Bose Aviation Headset X E User Manual

31
Troubleshooting
Stereo missing or communi-
cations in one ear only•If your aircraft has a mono audio system, verify that the stereo/
mono configuration switch is set to mono. See “Changing the 
optional operation switches” on page 13. If the switch is set to 
stereo, and the headset is plugged into a mono audio system, 
you will hear only through the left earcup.
Squealing, whistling, or 
chirping sound when the 
system is turned on•Check to see if the protective inner screen is damaged.
Low rumbling...

32
Technical Information
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.
ImpedanceMonaural mode: 160 ohms (ON) and 230 
ohms (OFF) at 1 kHz
Stereo mode: 320 ohms (ON), 460 ohms (OFF)
Frequency 
response15 Hz to 15 kHz
Sensitivity: 90 dB SPL typical, measured at 
1 mw, 1 kHz, full volume on KEMAR ear 
simulator
Microphone...

33
Technical Information
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:
Environmental categories cited refer to RTCA/DO-160D, 
July 29, 1997 and DO-214, March 4, 1993.Headset weight12 ounces (340 grams) on the head when 
cable is supported by the mounting clip
Headset size 
rangeBreadth:...

34
Service & Warranty Information
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 limited warranty against manu-
facturer’s defects.
Service
Contact Bose for:
•Spare parts and accessories (see page 35)
•Technical advice
•Installation information
•Warranty and repair information
To return your...

35
Service & Warranty Information
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 customer-replaceable components 
may be purchased directly from Bose. Refer to contact information 
on page 34.
•Additional control module cable
Specify: battery powered; or aircraft powered
•Ear cushions
•Carry bag...

©2003 Bose Corporation, The Mountain
Framingham, MA 01701-9168 USA
270261 AM Rev.00 JN31066