mobile phone, complete use instructions, and important safety information, refer to the supplied Bose A20 Aviation Headset Owner's Guide. Bose® A20™ Aviation Headset QUICK REFERENCE GUIDE Bluetooth® control module Conventional control module Left/Right volume controls* Power indicator Power button Bii iiiiiiii Bluetooth function button C Bluetooth Indicator Ai Multifunction switch: Top Intercom prioritized Middle Intercom mixed Bottom Intercom only Bluetooth Volume Up Bluetooth Volume down Auxiliary (AUX) audio input Audio Priority switch...
... on using the headset with a mobile phone, complete use instructions, and important safety information, refer to the supplied Bose A20 Aviation Headset Owner's Guide. Bose® A20™ Aviation Headset QUICK REFERENCE GUIDE Bluetooth® control module Conventional control module Left/Right volume controls* Power indicator Power button Bii iiiiiiii Bluetooth function button C Bluetooth Indicator Ai Multifunction switch: Top Intercom prioritized Middle Intercom mixed Bottom Intercom only Bluetooth Volume Up Bluetooth Volume down Auxiliary (AUX) audio input Audio Priority switch...
Owner's guide
Page 2
..., follow the instructions in the passive noise reducing mode, switch to an alternate communications method and use standard cockpit resource management skills to remove, replace, or repair the protective inner screen on the inside of the earcup, which is a danger of explosion if batteries are responsible for making sure that do not interfere with the Bose® A20® Aviation Headset. • Keep batteries out of...
..., follow the instructions in the passive noise reducing mode, switch to an alternate communications method and use standard cockpit resource management skills to remove, replace, or repair the protective inner screen on the inside of the earcup, which is a danger of explosion if batteries are responsible for making sure that do not interfere with the Bose® A20® Aviation Headset. • Keep batteries out of...
Owner's guide
Page 3
... your records: The serial number can radiate radio frequency energy and, if not installed and used in conjunction with this product within the temperature range of Bose Corporation. ©2014 Bose Corporation. English - 3 Changes or modifications not expressly approved by one of the FCC rules. The complete declaration of conformity can be collocated or operating in accordance with Part 15 of the homogeneous...
... your records: The serial number can radiate radio frequency energy and, if not installed and used in conjunction with this product within the temperature range of Bose Corporation. ©2014 Bose Corporation. English - 3 Changes or modifications not expressly approved by one of the FCC rules. The complete declaration of conformity can be collocated or operating in accordance with Part 15 of the homogeneous...
Owner's guide
Page 4
... batteries 12 Connecting the headset to the aircraft 13 Using the 6-pin plug...13 Using the dual general aviation plugs 14 Using other plug types 14 Using the Headset 15 Wearing and adjusting the headset 15 Conditions related to fit 15 Microphone placement 15 Clothing clips...16 Using the control module...17 Power button...17 Volume control...18 Power indicator...18 Auxiliary (AUX) audio input 19 Audio priority...19 Multifunction/Audio priority switch 20 Using the headset with a Bluetooth® compatible phone...
... batteries 12 Connecting the headset to the aircraft 13 Using the 6-pin plug...13 Using the dual general aviation plugs 14 Using other plug types 14 Using the Headset 15 Wearing and adjusting the headset 15 Conditions related to fit 15 Microphone placement 15 Clothing clips...16 Using the control module...17 Power button...17 Volume control...18 Power indicator...18 Auxiliary (AUX) audio input 19 Audio priority...19 Multifunction/Audio priority switch 20 Using the headset with a Bluetooth® compatible phone...
Owner's guide
Page 6
... audio input and is available with Bluetooth compatibility • Conventional control module There are two options for the headset. Introduction Congratulations on the options you expect from Bose. Your headset falls into one of a Bose® A20® Aviation Headset. What's included Each Bose A20 Aviation Headset is our most advanced aviation headset yet. The Bose A20 Aviation Headset is supplied with either aircraft or battery power. English No battery needed when connected to aircraft power...
... audio input and is available with Bluetooth compatibility • Conventional control module There are two options for the headset. Introduction Congratulations on the options you expect from Bose. Your headset falls into one of a Bose® A20® Aviation Headset. What's included Each Bose A20 Aviation Headset is our most advanced aviation headset yet. The Bose A20 Aviation Headset is supplied with either aircraft or battery power. English No battery needed when connected to aircraft power...
Owner's guide
Page 9
Introduction Power and cable variations The Bose® A20® Aviation Headset is available for purchase in different standard aircraft connector options, including: Battery powered options Operate with battery power only Dual G/A U174 U384 4-pin XLR Dual powered options Operate with either aircraft or battery power No battery needed when connected to aircraft power 6-pin* 5-pin XLR 8-pin * An adapter is available from Bose to convert a 6-pin connector to a dual G/A or U174 plug for additional connection flexibility. Other...
Introduction Power and cable variations The Bose® A20® Aviation Headset is available for purchase in different standard aircraft connector options, including: Battery powered options Operate with battery power only Dual G/A U174 U384 4-pin XLR Dual powered options Operate with either aircraft or battery power No battery needed when connected to aircraft power 6-pin* 5-pin XLR 8-pin * An adapter is available from Bose to convert a 6-pin connector to a dual G/A or U174 plug for additional connection flexibility. Other...
Owner's guide
Page 11
Note: For aircraft-powered versions (5-pin XLR, 6-pin, 8-pin) batteries are installed, remove them. Open the battery compartment. 2. English - 11 Opening the battery compartment You must open the battery compartment to the module. Note: The battery compartment cover is shipped with factory-set operation defaults. In the battery compartment, you can change the switch positions. Press down firmly on page 12. You may need to use additional force when pressing down . If batteries are not required for...
Note: For aircraft-powered versions (5-pin XLR, 6-pin, 8-pin) batteries are installed, remove them. Open the battery compartment. 2. English - 11 Opening the battery compartment You must open the battery compartment to the module. Note: The battery compartment cover is shipped with factory-set operation defaults. In the battery compartment, you can change the switch positions. Press down firmly on page 12. You may need to use additional force when pressing down . If batteries are not required for...
Owner's guide
Page 12
... provide audio in both ears). Do not detach the door from the intercom to listen to auxiliary input audio, or using the headset. WARNING: Replace batteries with alkaline batteries only. Replace the battery compartment cover. This table shows possible positions, default setting, and purpose for Use 3. With the switch in use a pen or a small, flat-tipped screwdriver to the control module. The exact time it will shut off headset power. 2. Press...
... provide audio in both ears). Do not detach the door from the intercom to listen to auxiliary input audio, or using the headset. WARNING: Replace batteries with alkaline batteries only. Replace the battery compartment cover. This table shows possible positions, default setting, and purpose for Use 3. With the switch in use a pen or a small, flat-tipped screwdriver to the control module. The exact time it will shut off headset power. 2. Press...
Owner's guide
Page 13
Note: An adapter is aircraft-powered, a 6-pin connector must be configured 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 a dual G/A or U174 plug for Use Connecting the headset to the aircraft The Bose® A20® Aviation Headset can be installed and mounted to the slot on the plug to an aircraft panel...
Note: An adapter is aircraft-powered, a 6-pin connector must be configured 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 a dual G/A or U174 plug for Use Connecting the headset to the aircraft The Bose® A20® Aviation Headset can be installed and mounted to the slot on the plug to an aircraft panel...
Owner's guide
Page 18
... batteries. Battery life varies with alkaline batteries only. With Acoustic Noise Cancelling® off the volume. Overall headset volume control requires adjustments at both the aircraft intercom or radio and at least 45 hours of the aircraft, temperature, ear cushion condition, use any other battery chemistries. *Bluetooth wireless technology is disabled to dim the power and Bluetooth wireless technology indicators. English Volume control The left earcup. • Use the right wheel to loud sounds...
... batteries. Battery life varies with alkaline batteries only. With Acoustic Noise Cancelling® off the volume. Overall headset volume control requires adjustments at both the aircraft intercom or radio and at least 45 hours of the aircraft, temperature, ear cushion condition, use any other battery chemistries. *Bluetooth wireless technology is disabled to dim the power and Bluetooth wireless technology indicators. English Volume control The left earcup. • Use the right wheel to loud sounds...
Owner's guide
Page 19
...) adapter cable to make or receive calls, we recommend you disable the Auto Off feature for uninterrupted functionality. Note: This feature will shut off even when there is turned on battery power only, and it is not plugged into the headset AUX audio input. Audio priority The Bose A20 Aviation Headset allows you to decide the priority of the control module as a portable GPS or a portable audio device...
...) adapter cable to make or receive calls, we recommend you disable the Auto Off feature for uninterrupted functionality. Note: This feature will shut off even when there is turned on battery power only, and it is not plugged into the headset AUX audio input. Audio priority The Bose A20 Aviation Headset allows you to decide the priority of the control module as a portable GPS or a portable audio device...
Owner's guide
Page 21
... to pair a headset that the headset is in "discoverable" mode and ready to be paired to a phone. Using the Headset Using the headset with a Bluetooth compatible phone Pairing the headset with your mobile phone Before you use your Bose® A20® Aviation Headset with your phone's Bluetooth feature: iOS 5: Settings > General > Bluetooth iOS 6: Settings > Bluetooth Android: Settings > Wireless and Networks > Bluetooth or Bluetooth settings Blackberry: Home > Manage Connections > Set up Bluetooth For other phones, check the phone's user guide. 4. Power button Power indicator...
... to pair a headset that the headset is in "discoverable" mode and ready to be paired to a phone. Using the Headset Using the headset with a Bluetooth compatible phone Pairing the headset with your mobile phone Before you use your Bose® A20® Aviation Headset with your phone's Bluetooth feature: iOS 5: Settings > General > Bluetooth iOS 6: Settings > Bluetooth Android: Settings > Wireless and Networks > Bluetooth or Bluetooth settings Blackberry: Home > Manage Connections > Set up Bluetooth For other phones, check the phone's user guide. 4. Power button Power indicator...
Owner's guide
Page 22
... not connected to one Bluetooth device at the same rate with the power indicator. Note: The Bose A20 Aviation Headset can only be connected to a phone. English If a connection still does not exist after five minutes of Bluetooth functions, as follows: Appearance Flashes slowly, alternating with the power indicator (green or amber). Headset is disconnected and the control module enters pairing mode. Bluetooth technology is a blue light on control module will automatically exit pairing mode...
... not connected to one Bluetooth device at the same rate with the power indicator. Note: The Bose A20 Aviation Headset can only be connected to a phone. English If a connection still does not exist after five minutes of Bluetooth functions, as follows: Appearance Flashes slowly, alternating with the power indicator (green or amber). Headset is disconnected and the control module enters pairing mode. Bluetooth technology is a blue light on control module will automatically exit pairing mode...
Owner's guide
Page 29
... volume controls are replaceable by the user. See "Volume control" on page 18 for instructions on . • Check the power indicator. What to turn the headset on volume adjustment. • Check the volume setting of the power indicator. • If using aircraft power, check the aircraft fuse or circuit breaker. • If using the contact information on page 10. Only the boom microphone cable, access cover, batteries, windscreen, headband cushion, and ear cushions are set too low...
... volume controls are replaceable by the user. See "Volume control" on page 18 for instructions on . • Check the power indicator. What to turn the headset on volume adjustment. • Check the volume setting of the power indicator. • If using aircraft power, check the aircraft fuse or circuit breaker. • If using the contact information on page 10. Only the boom microphone cable, access cover, batteries, windscreen, headband cushion, and ear cushions are set too low...
Owner's guide
Page 30
...;Troubleshooting Problem What to do Low volume of audio supplied to the headphone jack. If dust or dirt is correct. Squealing or whistling sound when the headset is turned on the earcup with no air gaps around your ears are completely inside the ear cushions, and that interfere with the seal. • If the squealing or whistling sound persists, turn off the power switch and contact Bose for continued use...
...;Troubleshooting Problem What to do Low volume of audio supplied to the headphone jack. If dust or dirt is correct. Squealing or whistling sound when the headset is turned on the earcup with no air gaps around your ears are completely inside the ear cushions, and that interfere with the seal. • If the squealing or whistling sound persists, turn off the power switch and contact Bose for continued use...
Owner's guide
Page 31
.... • Check the connection between the auxiliary source and the control module. Both ends of the AUX IN connector cable must be either in place and properly connected. Replace any cushions that interfere with the seal around your head. Refer to "Wearing and adjusting the headset" on in one ear only from auxiliary source. Make sure your headset is battery-powered, check to the...
.... • Check the connection between the auxiliary source and the control module. Both ends of the AUX IN connector cable must be either in place and properly connected. Replace any cushions that interfere with the seal around your head. Refer to "Wearing and adjusting the headset" on in one ear only from auxiliary source. Make sure your headset is battery-powered, check to the...
Owner's guide
Page 32
... the phone has Bluetooth enabled. • Turn the multifunction switch on again. • Follow your phone instructions to audio from each other). • Make sure the volume is turned up on . What to do • In the battery compartment, make sure the headset and phone are paired, the multifunction switch is set to ON (default). • Refer to "The operation switches" on page 11 for pairing the headset with your phone is not pairing...
... the phone has Bluetooth enabled. • Turn the multifunction switch on again. • Follow your phone instructions to audio from each other). • Make sure the volume is turned up on . What to do • In the battery compartment, make sure the headset and phone are paired, the multifunction switch is set to ON (default). • Refer to "The operation switches" on page 11 for pairing the headset with your phone is not pairing...
Owner's guide
Page 35
... jack Existing wiring to helicopter intercom/ audio panel Barrel (audio gnd) Installation Note: Barrel ground (gnd) refers to the existing audio ground. 3 White COMM L: Phone communication: Left. 4 Blue COMM R: Phone communication: Right. Note: For stereo operation, connect the left and right channels to the PTT segment of a headset microphone plug. Note: The wires connecting pins 3 and 4 and pins 5 and 6 are detailed in the table below: Pin number Color Purpose 1 Red V+IN: Headset power (10-32 VDC). Details on radio...
... jack Existing wiring to helicopter intercom/ audio panel Barrel (audio gnd) Installation Note: Barrel ground (gnd) refers to the existing audio ground. 3 White COMM L: Phone communication: Left. 4 Blue COMM R: Phone communication: Right. Note: For stereo operation, connect the left and right channels to the PTT segment of a headset microphone plug. Note: The wires connecting pins 3 and 4 and pins 5 and 6 are detailed in the table below: Pin number Color Purpose 1 Red V+IN: Headset power (10-32 VDC). Details on radio...
Owner's guide
Page 38
... included in your headset using the following procedures: 1. English Limited warranty service To return your product or contact Bose for repair Return your country; Service and Warranty Information Locating the headset serial number Your Bose® A20® Aviation Headset is identified by pressing down firmly. Label and ship the product, freight prepaid, to properly reseat the headband cushion by a unique headset serial number located on replacing the headband cushion, see Refer to Bose for technical support.
... included in your headset using the following procedures: 1. English Limited warranty service To return your product or contact Bose for repair Return your country; Service and Warranty Information Locating the headset serial number Your Bose® A20® Aviation Headset is identified by pressing down firmly. Label and ship the product, freight prepaid, to properly reseat the headband cushion by a unique headset serial number located on replacing the headband cushion, see Refer to Bose for technical support.
Owner's guide
Page 39
... access cover • 6-pin connector to dual G/A plug cable adapter • 6-pin connector to U174 plug cable adapter • Service kit (includes ear cushion kit, microphone windscreen, and headband cushion kit) • Aircraft panel connector installation kit • Aircraft panel installation kit cover plate English - 39 Service and Warranty Information Contact information Contact Bose for: • Spare parts and accessories • Technical advice • Installation information • Warranty and repair information In North America: Bose Technical Support 145...
... access cover • 6-pin connector to dual G/A plug cable adapter • 6-pin connector to U174 plug cable adapter • Service kit (includes ear cushion kit, microphone windscreen, and headband cushion kit) • Aircraft panel connector installation kit • Aircraft panel installation kit cover plate English - 39 Service and Warranty Information Contact information Contact Bose for: • Spare parts and accessories • Technical advice • Installation information • Warranty and repair information In North America: Bose Technical Support 145...