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

1The 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.

2This warranty is only valid for the original owner. It is not transferable.

3This 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.

4This 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:

1If the equipment is being used in the country of purchase, you should contact the B&W authorised dealer from whom the equipment was purchased.

2If 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 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 packing for future use.

Check in the carton for:

4 Spike feet with lock nuts

2 Foam bungs

1 International warranty booklet

Connections (Figure 2 & 3)

All connections should be made with the equipment switched off.

There are 2 pairs of terminals at the back of the speaker which permit bi-wiring if desired. On delivery, the separate pairs are connected together with high-quality links for use with a single 2-core cable. For single cable connection, leave the links in place and use either pair of terminals on the speaker.

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.

To bi-wire, remove the links by loosening the terminal caps and use a separate

2-core cable from the amplifier to each pair of terminals. This can improve the resolution of low-frequency detail. Observe the correct polarity as before. When bi- wiring, incorrect connection can also impair the frequency response.

The terminals accept bare wire. Always make sure terminals are screwed down tight as otherwise they may rattle.

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

Positioning (Figure 4)

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:

Do not fit the spike feet until you have found the best position for the speakers.

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 midrange and may give a boomy quality to the sound.

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.

Fine tuning

Before fine tuning, make sure that all the connections in the installation are correct and secure.

If the level 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 large pieces of furniture can have an effect.

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 you want to reduce the bass level without moving the speakers further from the wall, fit the foam bungs in the port tubes. (Figure 6)

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

(Figure 5)

If the sound is too harsh, increase the amount of soft furnishings 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

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Bowers & Wilkins CM6, CM4 owner manual English, Limited Warranty