Bose RoomMate II User Manual
Bose® Aviation Headset Series II
Owner's Guide
Operational Advisories
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”.
Note:
This failure could prevent continued use of the headset in the “on”
position.
These loud tones and the related loss of communications 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.
®
The Bose
with limits for a class B digital device, pursuant to part 15 of the FCC rules.
These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to
• Consult the dealer or an experienced radio/television technician for
This apparatus does not exceed the class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations
of the Canadian Department of Communications. It also complies with
Canadian ICES-003 Class B.
Aviation Headset Series II has been tested and found to comply
which the receiver is connected.
help.
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Operational Advisories
This headset meets or exceeds all requirements of EN352-4, 1996
(European Standard-Hearing Protectors-Safety Requirements and
Testing-Part 4: Level-Dependent Ear Muffs).
• The wearer should ensure that:
i. The ear muffs are fitted, adjusted, and maintained in
accordance with the manufacturer’s instructions.
ii. The ear muffs are worn at all times in noisy surroundings.
iii. The ear muffs are regularly inspected for serviceability.
WARNING:
protection afforded by the ear muffs will be severely impaired.
• This product may be adversely affected by certain chemical substances. Further information can be sought from the manufacturer.
• Ear muffs, and in particular cushions, may deteriorate with use and
should be examined at frequent intervals for cracking and punctures, for example.
EN352-4 also calls for HML Criterion Levels and other data to be
provided to describe the hearing protection performance of leveldependent devices. At present, no standard has been drafted or
accepted defining how to measure the hearing protection provided by
active noise cancelling headphones. In the absence of an accepted
method, Bose
sured by an accredited U.S. testing laboratory using a combination of
real head methods. Based on this information, the Bose Aviation
Headset Series II provides sufficient hearing protection in any noise up
to 108 dB(A) in sound pressure level. For more information on the
methods used and the results obtained, please contact the Bose
Aviation Headset Service Department (page 23).
This headset complies with RTCA/DO-214 Audio Systems Characteristics and Minimum Operational Performance Standards for Aircraft
Audio Systems and Equipment:
• Transient RF Susceptibility per RTCA/DO-214 ¶ 2.5.11.1 and RTCA/
DO-160C ¶ 20.0, Category T.
• Sustained RF Susceptibility per RTCA/DO-214 ¶ 2.5.11.2 and
RTCA/DO-160C ¶ 20.0, Category T.
If the above recommendations are not adhered to, the
®
Corporation has had the product’s attenuation mea-
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Operational Advisories
Declaration of Conformity
®
Corporation, The Mountain, Framingham, MA 01701-9168 USA
Bose
acknowledge our sole responsibility, that the product:
Kind of equipment: Headset
Type designation: Bose Aviation Headset Series II
in accordance with EMC Directive 89/336/EEC and Article 10(1) of the Directive,
is in compliance with the following norms:
Technical regulations:
Electromagnetic Compatibility Emissions EN55011, EN55013, EN55022
Electromagnetic Compatibility Susceptibility EN50082-1, EN55020
We, the offerer:
14 March 1997
Bose B.V.
Nijverheidstraat 8,1135 GE Edam
The Netherlands
4
Accredited by Bose Corporation
Anton Schalkamp
General Manager, Bose Europe
Manufacturer’s authorized EU representative
Contents
Operational Advisories ............................................................ 2
Introduction ............................................................................. 6
Description ....................................................................... 6
Warranty card................................................................... 6
Using the Bose® Aviation Headset ........................................... 7
For proper headset fit....................................................... 7
Interconnect plug ............................................................. 8
Microphone placement .................................................... 8
Adjusting the volume........................................................ 9
Fail-resistant operation..................................................... 9
Microphone boom relocation ......................................... 10
Headset cable relocation................................................ 11
Powering the headset .................................................... 12
Portable battery pack .............................................. 12
Installed connector .................................................. 15
Installed DC power connector ................................. 17
Care and Maintenance .......................................................... 18
Cleaning instructions...................................................... 18
TM
Clear Comfort
and maintenance............................................................ 18
In Case of Difficulty ............................................................... 20
Technical Information ............................................................ 21
Service and Warranty Information ......................................... 23
cushion replacement
5
Introduction
Description
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 Comfort
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.
ATTENTION: With the headset’s combination of both active and
passive attenuation, typical aircraft sounds (for example, those from
engines, propellers, warning alarms, and other sound sources) may
sound different to you.
We strongly recommend that you ensure you can hear and recognize these sounds while you are using the Bose aviation headset
while operating any aircraft.
In addition, should you choose to listen to in-flight entertainment
through a Bose headset while piloting, we remind you to limit the
volume to safe levels so that it does not interfere with your ability to
hear informational sounds, such as those emitted by warning
alarms.
TM
cushions require only
Warranty card
1. Remove the headband cushion by pulling it away from the hook and
loop fastener.
2. Copy the serial number from the white label onto the warranty card.
3. Complete the warranty card and mail it to Bose.
6
Figure 1
Adjusting the headset
Using the Bose® Aviation Headset
For proper headset fit
Note:
The headset must be worn with the Bose logo (located on the
earcups) facing forward.
To achieve comfort and good performance, adjust both sides of the
headband equally to provide a comfortable fit. To achieve a good seal,
lightly grasp both earcups and position them so that your ears are
completely inside the Clear Comfort
TM
cushions.
Note:
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.
7
Using the Bose® Aviation Headset
Interconnect plug
The headset interconnect 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 plug into the adapter cable. To insert the interconnect plug into
the aircraft control panel, the same procedure would be used.
To insert: rotate the plug until the keyway is aligned; then insert until it
locks in place.
Figure 2
Inserting the headset
interconnect plug into
the keyway
To remove: gently pull back on the sleeve of the connector. This
automatically unlocks the plug from the socket.
Figure 3
Pulling back on the
sleeve to remove the
interconnect plug
Figure 4
Placing the microphone
8
Microphone placement
For good communication clarity and noise rejection, locate the microphone housing so that it just brushes your lips.
Figure 5
Adjusting the volume
Using the Bose® Aviation Headset
Adjusting the volume
The volume for your headset is controlled by the grooved knobs
located on the front side of the headband arms.
Avoid setting your volume controls at high levels that may affect your
hearing during extended periods of headset use.
Note:
The volume controls and the active noise reducing circuitry
work only when the headset is turned on (Figure 6).
Note:
The volume cannot be turned off completely.
Figure 6
Turning the headset
ON/OFF
ON
OFF
VOLUME
Fail-resistant operation
The headset provides communication and the earcups block some
noise even with the power switch on your headset turned off, bypassing all active noise reducing electronics. Turn the headset off if you
suspect there may be a problem; for more information, refer to “In Case
of Difficulty” (page 20).
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