Bowers & Wilkins ASW 12CM: Limited Warranty

7276 10 CM manual revised.qxd 27/3/09 10:11 Page 8

p

ortrayal, and one more satisfying in the long term, is

s

ubwoofer(s) and satellite speakers to the listening

to be had by setting the subwoofer level lower than

position, re-assess the PHASE switch setting. You

t

he standard calibration level.

s

hould also check the volume of the subwoofer (using

either the processor output levels or the VOLUME

2

-channel Audio

c

ontrol on the subwoofer amplifier as appropriate), but

S

et the system up in the preferred position and play

o

nly after setting the phase correctly.

some programme with a steady bass content.

Aftercare

The optimum settings of the PHASE switch and the

T

he cabinet surfaces usually only require dusting. If

L

OW-PASS FREQ control are inter-related and also

y

ou wish to use an aerosol or other cleaner, remove

d

ependent on the low-frequency cut-off characteristic

the grille first by gently pulling it away from the

of the satellite speakers. However, the settings

c

abinet. Spray aerosols onto the cleaning cloth, not

r

ecommended above for the LOW PASS FREQ control

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

and PHASE switch have been chosen to integrate well

some cleaning products may damage some of the

w

ith most satellite speaker bass alignments.

s

urfaces. Avoid products that are abrasive, or contain

Using the initial settings, first check the setting of the

acid, alkali or anti-bacterial agents. Do not use

PHASE switch. Choose the option that gives the fullest

c

leaning agents on the drive unit. The grille fabric may

s

ound. Normally the recommended option will be

be cleaned with a normal clothes brush whilst the

optimum, but may not be in certain circumstances.

grille is detached from the cabinet. Avoid touching the

These may be that the power amplifiers feeding the

drive unit, as damage may result. Switch off the

satellite speakers invert the signal or that the

subwoofer before cleaning.

subwoofer is not placed close to the satellite speakers.

We have chosen the finest wood veneers for the

Next, adjust the VOLUME (LINE or SPEAKER) of the

surface of the cabinet, but please be aware that, like

subwoofer relative to the satellite systems to your

all natural materials, the veneer will respond to its

liking. Use a wide variety of programme material to get

environment. Keep the product away from sources of

an average setting. A setting that sounds impressive

direct heat such as radiators and warm air vents to

on one piece may sound overpowering on another.

avoid the risk of cracking. The wood is treated with an

Listen at a realistic volume level as the perception of

ultra-violet resistant lacquer to minimise changes in

musical balance varies with sound level.

colour over time, but a degree of change is to be

expected. This effect may be particularly noticeable

Finally, adjust the LOW-PASS FREQ control to give the

where the area covered by the grille, or areas kept in

smoothest transition between the subwoofer and

shadow, change more slowly than other areas. Colour

satellite speakers.

differences may be rectified by exposing all the veneer

All Applications

surfaces equally and evenly to sunlight until the colour

The BASS EXTENSION switch offers three options of

is uniform. This process can take several days or even

subwoofer bass extension. Position A gives the

weeks, but may be accelerated by careful use of an

greatest extension and position C gives the least

ultra-violet lamp.

extension. Position B provides a compromise setting.

Do not use the subwoofer as a table. When in use,

If the system is to be used at very high volume levels

objects left on top of the subwoofer are liable to rattle.

or in a large listening room, restricting the bass

In particular, avoid the risk of liquids being spilled (e.g.

extension by selecting either B or C may help ensure

from drinks or vases of flowers).

that the subwoofer is not asked to exceed its

If the system is taken out of use for a long period,

performance limits. In most situations the BASS

disconnect the subwoofer from the mains supply.

EXTENSION switch should be left in position A.

The EQ switch alters the subwoofer bass roll-off

alignment. The bass you hear is a combination of the

subwoofer plus the effects of the room and you should

Limited Warranty

choose the position that best complements your room

and the location of the subwoofer. Position A gives a

This product has been designed and manufactured to

“drier” alignment, more suited to placing the

the highest quality standards. However, if something

subwoofer in a corner or compensating for a resonant

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

room. Position B is suited to a less resonant room

its national distributors warrant fr

ee of charge labour

acoustic and use away from a corner.

(exclusion may apply) and replacement parts in any

country served by an official B&W distributor.

If you get pr

oblems with uneven bass – certain bass

notes are exaggerated more than others – then you

This limited warranty is valid for a period of five years

probably have a room interface problem and it is worth

fr

om the date of pur

chase or two years for electr

onics

experimenting with the location of the subwoofer

.

including amplified loudspeakers.

What may seem like small changes in position – 15cm

T

erms and Conditions

(6in) or so – can have a profound effect on the sound.

The use of multiple subwoofers can smooth the

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The warranty is limited to the repair of the

effects of room resonances, as each subwoofer will

equipment. Neither transportation, nor any other

tend to excite r

esonances at different frequencies. If

costs, nor any risk for r

emoval, transportation and

you appreciably alter the relative distances from the

installation of products is covered by this warranty.

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