Bose Aviation Headset X E User Manual

 
11 
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...

 
12 
Getting Your Headset Ready for Use 
Figure 7 
Positioning the mic cable 
assembly on the preferred 
earcup 
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 near your 
mouth when you put on the headset. The label should be facing...

 
13 
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 
Optional operation switches 
inside the battery compart-
ment 
Changing the optional operation switches 
Note:  
To change switch positions, use a pen or a small, flat-tipped...

 
14 
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 inad-
vertent reverse polarity from installing the batteries incorrectly. If the 
batteries 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...

 
15 
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 
Attaching and removing the 
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 ground
•Two for audio shields
Audio and...

 
16
Getting Your Headset Ready for Use
Details on making the connections
The pinout for the optional installed connector is:
1Red Headset power (10-32 VDC). Use a 
1/4-amp 
fuse or a 1/2-amp circuit breaker. 
2Black System ground. Connect to the existing 
audio ground.
3White Phone communication–Left.
4Black Phone communication–Right.
5White 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. Do not connect...

17
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...

18
Getting Your Headset Ready for Use
Mono, stereo, and helicopter connection diagrams
Figure 13
Diagram of connections for 
a mono signal
Figure 14
Diagram of connections to 
aircraft stereo jacks
Figure 15
Diagram of connections to 
a helicopter single jack
1 V+IN
BLK
WHT
BLK
WHT
WHT/BLU2 GND
3 COMM L
4 COMM R
5 MIC HI
6 MIC LO RED.5 10-32
V DC
Ring
(audio)
Microphone - Jack
Existing PTT
switch
and wiring
(no connection to
Bose
® headset) Barrel
(gnd) TPP
(PTT)
Headphone - Jack
Barrel
(audio gnd) Tip...

19
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). 
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 headband so it...

20
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).
Figure 17
Properly placing the micro-
phone, (a) wide side nearly 
touching your mouth, not 
(b) farther away or (c) tilted 
2. Pull the microphone in toward your lips. Position the microphone 
with its label side facing in....