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.

2

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-

3

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).

9

Using the Bose® Aviation Headset

Microphone boom relocation

To suit your flying preference, the headset boom can easily be moved
from one earcup to the other.

1. Unscrew the retaining knob on the boom mic mount.

2. Unplug the mic cable from the headband arm.

Figure 7

Unplugging the mic
cable

Figure 8

Relocating the mic
boom

10

3. Find the crescent-shaped flanges on the top and bottom of the
boom’s attachment clip (Figure 8). The clip fits snugly on the earcup
when the flanges face the earcup’s outer side. Make sure the arc of
the boom curves in front of the headset. Attach the clip to the
headset by tightening the attachment knob until the clip is secure.

Note:

The view shown is for the left earcup. To install on the right

earcup, turn the clip-and-boom assembly over.

Using the Bose® Aviation Headset

4. Plug the mic cable into the headband arm.

You may want to use the adjustment screw to tighten the tension of the
clip on the boom mic. The adjustment screw is on the flat end of the
clip. Use a 3⁄32 in. hex wrench to tighten it. Do not over-tighten.

Experience in using the headset helps establish your sense of how it
should sound. If you notice a problem, refer to “In Case of Difficulty”
(page 20). If problems persist, contact the Bose Aviation Headset
Service Department to arrange for service (page 23).

Headset cable relocation

1

3

2

4

11

Using the Bose® Aviation Headset

Powering the headset

The Bose Aviation Headset Series II may be powered in one of two
ways: a portable battery pack, or a connector installed into the
aircraft’s instrument panel.

Portable battery pack

The portable battery pack is available in two versions: NICAD
rechargeable and alkaline.

The NICAD rechargeable battery pack:

• Operates for 12-16 hours

• Recharges in 90 minutes (maximum)

CAUTION

BC-QC120 for 120V or BC-QC230 for 230V). Using the wrong charger
may damage your charger or battery pack.

The alkaline battery pack:

• Operates for approximately 40 hours

• Holds 6 AA alkaline batteries

:

Be sure to use the correct charger (Bose model numbers

12

1

Charging the NICAD battery pack

2

Click

Click

Note:

light on the charger. The battery will not be damaged if left connected
to the charger.

Completion of the charging cycle is indicated by the flashing

Using the Bose® Aviation Headset

Inserting batteries into the alkaline battery pack

1

3

2

4

Spin the batteries once with thumb to
seat them securely.

65

13

Using the Bose® Aviation Headset

7

9

8

10

11

14

12

Click

Click

Using the Bose® Aviation Headset

Installed connector

An optional installed connector is available for pilots who want to hardwire the
DC power, incoming audio, and outgoing microphone functions permanently
into their plane. The panel mount receptacle comes wired with a 6 foot harness
to simplify the installation process. To order this connector, contact the Bose
Aviation Headset Service Department (page 23).

The Bose
quick connector. A mechanical keying system ensures greater ease in mating.

Installing the wire harness

Note:

of avionics installation for the aircraft in which the installed connector will be used.

A .5 in. x .56 in. (1.27 cm x 1.42 cm) cutout is required to mount the connector as
shown in Figure 9. There are 6 wires to connect: 2 for microphone, 2 for audio, 1
for power, and 1 for ground. The audio and microphone wires should be con­nected to the back of the existing microphone and phone jacks. This leaves the
existing jacks intact for use with conventional headsets and is usually the fastest
installation method.

The pinout for the optional installed connector is as follows:

Pin Wire Description

1 Red Headset power (7-32 Volts DC). Use a .5 amp fuse or circuit

2 Black System ground. Connect to the existing audio ground.
3 White Phone communication-left.
4 Black Phone communication-right.
5 White Mic/Hi-audio. Connect to the existing portion of the mic jack

6 White/Blue Mic/Lo-ground. Connect to the existing portion of the mic

Aviation Headset Series II uses a self-latching, precision designed

This installation must be done by mechanics qualified to perform this type

breaker.

that corresponds to the ring position of a headset micro­phone plug. Do not connect to the tip (PTT) segment.

jack that corresponds to the barrel position of a headset
microphone plug.

Notes:

1. If used with a stereo intercom, connect the left and right channels to their
respective positions. For mono operation, connect Pins 3 & 4 together to the
tip portion of the existing phone jack.

2. Do not bend or use excessive force on the installed connector. Doing so may
damage or break the internal solder joints.

3. If the boom mic works on radio transmit but not through the intercom, check
Pin 6. It is probably miswired to the PTT segment of the mic jack.

4. The wire connecting Pins 3 & 4 and 5 & 6 are shielded, twisted pair with a
shield termination exiting with a black wire for each pair. Connect shields to
existing audio wiring shields, or audio ground if the existing wiring is not
shielded.

15

Using the Bose® Aviation Headset

5. Approved adhesives for use with this connector are Ciba-Geigy Uralane 5754­A/B, Lord 710, or VTCS-6 Vibratite. Do not let any cyanoacrylate-based
adhesives (e.g., Loctite), flux remover, or other caustic compounds come into
contact with the installed connector body. These chemicals will cause
deterioration and/or irreparable damage to the connector. For information on
chemical compatibility and connector part number, contact LEMO USA, Santa
Rosa, CA

at 1-800-444-5366.

Figure 9

Connector technical
information

PANEL HOLE REQUIRED

12.6mm

.5"

14.1mm

.56"

RECEPTACLE - PINOUT (FRONT VIEW)

PIN 1

PIN 6

AIRCRAFT INTERFACE SCHEMATIC

RED

BLK

WHT

BLK

WHT

WH/BLU

BLK

BLK

•

•

•

•

•

•

1 V+IN

2 GND

3 COMM L

4 COMM R

5 MIC HI

6 MIC LO

16

Using the Bose® Aviation Headset

Installed DC power connector

An optional installed connector is available for pilots who want to use
their plane’s DC power, instead of the battery pack, with the portable
adapter cable. The connector’s small size allows it to be installed in a
convenient location in the control panel, for example, near the head­phone and mic jacks.

Installing the DC power connector

Note:

perform this type of avionics installation for the aircraft in which the
installed connector will be used.

This installation must be done by mechanics qualified to

1. Install the wires from the DC power connector into the plane.
The pinout for the connector is as follows:

Pin Wire Description

1 Red Headset power (7-32 Volts DC). Use a .5 amp fuse or

circuit breaker.

2 Black System ground. Connect to the existing audio ground.

2. Plug the headset adapter power plug into the connector.

Figure 10

Inserting headset plug
into the connector

Figure 11

Location of headphone
and microphone
receptacles in a typical
plane’s control panel

3. Insert the headphone and microphone plugs into their receptacles

in the aircraft’s control panel.

17

Care and Maintenance

Cleaning instructions

Clean the headset exterior and cushions by wiping them with a moist
cloth. Mild soap may be used.

CAUTION:

The headband cover is made from leather and sheepskin. If it becomes
soiled, it may be removed and cleaned using mild soap. To remove the
headband cover, peel apart the hook and loop fastener along the flap.

Clear ComfortTM cushion replacement and
maintenance

To maintain good noise reduction, the Clear Comfort cushions in the
headset should be replaced periodically; annual replacement is
recommended. As the cushions wear, the silicone gel rings may spread
apart, causing uneven thicknesses and gaps in coverage. This can
lead to air leaks that result in reduced noise attenuation. Popping or
fluttering sounds are also common when wearing worn cushions. If the
gel leaks, replace the cushion. Frequent flying may require replacement
more often.

To order a replacement cushion kit, call the Bose
Service Department (page 23). Before ordering, remove the cushions
and inspect the foam liners in the earcups. If you note significant
deterioration, order foam liner replacements also.

Do not immerse the headset in water.

®

Aviation Headset

Figure 12

Unsnapping the trim ring
from the earcup

18

To remove the cushion and foam liner

Note:

Do not use a hard object such as a screwdriver, which can mar

the earcup.

1. Unsnap the trim ring on one earcup by gently prying the edge loose
with your fingers.

Once the trim ring has popped loose, work your way around the
earcups until the trim ring is completely free.

2. Lift out the old cushion. If you will be installing a new foam liner,
proceed to the next section. Otherwise, skip to “To replace the
cushion” (page 19).

Figure 13

Placing the new cushion
onto the earcup

Care and Maintenance

To install a new foam liner

Note:

The left and right foam liners are different.

1. Lift the old foam liner out of the earcup.

2. Place the new foam liner in the earcup.

With the correct foam liner in place, nesting along the walls of the cavity,
its half-moon shaped opening should cover the microphone, and the
small opening in the foam liner should fit over the small hole.

To clean the cushion

Using a baby wipe or a cloth moistened with isopropyl alcohol, gently
wipe the side of the cushion that touches the ear. Let the cushion air dry.

To replace the cushion

1. Place the holes in the new cushion onto the posts on the earcup.

Figure 14

Alignment of earcup,
foam liner, cushion, and
trim ring

2. Align the cushion/trim ring, with its flat edge forward, to the earcup.

Note:

If both old cushions have been removed, note that there are left

and right trim rings. The left ring

3. Snap the trim ring down firmly along its entire circumference.

Note:

Make sure that the trim ring is not grabbing or pinching the side

will not

fit on the right earcup.

of the cushion at any spot. If it is, remove the trim ring and reattach the
cushion, being sure the cushion skin is not pinched.

4. Replace the foam liner and cushion on the other earcup in the same
manner.

19

In Case of Difficulty

Problem What to do

Communication but no
active noise reduction in
both ears.

Active noise reduction
but no (or very low
volume) communication
in both ears.

Reduced active noise
reduction, intermittent
clicking sounds, or
communication distortion
in a loud environment.

Low rumbling sound with
the headset turned on in
a quiet environment.

Popping sound audible
with headset turned on
in a loud environment.

Squealing, whistling, or
chirping sound when the
system is turned on.

• Make sure that your headset is powered, and that the power switch is “ON.”

• If using DC power from the aircraft, check the aircraft fuse or breaker.

• If using the NICAD battery pack, verify that it is charged.

• If using the alkaline battery pack, verify that:
– batteries are installed with the correct polarity. The negative terminal of

each battery attaches to the springs in the battery holder (refer to step 4
on page 13).

– batteries are fully seated and in contact with the top and bottom contacts

of the battery holder. If necessary, spin the installed batteries once with

your thumbs to fully seat them (refer to step 5 on page 13).
– batteries are fresh.
– the headset plug is fully seated in battery pack (refer to step 11 on page 14).

Check to see if the volume controls are turned too low (rotate up to increase
the volume).

Check the holes at the bottom of each earcup to make sure they are not blocked.
If dust or dirt has built up here, carefully use a small wire or the end of a bent
paper clip to unclog the hole. You may need to remove the microphone to clean
the holes.

• Adjust the earcup fit to create a better seal to your head. Be sure that a hat
or eyeglasses do not interfere with the seal.

• Inspect the seal between the cushion and the earcup. The cushion should
sit on the earcup evenly, without gaps.

• Check the holes at the bottom of each earcup to make sure they are not
blocked. If dust or dirt has built up here, carefully use a small wire or the end
of a paper clip to unclog the hole.
to clean the holes.

• Adjust the earcup fit to eliminate the sound.

• Inspect the seal between the cushion and the earcup. The cushion should
sit on the earcup evenly, without gaps.

Check to see if the ear cavity foam liner is missing or severely damaged. If so,
refer to “Care and Maintenance” (page 18).

Do not attempt to disassemble or service the inside of the earcups or other parts
of the headset. Only the microphone boom assembly, Clear Comfort
trim rings, foam liners, headband cover, and foam pad are designed for replace­ment by the user. For instructions on how to care for your headset and how to
replace the cushions, refer to “Care and Maintenance” (page 18). If problems
persist, contact the Bose® Aviation Headset Service Department (page 23).

You may need to remove the microphone

TM

cushions,

20

Technical Information

Sound pressure levels (SPL) are relative to 20 micro Pascal.

Earphones

Damage could occur to avionics equipment if it was manufactured for
use only with 600Ω (ohm) headsets. If in doubt, consult the avionics
equipment manufacturer.

Impedance

In mono mode: 480Ω (on) and 190Ω (off) at 1kHz.
In stereo mode: left, 500Ω (on), 190Ω (off); right, 2000Ω (on), 190Ω (off).

Frequency response

20Hz - 15kHz
Sensitivity
90dB SPL measured at 1mW, 1kHz, full volume on flat plate coupler

Microphone

Bias Required:

8 to 16VDC through 220Ω to 2200Ω

Sensitivity:

Depends upon bias and radio AC input impedance. Typical output is
300mV at 114dBSPL. To assure proper modulation of your radio, it is
recommended that you have your avionics technician adjust its input to
match the output of your headset’s microphone.

Active noise reduction

Active Noise Reduction Bandwidth:

30Hz - 700Hz

Noise floor

28dBA SPL (typical)

Maximum ambient noise level

Approximately 118dB SPL at full cancellation

Voltage

7-32VDC

Current

60mA typical, 120mA maximum operating

Fuse/breaker recommended

1

/2 amp fast blow (AGC 1/2 fuse)

21

Technical Information

Headset Weight

22 oz. (567 grams)

Temperature and Altitude (Category A1)

Operating Temperature:

+5° to +131° F (-15° to +55° C)

Storage Temperature:

-67° to +158° F (-55° to +70° C)

Altitude:

15,000 ft. maximum pressure altitude for full cancellation

The Bose® Aviation Headset Series II headset, adapter cables, battery
packs, and boom microphone are FAA approved to TSO c-57a and c-58a.

The Bose Aviation Headset Series II has been designed to function in
or withstand exposure to the following environmental conditions.
Environmental categories cited refer to RTCA/DO-160C, 4 Dec 1989
and DO-214, 4 Mar 1993.

Condition Category

AF Conducted Susceptibility B
Humidity B
Magnetic Effect Z
Power Input B
RF Susceptibility T
Vibration P&S
Voltage Spike A
Shock drop...12 times, 1 meter onto

concrete

22

Service and Warranty Information

Service

Bose® Aviation Headset Service Department
145 Pennsylvania Avenue
Framingham, MA 01701-9168 U.S.A.

TEL: [phone] (U.S.)

1-508-879-7330, ext. 62006 (outside U.S.)

FAX: [phone]
Contact the Bose Aviation Headset Service Department for:

• accessories.

• technical advice.

• installation information.

• warranty and repair information.

If your headset must be returned for service:

1. Request a return authorization number from the Bose Aviation
Headset Service Department (see above).

2. Securely pack the headset, enclosing your name, address, daytime
telephone number, and a description of the problem.

3. Clearly mark the outside of the package with your return authoriza­tion number, insure your headset, and send it to the address above.

Warranty period

Limited Two-Year Warranty: Bose Corporation (Bose) warrants this
product to be free from defects in material and workmanship for a
period of two years from the date of purchase. The ear cushions are
not included in this warranty; annual replacement of cushions is
recommended. See “Care and Maintenance” (page 18).

23

Service and Warranty Information

Limited warranty Bose® product

What is covered

All parts defective in material or workmanship.

For how long

At least one year from the purchase date, or longer if specified in your owner’s manual,
but not longer than five years from the purchase date.

What we will do

We will, at our sole option, repair or replace any defective parts free of charge.

What we will not do

Pay shipping or transportation charges from you to us.

What you must do

1. Return product personally with proof of purchase from an authorized Bose dealer to
your authorized Bose dealer, or

2. Return product personally with proof of purchase from an authorized Bose dealer to
the nearest Bose Service Agency, or

3. Return product personally with proof of purchase from an authorized Bose dealer
directly to the Bose organization in your country. If you elect to return the product
directly to a Bose organization,

A. Contact the Bose organization in your country for specific return and shipping

instructions;

B. Properly pack the product in the original carton for shipping. If you need a new

carton, contact the Bose organization in your country for a new carton available
at a nominal charge;

C. Label and ship, freight prepaid, to the address provided by the Bose organization

in your country, and

D. Place any necessary return authorization number prominently on the outside of

the carton. (Cartons not bearing a return authorization number, where required,
will be refused.)

Other conditions

This warranty is fully transferable provided the current owner furnishes the original proof
of purchase from an authorized Bose dealer. THE PROVISIONS OF THIS WARRANTY
ARE IN LIEU OF ANY OTHER WARRANTY, WHETHER EXPRESS OR IMPLIED, WRITTEN
OR ORAL, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. BOSE’S MAXIMUM LIABILITY SHALL NOT EXCEED THE
ACTUAL PURCHASE PRICE PAID BY YOU FOR THE PRODUCT. IN NO EVENT SHALL
BOSE BE LIABLE FOR SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR INDIRECT
DAMAGES. This warranty does not cover a defect that has resulted from improper or
unreasonable use or maintenance, accident, improper packing, or unauthorized tamper­ing, alteration, or modification as determined solely by us. This warranty is void if the label

bearing the serial number has been removed or defaced.

24

Other law rights

This warranty gives you specific legal rights, and you may also have other rights which
vary from state to state or country to country. Some places do not allow limitations on
implied warranties or the exclusion or limitation of incidental or consequential damages,
so the above limitations or exclusions may not apply to you.

Notes

25

Notes

26

27

The Mountain, Framingham, MA 01701-9168 USA

JN97884 PN183953 Rev. 01 AM183953 Rev. 01

© 1997 Bose Corporation