Limited Warranty - Bowers & Wilkins CDS3 Owner's Manual

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Owner's manual (6 pages)

Table Of Contents

Table of Contents

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6002 CDS3 OM Inner Iss1

To optimise the smoothness of sounds panning from

the front of the room to the back and vice versa when

speakers are used in dipole mode, we recommend

that the side speakers have their positive lobes

(arrows) pointing towards the front of the room and

the rear speakers have their positive lobes (arrows)

pointing towards the centre of the rear wall. (figure 6)

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 (20 in) from the speaker. LCD and plasma

screens are not affected by magnetic fields.

Connections

(figure 7)

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.

The spring-loaded terminals accept bared wire ends.

Press down on the end of the terminal to expose the

side hole.

Fixing the speaker in place

Retrofit

Use a stud finding tool to locate the position of the

studs behind the plasterboard panels.

Use the template provided to mark the position of the

speaker. The outside edge of the template represents

the size of the wall frame. Do not allow the template to

overlap a stud position or the swing-out clamps will

not operate correctly.

Mark along the inner edge of the slots in the template.

Join up the lines and cut out the aperture. (figure 8)

New construction

When the wall studding is in place, but before the

plasterboard (drywall) panels are fitted, fix the pre-

mount kit (PMK), following the instructions included

with the kit. (figure 9) Plasterboard (drywall) panels

may then be fitted with an aperture for the PMK and

finished.

All applications

Draw the cable to the aperture. Make sure that the

cable and any other services in the cavity are

prevented from rattling against the structure, either by

securing or padding.

Push acoustic wadding into the wall cavity between

the sides of the aperture and the vertical studs and

above and below the aperture to a distance of 15cm

(6 in) or more. Suitable materials are fibreglass or

mineral wool matting, as sold for heat insulation, or

polyester fibre used for filling duvets (comforters).

Foam pads may also be used, but these must be of

the open cell variety. Closed cell foam, commonly sold

for furniture use is not suitable. (figure 10)

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Push the wall frame into position and secure. For all

situations, this is done by screwing up the swing-out

clamps. The initial turn of the screw will cause the

clamps to swing out into position and further turning

will draw them towards the back of the wall. In retrofit

situations without the PMK for protection, take care not

to over tighten the clamps, otherwise the plasterboard

will crush and weaken the fixing. (figure 11)

Decorating is best carried out at this stage, before the

baffle and drivers are fitted. The wall frame may be

painted using any normal household paint. Never paint

over the grille fabric as this will clog the pores and

impair the sound. We recommend you do not attempt

to paint the speaker baffle. The combination of a black

grille frame in front of a black baffle ensures that the

cross pattern of the grille frame is least visible, even

with white cloth.

Connect the cable to the speaker as described in the

"Connections" section above and screw the baffle into

the wall frame using the pan head screws provided.

The grilles are a push fit onto the baffle, but before

fitting them, balance the installation following the

processor instructions and select dipole or monopole

mode as preferred (see below).

Mode selection

Use the switch on the front baffle to select between

monopole and dipole modes. In the G position, the

speaker is monopole and in the GG position it is dipole.

Experiment to find the settings best suited to your

requirements. Typical combinations are:

•

It would be unusual, but not impossible, to set side

speakers to monopole and rear speakers to dipole.

Aftercare

With the grille detached from the cabinet, clean the

fabric with a normal clothes brush or vacuum cleaner

with appropriate accessory.

Avoid touching the drive units, especially the tweeter,

as damage may result.