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5 C AUTIONS AND A DVISORIES 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, r...

6 C ONTENTS Cautions and Advisories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Operational advisory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Power source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

8 I NTRODUCTION 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 com...

9 I NTRODUCTION Figure 4 The (a) battery poweredand (b) aircraft powered versions of the headset (a) (b)

10 G ETTING Y OUR H EADSET R EADY FOR U SE 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 approp...

11 G ETTING Y OUR H EADSET R EADY FOR U SE 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 bas...

12 G ETTING Y OUR H EADSET R EADY FOR U SE Figure 7 Positioning the mic cable assembly on the preferred earcup Connector pins Access cover Cable assembly Connector pins L for left 4. Press the assembly onto the connector pins until it is fully engaged and the cable assembly is flush with the earcup....

13 G ETTING Y OUR H EADSET R EADY FOR U SE 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 defaul...

14 G ETTING Y OUR H EADSET R EADY FOR U SE 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 compar tment is designed to prevent inadvert- ent reverse polarity from installing...

15 G ETTING Y OUR H EADSET R EADY FOR U SE 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 Attaching and removing the cable Slide sleeve to release ...

16 G ETTING Y OUR H EADSET R EADY FOR U SE Details on making the connections The pinout for the optional installed connector is: 1 Red Headset power (10-32 VDC). Use a 1 / 4 -amp fuse or a 1 / 2 -amp circuit breaker. 2 Black System ground. Connect to the existing audio ground. 3 White Phone communic...

17 G ETTING Y OUR H EADSET R EADY FOR U SE 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 connecto...

18 G ETTING Y OUR H EADSET R EADY FOR U SE Mono, stereo, and helicopter connection diagrams Figure 13 Diagram of connections for a mono signal Ring and wiring Ti p (phone audio) p Figure 14 Diagram of connections to aircraft stereo jacks n Figure 15 Diagram of connections to a helicopter single jack

19 U SING Y OUR H EADSET 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). Figure 16 Matching the R and L m...

20 U SING Y OUR H EADSET 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). Figure 17 Proper...

21 U SING Y OUR H EADSET Power button Use the power button to turn the headset on or off, or to change the LED brightness (Figure 18). • Press the power button once to turn on ANR. • Press and hold the power button to turn off ANR. Or rely on the smart shutoff feature (descibed on page page 13). Not...

22 U SING Y OUR H EADSET Holding the control module upright and facing you: • Use the left knob to adjust volume in the left earcup. • Use the right knob to adjust volume in the right earcup. Controlling the volume of a single battery powered headset With ANR on: 1. Set the aircraft communication sy...

23 U SING Y OUR H EADSET An LED, located on the control module, changes color to indicate the power status, as follows: LED Color Type of light Indicates Green Blinking Power ON and batteries good Amber Fast blinking Power ON, but batteries low (8 hours or less remaining) Red Faster blinking Power O...

24 U SING Y OUR H EADSET CAUTION: Avoid setting the volume levels too high. Exposure to loud sounds may cause hearing damage. Notice the individual earcup controls Separate knobs on the control module control the volume for each separate earcup (Figure 19 on page 23). Holding the control module upri...

25 H EADSET C ARE AND M AINTENANCE Instructions for continued airworthiness Bose recommends following the general care and maintenance instructions in this guide. With normal use, items such as wind-screens and ear cushions may require periodic replacement. If cleaning or replacement of these items ...

26 H EADSET C ARE AND M AINTENANCE Ear cushions As a general rule, ear cushions should be replaced after 500 hours of use, depending on how often you fly. You may have to replace them more often, if you: • have a full beard or heavy whiskers • subject the headsets to severe temperature extremes such...

27 H EADSET C ARE AND M AINTENANCE Headband cushion 1. Remove the cushion as described in “Headband cushion replacement” on page 29. 2. Place the cushion in a solution of water and a mild detergent. 3. Allow the cushion to air dry, then, reattach. Removing environmental moisture If the protective in...

28 H EADSET C ARE AND M AINTENANCE 3. Properly position the replacement ear cushion against the earcup. 4. Tuck an edge of the ear cushion skirt into the slot behind the ear cushion flange. Be careful not to fold the skirt over. 5. Work the remainder of the skirt into the slot completely around the ...

29 H EADSET C ARE AND M AINTENANCE Battery door replacement 1. Slide the battery door down using the finger indent and lift open. 2. Gently rotate the cover sideways to remove from the control module. 3. Insert new door tab, being careful to insert between the metal spring and plastic housing. Headb...

30 T ROUBLESHOOTING In case of difficulty Look for the problem in the left column of the table, then follow the instructions on “What to do” in the right column. If the problem per-sists, contact the Bose ® Aviation Headset Department, using the contact information on page 34 of this guide, for assi...

32 T ECHNICAL I NFORMATION Sound pressure levels (SPL) are relative to 20 micropascals. Headphone Damage could occur to avionics equipment that is intended for use only with 600-ohm headsets. If in doubt, consult the avionics equipment manufacturer. Impedance Monaural mode: 160 ohms (ON) and 230 ohm...

33 T ECHNICAL I NFORMATION FAA Technical Standards Order The Bose ® Aviation Headset , including its interface, cables, and electret boom microphone, is FAA approved to TSO C-57a and C-58a. It has been designed to function in or withstand exposure to the following environmental conditions: Condition...

34 S ERVICE & W ARRANTY I NFORMATION Warranty period Limited 5-year warranty: Bose Corporation warrants this headset to be free from defects in materials and workmanship for a period of five years from the date of purchase. Ear cushion life will vary with use. Ear cushions carry a six-month limi...

35 S ERVICE & W ARRANTY I NFORMATION European Headquarters: Noise Reduction Technology Group Nijverheidstraat 8 NL-1135 GE Edam TEL:+31(0)299-390150 FAX:+31(0)299-390109 E-MAIL: [email protected] World Wide Web: www.bose.com Ordering parts and accessories The following accessories and cus...

AVIATION HEADSET ©2006 Bose Corporation, The Mountain, Framingham, MA 01701-9168 USA AM270261 Rev.01 Owner’s Guide