Bedienungsanleitung Bowers Wilkins CT8 CC (Seite 4 von 58) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Spanisch, Polnisch)

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cathode ray tube televisions or computer

monitors, audio and video tapes and swipe cards)

within 0.5m (2 feet) of the appliance. The

appliance may cause distortion of cathode ray

tube images beyond this distance. LCD and

Plasma screens are not affected.

26. Mounting – Do not place this product on an

unstable stand, tripod, bracket or table. The

product may fall causing serious injury and serious

damage. Any mounting of the product should

follow the manufacturer’s instructions.

Do not expose the device to rain, use it near water or

in damp or wet conditions, or place containers on it

containing liquids which might spill into any openings.

When setting up the device, make sure that the AC

outlet you are using is easily accessible. If some

trouble or malfunction occurs, immediately turn off the

power switch and disconnect the plug from the outlet.

Even when the power switch is turned off, electricity is

still flowing to the product at the minimum level. When

you are not using the device for a long time, make

sure to unplug the power cord from the wall AC outlet.

Environmental Information

All B&W products are designed to comply

with international directives on the

Restriction of Hazardous Substances

(RoHS) in electrical and electronic equipment and the

disposal of Waste Electrical and Electronic Equipment

(WEEE). These symbols indicate compliance and that

the products must be appropriately recycled or

processed in accordance with these directives. Consult

your local waste disposal authority for guidance.

This manual covers the CT SW10 and CT SW12

subwoofers and their matching SA1000 remote control

rack mount power amplifier.

Introduction

Dear customer,

Thank you for purchasing a Bowers and Wilkins

Custom Theatre system.

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

and movies to ensure that the technology is put to

maximum effect.

Custom Theatre speakers are specifically designed to

be built into the fabric of the listening room or into

custom furniture as part of a fully designed theatre

concept. To that end, they incorporate several features

that enable them to be adapted to a wide range of

installation conditions and deliver superb sound

quality. However, they specifically do not incorporate

features found on some other B&W products that are

not appropriate to this type of installation. An example

of such a feature would be tweeter on top, which only

operates well with a free-standing speaker.

Furthermore, because of the normal custom install

practice of hiding built-in speakers with acoustically

transparent cloth that matches the décor, all the

models except one are supplied without grilles. The

exception is the CT8 DS surround speaker, which

needs to protrude into the room in order for the side-

firing drivers to operate properly.

No matter how good the speakers themselves may

be, they will not deliver their full potential unless

properly installed. Please read through this manual

fully. It will help you optimise the performance of the

system.

B&W distributes to over 60 countries worldwide and

maintains a network of dedicated distributors who will

be able to help should you have any problems your

dealer cannot resolve.

Although the speakers are semi-active and require an

active crossover, all power amplification must be

separately sourced. Each CT8 LR, CT8 CC and CT8

DS requires two channels of power amplification, or

three if used with a CT8 SW subwoofer. This allows

the user maximum flexibility in choosing these

components.

The CT8 SW subwoofer, unlike the majority of

subwoofers currently available, does not contain its

own power amplifier and is used in a different manner

than is usual. The original concept of home theatre

based on various Dolby Digital and DTS systems

advocates five or more main channels plus a single

Low Frequency Effects (LFE) channel. The main

channels contain full range signals and the LFE

channel contains special effects up to approximately

140Hz. Recognising that many people do not want

five or more full-range speakers in one room, Dolby

Digital and DTS systems allow for the main channels

to operate with small speakers having a restricted

bass extension. The lowest frequencies from these

channels are filtered off and added to the LFE channel

to be reproduced by a subwoofer. The filter cut-off

frequency is normally set at around 80Hz, the rationale

being that sound gets progressively less directional the

lower the frequency and localisation becomes less

important. This is true to some extent, but the ears

can process directional information at very low

frequencies and the more the bass of the main

channels is extended, the more realistic the sound

stage becomes. Many high-end processors offer lower

filter cut-off frequencies for this very reason.

To preserve this directional information, a CT8 SW

may be added to each of the main channels as

desired, extending the frequency response well below

20Hz. The minimum recommended configuration is to

assign one subwoofer to each of the front left and

right channels, restoring some directional information

to the action directly on the screen and full directional

information to 2-channel audio programme. The sense

of spatial acoustic improves as more subwoofers are

added to the remaining channels. If higher sound

levels are required for larger listening environments

and greater realism, up to two subwoofers may be

added to each main channel. (It should be noted here

that the addition of more subwoofers to any single

channel requires an adjustment of the subwoofer

7106 CT800 manual Inside 30/9/08 9:45 Page 3

Bowers Wilkins CT8 CC Seite 4

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