Bowers and Wilkins DM-303 Owners manual

DM303

Owner’s Manual

and Warranty

Figure 1

Figure 2

Figure 3

Figure 4

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Contents

English

Limited Warranty...........1

Owner’s Manual............1

Français

Garantie limitée.............2

Manuel d’utilisation .......2

Deutsch

Beschränkte

Garantie .......................3

Bedienungsanleitung.....3

Español

Garantía limitada...........4

Manual de

instrucciones ................5

Português

Garantia limitada...........6

Manual do utilizador .....6

Italiano

Garanzia limitata ...........7

Manuale di istruzioni .....7

Nederlands

Beperkte garantie .........8

Handleiding ..................9

Ελληνικά

Περιορισµένη

εγγύηση....................10

Οδηγίες Χρήσεως ....10

"esky

Záruka .......................11

Návod k pouãití..........12

Polski

Gwarancja .................13

Instrukcja

uÃytkownika ...............13

Русский

Ограниченная

гарантия....................14

Руководство по

эксплуатации............14

Slovenska navodila

Omejena garancija ....15

Navodila za uporabo .16

Dansk

Begrænset garanti ......17

Brugsanvisning ...........17

Suomi

Takuuehdot.................18

Omistajan kasikirja ......18

Svenska

Begränsad garanti ......19

Bruksanvisning ...........19

.......................20

.....................20

.......................21

....................21

11

English

Limited Warranty

Dear customer,

Welcome to B&W.

This product has been designed and
manufactured to the highest quality
standards. However, if something does go
wrong with this product, B&W
Loudspeakers and its national distributors
warrant free of charge labour (exclusion
may apply) and replacement parts in any
country served by an official B&W
distributor.

This limited warranty is valid for a period of
five years from the date of purchase or two
years for electronics including amplified
loudspeakers.

Terms and Conditions

1 The warranty is limited to the repair of

the equipment. Neither transportation,
nor any other costs, nor any risk for
removal, transportation and installation
of products is covered by this warranty.

2 This warranty is only valid for the

original owner. It is not transferable.

3 This warranty will not be applicable in

cases other than defects in materials
and/or workmanship at the time of
purchase and will not be applicable:

a. for damages caused by incorrect

installation, connection or packing,

b. for damages caused by any use other

than correct use described in the user
manual, negligence, modifications, or
use of parts that are not made or
authorised by B&W,

c. for damages caused by faulty or

unsuitable ancillary equipment,

d. for damages caused by accidents,

lightning, water, fire heat, war, public
disturbances or any other cause
beyond the reasonable control of B&W
and its appointed distributors,

e. for products whose serial number has

been altered, deleted, removed or
made illegible,

f. if repairs or modifications have been

executed by an unauthorised person.

4 This guarantee complements any

national/regional law obligations of
dealers or national distributors and
does not affect your statutory rights as
a customer.

How to claim repairs under
warranty

Should service be required, please follow
the following procedure:

1 If the equipment is being used in the

country of purchase, you should
contact the B&W authorised dealer
from whom the equipment was
purchased.

2 If the equipment is being used outside

the country of purchase, you should
contact B&W national distributor in the
country of residence who will advise

where the equipment can be serviced.
You can call B&W in the UK or visit our
web site to get the contact details of
your local distributor.

To validate your warranty, you will need to
produce this warranty booklet completed
and stamped by your dealer on the date of
purchase. Alternatively, you will need the
original sales invoice or other proof of
ownership and date of purchase.

Owner’s manual

Introduction

Thank you for choosing B&W.

Please read this manual fully before
unpacking and installing the product. It will
help you to optimise its performance.

B&W maintains a network of dedicated
distributors in over 60 countries who will be
able to help you should you have any
problems your dealer cannot resolve.

Unpacking (figure 1)

• Fold the carton flaps right back and
invert the carton and contents.

• Lift the carton clear of the contents.

• Remove the inner packing from the
product.

We suggest you retain the packing for
future use.

Positioning (figures 2 & 3)

Mount the speakers on firm dedicated
stands that place the tweeters
approximately at ear level. Bookshelf
mounting is possible but allows less
opportunity for optimising the sound. The
stand or shelf used can affect the sound
quality of the speaker. Ask your dealer for
advice on the best type for your needs.

As an initial guide (figure 2):

• Position the speakers and the centre of
the listening area approximately at the
corners of an equilateral triangle.

• Keep the speakers at least 1.5m apart
to maintain left-right separation.

• Keep the speaker baffles at least 0.5m
clear of walls.

Stray magnetic fields

The speaker drive units create stray
magnetic fields that extend beyond the
boundaries of the cabinet. We recommend
you keep magnetically sensitive articles
(television and computer screens, computer
discs, audio and video tapes, swipe cards
and the like) at least 0.5m from the
speaker.

Connections (figure 4)

All connections should be made with the
equipment switched off.

Ensure the positive terminal on the speaker
(marked + and coloured red) is connected
to the positive output terminal of the
amplifier and negative (marked – and

coloured black) to negative. Incorrect
connection can result in
poor imaging and loss of bass.

Ask your dealer for advice when choosing
cable. Keep the total impedance below the
maximum recommended in the
specification and use a low inductance
cable to avoid attenuation of the highest
frequencies.

Fine tuning

Before fine tuning, double check that all the
connections in the installation are correct
and secure.

Moving the speakers further from the walls
will reduce the general level of bass. Space
behind the speakers also helps to create an
impression of depth. Conversely, moving
the speakers closer to the walls will
increase the level of bass.

If the bass is uneven with frequency it is
usually due to the excitation of resonance
modes in the room. Even small changes in
the position of the speakers or the listeners
can have a profound effect on how these
resonances affect the sound. Try mounting
the speakers along a different wall. Even
moving large pieces of furniture can have
an effect.

If the central image is poor, try moving the
speakers closer together or toeing them in
so they point at or just in front of the
listeners (figure 3).

If the sound is too harsh, increase the
amount of soft furnishing in the room (for
example use heavier curtains), or reduce it
if the sound is dull and lifeless.

Test for flutter echoes by clapping your
hands and listening for rapid repetitions.
Reduce them by the use of irregular
shaped surfaces such as bookshelves and
large pieces of furniture.

Ensure the speaker stands are firm on the
floor. If you have a carpet, use carpet­piercing spikes and adjust them to take up
any unevenness in the floor.

After Care

The cabinet surface usually only requires
dusting. If you wish to use an aerosol
cleaner, remove the grille first by gently
pulling it away from the cabinet. Spray onto
the cleaning cloth, not directly onto the
cabinet. The grille fabric may be cleaned
with a normal clothes brush whilst the grille
is detached from the cabinet.

Avoid touching the drive unit diaphragms,
especially the tweeter, as damage may
result.

24

Technical Features

Description

Drive units

Frequency range

Frequency response

Dispersion

Sensitivity

Harmonic distortion

Nominal impedance

Crossover frequency

Power handling

Max. recommended cable impedance

Dimensions

Net Weight

Nautilus™ tweeter
Flowport

2-way vented-box system

1x ø25mm (1 in) metal dome high-frequency
1x ø160mm (6 in) woven fibreglass cone bass/midrange

-6dB at 52Hz and 30kHz

72Hz – 20kHz ±3dB on reference axis

Within 2dB of reference response
Horizontal: over 40˚ arc
Vertical: over 10˚ arc

88dB spl (2.83V, 1m)

2nd and 3rd harmonics (90dB, 1m)
<1% 90Hz – 20kHz

8Ω (minimum 4.3Ω)

4kHz

25W – 100W into 8Ω on unclipped programme

0.1Ω

Height: 331mm (13 in)
Width: 201mm (7.9 in)
Depth: 242mm (9.5 in)

5 kg (11 lb)

DM303

Kevlar is a registered trademark of DuPont.
Nautilus is a trademark of B&W Loudspeakers Ltd.
Copyright © B&W Loudspeakers Ltd. E & OE
Design by Thomas Manss & Company.
Printed in Spain.

UK Sales Enquiries and Service
T [phone]
E [e-mail]

B&W Loudspeakers of America
T [phone]
E [e-mail]

B&W Loudspeakers (Asia) Ltd
T [phone]
E [e-mail]

B&W Loudspeakers Ltd
Dale Road
Worthing West Sussex
BN11 2BH England

T [phone]
F [phone]
[e-mail]
www.bwspeakers.com

II09375 Issue 1