Bowers & Wilkins CCM817: инструкция

Contents

English

Русский

Limited Warranty...........2

Ограниченная

Owner’s Manual............2

гарантия....................19

Руководство по

Français

эксплуатации ............19

Garantie limitée.............4

Manuel d’utilisation.......4

"esky

Záruka .......................21

Deutsch

Návod k pouãití..........21

Garantie .......................6

Bedienungsanleitung.....6

Magyar

Korlátozott garancia ..23

Español

Használati útmutató ...23

Garantía limitada...........8

Manual de

Polski

instrucciones................8

Gwarancja .................25

Instrukcja

Português

uÃytkownika ...............25

Garantia limitada.........10

Manual do utilizador....10

.......................27

Italiano

.....................27

Garanzia limitata.........12

Manuale di istruzioni ...12

.......................29

Nederlands

....................29

Beperkte garantie.......14

Handleiding ................14

Ελληνικά

Περιορισµένη

εγγύηση....................16

Οδηγίες Χρήσεως ....16

country of residence who will advise

The speakers are designed to operate

English

where the equipment can be serviced.

satisfactorily in a wide range of cavity

You can call B&W in the UK or visit our

volumes, ideally above 15 litres (0.5 cu ft),

web site to get the contact details of

so make sure the volume is not too

Limited Warranty

your local distributor.

restricted by cross studs.

Dear customer,

To validate your warranty, you will need to

In solid wall construction, be prepared to

produce this warranty booklet completed

provide a cavity in the wall that extends

Welcome to B&W.

and stamped by your dealer on the date of

outside the boundaries of the speaker's

This product has been designed and

purchase. Alternatively, you will need the

frame, otherwise bass performance will be

manufactured to the highest quality

original sales invoice or other proof of

compromised.

standards. However, if something does go

ownership and date of purchase.

The speakers are balanced for half-space

wrong with this product, B&W

mounting (ie flush in a ceiling or soffit).

Loudspeakers and its national distributors

Placement near a wall/ceiling junction or in

warrant free of charge labour (exclusion

a corner may give rise to too much bass

may apply) and replacement parts in any

Owner’s manual

and a boomy quality to the sound. Try to

country served by an official B&W

keep the speakers at least 0.5m (20in) from

distributor.

wall/ceiling edges.

Introduction

This limited warranty is valid for a period of

The following sections give guidance on

five years from the date of purchase or two

Thank you for purchasing Bowers and

optimum positioning, but this may be

years for electronics including amplified

Wilkins CCM817 speakers.

modified in line with domestic constraints.

loudspeakers.

Since its foundation in 1966, the continuing

WARNING: The speakers produce a static

philosophy of B&W has been the quest for

Terms and Conditions

magnetic field. As such They should not be

perfect sound reproduction. Inspired by the

placed within 0.5m (20in) of equipment that

1 The warranty is limited to the repair of

company’s founder, the late John Bowers,

may be affected by such a field (eg

the equipment. Neither transportation,

this quest has entailed not only high

Cathode Ray Tubes in TVs and Personal

nor any other costs, nor any risk for

investment in audio technology and

Computers).

removal, transportation and installation

innovation but also an abiding appreciation

of products is covered by this warranty.

of music and movies to ensure that the

Front speakers for audio or home

technology is put to maximum effect.

2 This warranty is only valid for the

theatre

original owner. It is not transferable.

The CCM817 is an audiophile quality

The CCM 817 is ideal for use when it is

speaker, primarily designed for in-ceiling

3 This warranty will not be applicable in

required that the speakers be mounted in

mounting in 2-channel and home theatre

cases other than defects in materials

the ceiling so as to be as unobtrusive as

installations. Its angled baffle enables the

and/or workmanship at the time of

possible. For home theatre, they should be

optimum listening axis to be directed more

purchase and will not be applicable:

mounted about 0.5m (20 in) from the plane

towards the listening area, which improves

of the screen or the front wall in the case of

a. for damages caused by incorrect

sound quality and imaging in a way that

an audio-only installation. The frame should

installation, connection or packing,

normal ceiling speakers cannot offer. It also

be rotated so that the drive units are

has applications as an in-wall surround

b. for damages caused by any use other

directed towards the listening area.

speaker.

than correct use described in the user

(figure 1)

manual, negligence, modifications, or

However, no matter how good the speakers

For 2-channel applications, the speakers

use of parts that are not made or

themselves, they will not deliver their full

should subtend an angle of between 40º

authorised by B&W,

potential unless properly installed. Please

and 60º at the centre of the listening area.

read through this manual fully. It will help

c. for damages caused by faulty or

(figure 2)

you optimise the performance of the

unsuitable ancillary equipment,

system.

For home theatre, the left and right

d. for damages caused by accidents,

speakers should be approximately 0.5m

B&W distributes to over 60 countries

lightning, water, fire heat, war, public

(20 in) from the sides of the screen.

worldwide and maintains a network of

disturbances or any other cause

(figure 3)

dedicated distributors who will be able to

beyond the reasonable control of B&W

help should you have any problems your

and its appointed distributors,

Surround speakers

dealer cannot resolve.

e. for products whose serial number has

The speakers should normally be

been altered, deleted, removed or

Check the contents

positioned in the ceiling with the frame

made illegible,

rotated so that the drive units are directed

This pack should contain:

towards the centre of the listening area.

f. if repairs or modifications have been

2x Baffle with drive units and crossover

executed by an unauthorised person.

5.1 channel

2x Grille

4 This guarantee complements any

2x Paint mask

The horizontal angle to the centre of the

national/regional law obligations of

2x Alignment template

listening position should be approximately

dealers or national distributors and

120º round from the centre of the screen.

does not affect your statutory rights as

Choosing the position

The speakers may also be successfully

a customer.

Check that there is no conflict with other

mounted in the side wall for this

installations (pipe work, air conditioning,

application. They should be positioned at

How to claim repairs under

power cabling etc.). In existing drywall

least 60cm (2 ft) above ear height and with

warranty

construction, use a stud-finding tool to

the frames rotated so that the drive units

Should service be required, please follow

map the construction accurately and a pipe

are directed towards the centre of the

the following procedure:

detector to scan the proposed installation

listening area. (figure 4)

position.

1 If the equipment is being used in the

6.1 channel

country of purchase, you should

Refer to the section drawing of the speaker

Position two speakers to the sides in line

contact the B&W authorised dealer

and ensure that there is enough clearance

with the centre of the listening area and

from whom the equipment was

behind the plasterboard (sheetrock) for the

one centrally behind the listeners, with the

purchased.

clamps to swing out fully.

frames rotated so that the drive units are

2 If the equipment is being used outside

Avoid installing the speakers in the same

directed towards the centre of the listening

the country of purchase, you should

cavity as flimsy ducting, which may be

area. (figure 5)

contact B&W national distributor in the

induced to rattle.

2

7.1 channel

Damping the cavity

the vertical skirting edge of the mesh when

you replace it in the frame.

Position two speakers to the sides in line

Fill the wall cavity, allowing room for the

with the centre of the listening area and

speaker itself, with unlined fibreglass or

Do not stretch the scrim unduly as it may

two behind the listeners, subtending an

mineral wool matting. The packing density

relax and pull away from the mesh over

angle of approximately 40º. (figure 6)

should be just enough to comfortably

time and cause a buzzing noise.

prevent the material from dropping or

Do not re-finish the drive units or baffle

PREPARING THE LOCATION

sagging over time. In an open wall cavity, fill

area behind the grille. Use the paint mask

to a distance of at least 30cm (1 ft) above

provided. Avoid touching the drive units, as

Choosing cable

and below the speaker. (figure 8)

damage may result.

Excessive resistance in the speaker cable

In the ceiling, drape the matting at the back

wastes power and alters the frequency

of the ceiling board, covering the aperture

response of the speaker. Always try to keep

and extending at least 30cm (1 ft) around

the resistance as low as possible with the

the speaker into open void.

loop resistance preferably below 0.5 ohms

IMPORTANT: Ensure that the materials you

for non-critical applications and below

use meet local fire and safety regulations.

0.2 ohms for best results. Use the table of

figure 10 to calculate the minimum gauge

Fitting the speaker

of cable required.

All connections should be made with the

Existing drywall construction

equipment switched off.

(retrofit)

Connect the cable, observing the correct

Mark the centre position of the speaker and

polarity.

position the template so the mark shows

With the grille removed, position the

through the hole in the middle.

speaker in the aperture and screw in the

Trace round the outer edge of the template

4 screws visible from the front. (figure 9)

and cut neatly just inside the line.

These screws automatically swing out

clamping dogs that locate behind the

To improve the mechanical integrity of the

mounting surface. Ensure that they have

ceiling or wall and reduce the likelihood of

located properly before fully tightening the

rattles, we recommend you apply a bead of

screws. A certain amount of flexing of the

wood glue or mastic along the joints

frame is allowed to take up unevenness in

between the back of the plasterboard and

the mounting surface, but do not over-

the studs in the vicinity if the speaker.

tighten the screws as excessive distortion

Run the cable to the aperture, allowing

of the speaker frame may result.

enough length to comfortably connect the

speaker, but not too much, as the excess

Adjusting the speaker

may rattle against the structure.

The speaker is designed to point towards

the listening area and for most instances

New drywall construction

this gives best results. However, for some

The speaker can be installed once the

surround speaker applications, better

ceiling or wall is completed in the same

overall results may be obtained if the sound

manner as retrofitting, but it is easier to

is directed away from the listening area.

position and cut the hole if the optional pre-

Typically this may apply if:

mount kit is used before the plasterboard

(sheetrock) is fitted.

a. The room is particularly live and the

sound becomes harsh.

Staple or nail the PMK to the studs as

described in the instructions with the kit.

b. The listening area is a large proportion

Run the cable and secure it to the fixing

of the room. Increasing the amount of

point on the PMK. Allow enough length to

reflected sound and reducing the

comfortably connect the speaker, but not

amount of direct sound may give a

too much, as the excess may rattle against

better average balance between the

the structure.

speakers for all listeners.

Results are affected by how well the

Customising

plasterboard is attached to the studs and

we recommend gluing as well as screwing

The frame and grille have a paintable white

or nailing the panels to the studs in the

semi-matte finish, ready if necessary to be

vicinity of the speaker.

re-finished to match your own decor.

Once the board is fitted, the inner flange of

Before painting the grille, remove it from the

the PMK serves as a guide for a hole router

frame and peel off the fabric scrim from the

or saw.

back, otherwise the pores will get clogged

and the sound will be impaired.

Solid wall construction

When replacing the scrim, first spray the

In order for the bass performance not to be

back of the grille mesh (NOT the scrim)

compromised, the speaker requires a cavity

with a light coating of 3M SprayMount

volume of at least 15 litres. This means that,

adhesive or similar. Locate the small V cut

in a standard 10cm (4 in) thick wall, the

in the scrim and line it up with the V cut in

cavity will extend beyond the boundaries of

the edge of the grille mesh. The scrim

the speaker frame. It is possible to provide

should overlap the vertical skirting edge of

this cavity simply by using a lintel, covering

the mesh. Smooth out the scrim, working

the hole with plasterboard and fitting the

away from the starting point. Avoid creases

speaker as described above for retrofitting

behind the curved profile of the mesh, as

into a drywall. (figure 7)

these will show through the grille, but it

does not matter if the scrim folds back up

3