Bowers & Wilkins CT700 Bedienungsanleitung PDF herunterladen (Seite 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

(CRT 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

All connections should be made with the equipment

switched off.

CT700 Series speakers have a pair binding post

connection terminals and one Neutrik

Speakon

connection socket on their rear panels. The binding

post terminals provide quick and easy connection of

stripped wires while the Speakon socket provides a

more secure and reliable connection method.

If the binding post terminals are to be used, connect

the positive cable to the red terminal and the negative

cable to the black terminal. Incorrect connection can

result in poor imaging and loss of bass. Figure 5a

illustrates use of the binding post terminals

If the Speakon

option is to be used, disassemble the

Speakon

plug as shown in Figure 5b, connect the

positive cable to the terminal marked +1 and the

negative cable to the terminal marked -1. Incorrect

connection can result in poor imaging and loss of

bass. Once the plug is reassembled it can be inserted

into the socket and locked by twisting clockwise.

Ask your dealer for advice when selecting speaker

cable. Keep its total impedance below the maximum

recommended in the speaker specification and use a

low inductance cable to avoid attenuation of high

frequencies.

Neutrik

and the names of Neutrik

products

referenced herein are either trademarks and/or service

marks of Neutrik

Fine Tuning

Before fine tuning, make sure that all the connections

in the installation are correct and secure.

If the bass seems uneven with frequency this will most

probably be due to resonance modes in the listening

room. Even small changes in the listening position can

have a profound effect on how these resonances

affect the sound. Try moving the listening position. The

presence and position of large pieces of furniture can

also influence resonance modes. If you want generally

to reduce the volume of bass fit the foam plugs in the

speakers’ port tubes as illustrated in Figure 6.

If the sound is too bright, increasing the amount of

soft furnishing in the room (heavier curtains for

example) may help balance the sound. Conversely,

reducing the amount of soft furnishing may help

brighten a dull sound.

Some rooms suffer from “flutter echoes” – echoes that

“bounce” between parallel room boundaries. Flutter

echoes can colour the sound of the speakers in the

room. Test for flutter echoes by standing in the middle

of the room and clapping your hands. Flutter echoes

can be reduced by placing irregular shaped items or

non-reflective surfaces, bookshelves, rugs or pictures

for example, on one of the offending walls or floor.

Running-in Period

The performance of the speaker will change subtly

during the initial listening period. If the speaker has

been stored in a cold environment, the damping

compounds and suspension materials of the drive

units will take some time to recover their correct

mechanical properties. The drive unit suspensions will

also loosen up during the first hours of use. The time

taken for the speaker to achieve its intended

performance will vary depending on previous storage

conditions and how it is used. As a guide, allow up to

a week for the temperature effects to stabilise and

15 hours of average use for the mechanical parts to

attain their intended design characteristics.

However, longer run-in periods (as long as a month)

have been reported and there is evidence to suggest

that this has little to do with the speaker changing and

more to do with the listener getting used to the new

sound. This is especially so with highly revealing

speakers such as these where there may be a

significant increase in the amount of detail compared

with what the listener has previously been used to; the

sound may at first appear too “up front” and perhaps

a little hard. After an extended period of time the

sound will seem to mellow, but without losing clarity

and detail.

Aftercare

The cabinet surfaces usually only require dusting. If you

wish to use an aerosol or other cleaner, remove the

grille first by gently pulling it away from the cabinet.

Spray aerosols onto the cleaning cloth, not directly

onto the product. Test a small area first, as some

cleaning products may damage some of the surfaces.

Avoid products that are abrasive, or contain acid, alkali

or anti-bacterial agents. Do not use cleaning agents on

the drive units. The grille fabric may be cleaned with a

normal clothes brush whilst the grille is detached from

the cabinet. Avoid touching the drive units, especially

the tweeter, as damage may result.

Limited Warranty

This product has been designed and manufactured to

the highest quality standards. However, if something

does go wrong with this product, B&W Group Ltd. 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

1 The 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.

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