Bose Aviation Headset Series II User Manual
As with any complex electronic device, it is possible for this headset to experience a failure during operation. Such a failure may include loud tones, distortion, and loss of communications signal in the headset when used in the active or “on” position. The system is “on” when the rocker switch is “up”.
This failure could prevent continued use of the headset in the “on” position. These loud tones and the related loss of communication can be eliminated for the duration of the flight simply by switching the headset off. (The system is off when the rocker switch is “down.”) With the switch off, the headset continues to function in the passive mode, maintaining full communication capabilities. We strongly recommend that as a responsible pilot, you ensure you can hear and recognize typical aircraft sounds while you are using the headset.
Limit the volume of your headset to safe levels so it does not interfere with your ability to hear informational sounds, such as those emitted by warning alarms; i.e., stall warning, gear up. Avoid setting the volume controls at high levels that may affect your hearing during extended periods of headset use.
Congratulations on your purchase of the Bose® Aviation Headset Series II. This headset uses an advanced combination of electro-acoustical noise reduction circuitry and a patented cushioning system to significantly reduce aircraft noise. It actively reduces noise elements in addition to muffling noise. The patented Clear ComfortTM cushions require only slight pressure to provide high passive noise attenuation. As a result, this headset can be worn comfortably for extended periods. The headset may be powered in one of two ways: a portable battery pack, or a connector installed into your aircraft.
- Remove the headband cushion by pulling it away from the hook and loop fastener.
- Copy the serial number from the white label onto the warranty card.
- Complete the warranty card and mail it to Bose.
For proper headset fit
The headset must be worn with the Bose logo (located on the earcups) facing forward.
If you hear a hiss or a low rumbling sound, this may indicate an improper fit. Extending the headband slightly should correct this
condition. Wearing glasses with thick temples or a hat may interfere with the fit and cause a problem. Final adjustment is best accomplished in a noisy environment with the headset system turned on. Then, reposition both earcups until the headset seems quietest.
The headset interconnects plug connects the headset cable to a power source. The power source can be an installed connector in the aircraft’s control panel or an adapter cable connected to a portable battery pack. The interconnect plug is designed for quick connection and removal. To ensure correct pin alignment, the plug has a keyway.
Note: The illustrations below show the insertion of the headset interconnect plugs into the adapter cable.. To insert: rotate the plug until the keyway is aligned; then insert until it locks in place. To remove: gently pull back on the sleeve of the connector. This automatically unlocks the plug from the socket.
To remove: gently pull back on the sleeve of the connector. This automatically unlocks the plug from the socket
Microphone boom relocation
To suit your flying preference, the headset boom can easily be moved from one earcup to the other.
- Unscrew the retaining knob on the boom mic mount.
- Unplug the mic cable from the headband arm.
- Find the crescent-shaped flanges on the top and bottom of the boom’s attachment clip. The clip fits snugly on the earcup when the flanges face the earcup’s outer side. Make sure the arc of the boom curves in front of the headset.
- Plug the mic cable into the headband arm. You may want to use the adjustment screw to tighten the tension of the clip on the boom mic. The adjustment screw is on the flat end of the clip. Use a 3⁄32 in. hex wrench to tighten it. Do not over-tighten.
Experience in using the headset helps establish your sense of how it should sound. If problems persist, contact the Bose Aviation Headset Service Department to arrange for service.
Headset cable relocation
Powering the headset
The Bose Aviation Headset Series II may be powered in one of two ways: a portable battery pack, or a connector installed into the aircraft’s instrument panel.
An optionally installed connector is available for pilots who want to hardwire the DC power, incoming audio, and outgoing microphone functions permanently into their plane. The panel mount receptacle comes wired with a 6-foot harness to simplify the installation process. To order this connector, contact the Bose Aviation Headset Service Department. The Bose Aviation Headset Series II uses a self-latching, precision-designed quick connector. A mechanical keying system ensures greater ease in mating.
Installing the wire harness
This installation must be done by mechanics qualified to perform this type of avionics installation for the aircraft in which the installed connector will be used. A .5 in. x .56 in. (1.27 cm x 1.42 cm) cutout is required to mount. There are 6 wires to connect: 2 for microphone, 2 for audio, 1 for power, and 1 for ground. The audio and microphone wires should be connected to the back of the existing microphone and phone jacks. This leaves the existing jacks intact for use with conventional headsets and is usually the fastest installation method. The pinout for the optionally installed connector is as follows:
Installed DC power connector
An optionally installed connector is available for pilots who want to use their plane’s DC power, instead of the battery pack, with the portable adapter cable. The connector’s small size allows it to be installed in a convenient location in the control panel, for example, near the headphone and mic jacks.
Installing the DC power connector
Note: This installation must be done by mechanics qualified to perform this type of avionics installation for the aircraft in which the installed connector will be used.
- Install the wires from the DC power connector into the plane.
- Plug the headset adapter power plug into the connector.
- Insert the headphone and microphone plugs into their receptacles in the aircraft’s control panel.
This warranty is fully transferable provided the current owner furnishes the original proof of purchase from an authorized Bose dealer. BOSE’S MAXIMUM LIABILITY SHALL NOT EXCEED THE ACTUAL PURCHASE PRICE PAID BY YOU FOR THE PRODUCT. IN NO EVENT SHALL BOSE BE LIABLE FOR SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR INDIRECT DAMAGES.
This warranty does not cover a defect that has resulted from improper or unreasonable use or maintenance, accident, improper packing, or unauthorized tampering, alteration, or modification as determined solely by us. This warranty is void if the label bearing the serial number has been removed or defaced.
Other law rights
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state or country to country. Some places do not allow limitations on implied warranties or the exclusion or limitation of incidental or consequential damages, so the above limitations or exclusions may not apply to you.