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AVIATION HEADSET
Owners Guide
©2006 Bose Corporation, The Mountain,
Framingham, MA 01701-9168 USA
AM270261 Rev.01
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DECLARATION OF CONFORMITY We, the offerer: Bose Corporation, The Mountain, Framingham, MA 01701-9168 USA Acknowledge our sole responsibility, that the product: ® Kind of equipment: Bose Aviation Headset Type Designation: AHX-32-0# and AHX-34-0# In accordance with EMC Directive 89/336/EEC and Article 10(1) of the Directive, is in compliance with the following norm(s) or documents(s) Technical regulations:EN55013, EN55020 Accredited by: Bose Corporation, The Mountain, Framingham, MA 01701-916
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CAUTIONS AND ADVISORIES Operational advisory ® The Bose Aviation Headset is an active noise reducing (ANR) headset. As with any complex electronic device, it is possible for this headset to fail during operation. Symptoms of failure may include loud tones, distortion, and loss of communications signal in the headset when used in the ANR mode. Note: The headset includes redundant circuitry to reduce the effects of such failures and allow for continued use of the headset in the ANR mode. I
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CAUTIONS AND ADVISORIES How use of the headset affects hearing safety The headset is intended for use with ANR turned on. Noise reduction and communications performance are reduced with ANR turned off. Volume control Make sure your aircraft communications system volume control is easily accessible. This control affects the strength of the communi- cations signal coming into the headset, whether ANR is on or off. As pilot in command, you must be sure you can understand critical communications
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CAUTIONS AND ADVISORIES Figure 2 ® TriPort headset openings TriPort headset openings Earcup inner screen The protective inner screen is critical to the headset’s ability to reduce noise (Figure 3). Figure 3 Protective inner screen inside the earcup Earcup inner screen Do not attempt to remove, replace, or repair this screen. If operating problems indicate the need for screen replacement, contact the ® Bose Aviation Headset Department. Refer to “Contact information” on page 34. If the
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CONTENTS Cautions and Advisories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Operational advisory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Power source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 How use of the headset affects hearing safety . . . . . . . . . . . . . . . . . . 4 Volume control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Listening
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CONTENTS Operating the aircraft powered headset . . . . . . . . . . . . . . . . . . . . . . . 23 Power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Volume control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Notice the individual earcup controls . . . . . . . . . . . . . . . . . . 24 Controlling the volume of a single aircraft powered headset 24 Volume control using multiple headsets . . . . . . . . . . . . . . .
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INTRODUCTION We appreciate your choice ® Congratulations on your purchase of a Bose Aviation Headset . ® This headset combines Bose Acoustic Noise Cancelling headset technology to electronically reduce unwanted aircraft noise, and ® Bose TriPort headset technology for a smaller, lighter, more comfortable headset that delivers full-spectrum noise reduction. We believe it is the finest aviation headset you can own. Headset and cable variations The Bose Aviation Headset is available in variat
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INTRODUCTION Figure 4 (a) The (a) battery powered and (b) aircraft powered versions of the headset (b) 9
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GETTING YOUR HEADSET READY FOR USE Locate the serial number for your product registration card ® The Bose Aviation Headset includes a product registration card in the carton. Please fill in the requested information and mail it to Bose. We will use this information to provide you with appropriate advisories and updates. Be sure to include your headset serial number, which is located on the underside of the magnesium headband, underneath the headband cushion. Figure 5 Headband cushion Loc
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GETTING YOUR HEADSET READY FOR USE note the important markings for left (L) and right (R) above each ear- cup. These markings indicate which ear each earcup is intended to fit over. Removing an attached boom microphone cable 1. Use a flat-tipped screwdriver to loosen the two screws at the base of the boom microphone cable assembly. 2. Pull the cable assembly straight out from the earcup to which it is attached (Figure 6). CAUTION: Do not twist the boom microphone cable while discon- necting i
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GETTING YOUR HEADSET READY FOR USE Figure 7 Positioning the mic cable assembly on the preferred earcup L for left Access cover Connector pins Connector Cable pins assembly 4. Press the assembly onto the connector pins until it is fully engaged and the cable assembly is flush with the earcup. CAUTION: Do not apply excessive force, which may result in earcup damage. 5. With the screw threads properly aligned, tighten the screws. 6. Rotate the microphone boom into position so it will be ne
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AUT GETTING YOUR HEADSET READY FOR USE Preparing to use battery power The battery compartment on your headset control model serves two purposes. In addition to holding the batteries, it contains small switches (Figure 9) that give you the option to change some of the factory-set operation defaults for your headset. Figure 9 ON C & K S006 Optional operation switches 1 2 34 56 inside the battery compart- ment Changing the optional operation switches Note: To change switch positions, use a pen
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GETTING YOUR HEADSET READY FOR USE Inserting batteries Insert the two supplied alkaline AA batteries (IEC LR6) into the control module (Figure 10). Figure 10 Installing the two batteries + CAUTION: The battery compartment is designed to prevent inadvert- ent reverse polarity from installing the batteries incorrectly. If the bat- teries do not seem to fit correctly, do not force them in. Forcing an improper connection will cause permanent damage to the control module. Preparing the aircraft p
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GETTING YOUR HEADSET READY FOR USE CAUTION: Do not attempt to pull the connector out without first pull- ing back on the sleeve. Forcing the connector out will cause damage to the cable and/or your aircraft instrument panel. Figure 11 Slide sleeve Align keyway Attaching and removing the to release cable Mounting the connector Mount the connector into a cutout, as shown in Figure 12 below. Connect the eight wires as follows: Two for the microphone Two for audio One for power One for gr
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GETTING YOUR HEADSET READY FOR USE Details on making the connections The pinout for the optional installed connector is: 1 1 Red Headset power (10-32 VDC). Use a / -amp 4 1 fuse or a / -amp circuit breaker. 2 2 Black System ground. Connect to the existing audio ground. 3 White Phone communication–Left. 4 Black Phone communication–Right. 5 White Microphone/Hi-audio. Connect to the por- tion of the existing microphone jack that corresponds to the ring position of a head- set microphone plug. D
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GETTING YOUR HEADSET READY FOR USE Notes For use with a stereo intercom, connect the left and right channels to their respective positions. For monaural operation, connect pins 3 & 4 together to the tip of the existing phone jack. Do not use excessive force or bend the installed connector. This may damage or break internal solder joints. If the boom microphone works on radio transmit but not through the intercom, check pin 6. It may be incorrectly wired to the PTT seg- ment of the microphone
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GETTING YOUR HEADSET READY FOR USE Mono, stereo, and helicopter connection diagrams Figure 13 Diagram of connections for a mono signal Ring and wiring Ti p p (phone audio) Figure 14 Diagram of connections to aircraft stereo jacks n Figure 15 Diagram of connections to a helicopter single jack 18
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USING YOUR HEADSET Wearing it properly Proper fit on your head is important both for comfort and good noise reduction performance. Here are a few guidelines: Use the left (L) and right (R) markings above the earcups to orient the headset properly (Figure 16). R L Figure 16 Matching the R and L markings to your right and left ears Use a light grasp to adjust each earcup so its cushion is com- pletely over your ear and you feel an even, gentle pressure all around it. Adjust the he
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USING YOUR HEADSET Microphone placement Proper microphone placement is important for clear communica- tions. With the headset on your head, make these adjustments: 1. Grasp the boom with your fingers and move the microphone up or down so it is level with your mouth (Figure 17). (a) Figure 17 (b) Mic is too far away Properly placing the micro- phone, (a) wide side nearly Mic label touching your mouth, not (b) farther away or (c) tilted (c) Mic label is not facing mouth 1 Mic is / inch 2 f
