Instrukcja obsługi Bowers & Wilkins 300 Series

Bowers & Wilkins głośnik 300 Series

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Strona 1/12

DM™302 Owner’s manual

300 Series

Figure 1

Figure 2

Figure 3

Figure 4

DM™302

Owner’s manual

English ...............................1

Deutsch.........................................2

Français........................................3

Español.........................................4

Nederlands..................................5

Dansk............................................6

Italiano .........................................7

Português......................................8

>0.5m

>1.5m

≈ ≈

≈

Amplifier

DM™302

INTRODUCTION

Thank you for purchasing B&W DM300 Series

speakers.

Since its foundation in 1966, the continuing

philosophy of B&W has been the quest for

perfect sound reproduction. Inspired by the

company’s founder, the late John Bowers, this

quest has entailed not only high investment in

audio technology and innovation but also an

abiding appreciation of music to ensure that the

technology is put to maximum effect.

It is also our policy to make sure the advanced

features pioneered on one product are

incorporated into others we manufacture.

The rear panel of the DM 302 cabinet is™

formed into a wedge pattern similar to the

interior of an anechoic chamber. This greatly

helps to break up the regular internal cabinet

volume that would otherwise encourage

coloration from internal standing waves.

Homogeneous fibre cone bass/midrange

drive units are used for minimum coloration

and maximum definition. The DM 302 also™

features a soft dome tweeter with magnetic

fluid cooling to ensure good definition to the

limits of audibility and maintain dynamics to

high sound levels.

However, no matter how good the speakers

themselves, they must work well into the listening

room and time spent on the installation process

will reap the reward of many hours listening

pleasure. Please read through this manual fully.

It will help you optimise the performance of your

audio system.

B&W distribute to over 50 countries world-wide

and maintain a network of dedicated distributors

who will be able to help should you have any

problems your dealer cannot resolve.

UNPACKING

(figure 1)

•Fold the top 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 packaging for

future use.

CONNECTIONS

(figure 2)

All connections should be made with the

equipment turned off.

Connect the positive terminal on the speaker

(marked + and coloured red) to the positive

terminal on the power amplifier and negative

(-, black) to negative (figure 2). Failure to

observe correct polarity will result in poor

sound balance and image focusing.

Always make sure all the terminal caps are

screwed down tight, as otherwise they

may rattle.

When choosing cable, keep the total electrical

impedance (out and back) below the maximum

recommended in the specification. In particular,

the cable to the tweeter should have low

inductance, otherwise the very high frequencies

will be attenuated. Ask your dealer for advice,

as the optimum cable will depend on the length

required.

POSITIONING

(figure 3)

Some experimentation with the position of the

speakers is well worthwhile to optimise the

interaction between them and the listening room.

However, as an initial guide:

Place the speakers on firm stands or bookshelves

that place the tweeters approximately at ear

level.

Place the speakers and the centre of the listening

area approximately at the corners of an

equilateral triangle.

Keep the speakers at least 1.5m (5ft) apart to

maintain left-right stereo separation.

Keep the speaker baffles at least 0.5m (20in)

clear of walls. Having the speakers too close to

walls increases the level of bass relative to the

midrange and may give a boomy quality to the

sound.

NOTE: The DM™302 produces a static

magnetic field that extends outside the cabinet

boundary. As such The DM 302 should not be™

placed within 0.5m (20in) of equipment that

may be affected by such a field, e.g. Cathode

Ray Tubes in TVs and Personal Computers.

FINE TUNING

Before fine tuning the installation, double check

the polarity and security of the connections.

If the level of bass is uneven with frequency, this

is usually due to strong excitation of resonance

modes in the room.

Even small changes in the position of the

speakers within the listening room can have a

profound effect on the perceived sound quality

by altering the excitation of these modes. Try

mounting the speakers along a different wall.

Even moving large pieces of furniture about can

have an effect.

If the general level of bass is too high, try

moving the speakers further away from the walls.

Conversely, if you need more bass, move the

speakers closer to the walls. Space behind the

speakers also improves the impression of

perspective on well recorded material.

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 listening area

(figure 4).

If the sound is too harsh, increase the amount of

soft furnishing in the room. For example, use

heavier curtains. Conversely reduce the amount

of soft furnishing if the sound is dull and lifeless.

Test for flutter echoes by clapping your hands

and listening for rapid repetitions. These can

smear the sound, but may be reduced by

irregular shaped surfaces such as bookshelves

and large pieces of furniture.

Ensure the speakers are firmly supported.

Speaker stands should be regarded as part of

the speaker and chosen with care. Ask your

dealer for advice on the best stands for your

needs.

AFTERCARE

The vinyl veneers normally only require 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 after

removing the grille from the cabinet.

Avoid touching the drive units, especially the

tweeter, as damage may result.

Specyfikacje produktu

Marka:	Bowers & Wilkins
Kategoria:	głośnik
Model:	300 Series

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