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expose the product to rain or
excessive moisture such as in a sauna
or bathroom. Do not use this product
near water – for example, near a
bathtub, washbowl, kitchen sink,
laundry tub, in a wet basement, or
near a swimming pool and the like.
14 Object and Liquid Entry – Never push
objects of any kind into this product
through openings, as they may touch
dangerous voltage points or short out
parts that could result in a fire or
electric shock. Never spill liquid of any
kind on the product. Do not place any
object containing liquid on top of the
product.
15 Cleaning – Unplug the product from
the wall outlet before cleaning. The
cabinet of the subwoofer may be
cleaned by dusting with a dry cloth. If
you wish to use an aerosol cleaning
spray, do not spray directly on the
cabinet; spray onto the cloth. Remove
the grille first so that the cloth does not
become stained, but be careful not to
disturb the drive unit. The grille itself
may be cleaned using a soft brush.
16 Attachments – Do not use attachments
not recommended by the product
manufacturer, as they may cause
hazards.
17 Accessories – Do not place this
product on an unstable cart, stand,
tripod, bracket or table. The product
may fall, causing serious injury to a
child or adult, and serious damage to
the product. Use only with a cart,
stand, tripod, bracket or table
recommended by the manufacturer or
sold with the product. Any mounting of
the product should follow the
manufacturer’s instructions and should
use a mounting accessory
recommended by the manufacturer.
18 Moving the appliance – A product and
cart combination should be moved
with care. Quick stops,
excessive force and
uneven surfaces may
cause the product and
cart combination to
overturn. Check that there are no
cables under the carpet that may be
damaged by the spike feet. Do not
walk the product on the spike feet as
this may cause them to become
detached from the cabinet and cause
damage. Take care not to impale
yourself with the spike feet.
19 Non-use Periods – The power cord of
the appliance should be unplugged
from the outlet during lightning storms
or when the apparatus is left unused
for a long period of time.
20 Servicing – Do not attempt to service
this product yourself, as opening or
removing covers may expose you to
dangerous voltage or other hazards.
Refer all servicing to qualified service
personnel.
21 Damage Requiring Service – Unplug
this product from the wall outlet and
refer servicing to qualified personnel
under the following conditions:
a When the power-supply cord or
plug has been damaged.
b If liquid has been spilled or objects
have fallen into the appliance.
c If the product has been exposed to
rain or water.
d If the product does not operate
normally by following the operating
instructions. Adjust only those
controls that are covered by the
operating instructions, as an
improper adjustment of other
controls may result in damage and
will often require extensive work by
a qualified technician to restore the
product to its normal operation.
e If the product has been dropped, or
damaged in any way.
f When the product exhibits a distinct
change in performance – this
indicates a need for service.
22 Replacement Parts – When
replacement parts are required, be
sure the service technician has used
replacement parts specified by the
manufacturer or have the same
characteristics as the original part.
Unauthorised substitutions may result
in fire, electric shock or other hazards.
23 Mains Fuses – For continued
protection against fire hazard, use
fuses only of the correct type and
rating. The amplifier is designed to
operate with nominal mains supplies in
the range 100V to 230V AC, but
different types of fuse are used,
dependent on the mains voltage. The
correct fuse specification for each
voltage range is marked on the
product.
24 Safety Check – Upon completion of
any service or repairs to this product,
ask the service technician to perform
safety checks to determine that the
product is in proper operating
condition.
25 Magnetic Fields – the product creates
a stray static magnetic field. Do not
place any object that may be damaged
by this magnetic field (eg 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.
Introduction
Thank you for purchasing a B&W ASW
Active Subwoofer.
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 the demands of film sound to
ensure that the technology is put to
maximum effect.
This subwoofer has been designed for
Home Theatre installations and to augment
the bass performance of full-range
speakers in 2-channel audio use. Adding
the subwoofer to your system not only
extends the bass to lower frequencies, it
improves the midrange clarity by reducing
the low-frequency demands on your
existing speakers.
Please read through this manual fully before
using the subwoofer. All sound installations
require some planning and experimentation
if you are to get the best out of the
products used and this manual will guide
you in this process.
As the subwoofer is connected to the
electricity power supply, it is important that
you familiarise yourself with the safety
instructions and heed all warnings.
Keep this manual in a safe place for future
reference.
B&W products are distributed to over
60 countries worldwide and we maintain an
international network of carefully chosen
and dedicated distributors. If you have a
problem, which your dealer cannot resolve,
our distributors will be more than willing to
assist you.
Unpacking
(figure 1)
The easiest way to unpack the subwoofer
and avoid damage is as follows:
• Open the carton flaps right back and
invert the carton and contents.
• Lift the carton away from the product.
We recommend that you retain the
packaging for future use.
In addition to this manual, the carton
should contain:
1 Subwoofer
1 Accessory pack containing:
4 Rubber feet
4 Spike feet
4 Lock nuts
1 International warranty document
A tour of the subwoofer
(figure 2)
1 Power/Standby indicator
2 VOLUME control
3 LOW-PASS FREQUENCY control
4 MODE On/Auto/Standby switch
5 Equalisation switch
6 LOW-PASS FILTER defeat switch
7 Phase switch
8 LINE IN
9 LINE OUT
10 LINK OUT
11 POWER on/off switch
12 Fuse holders
13 Power input socket
3