BowersWilkins DM 110 Owners Manual

Page 2

Introducing the B&W DM110

Your Digital Monitor system DM110 was desrgned
and made by Bil-W. the British manufacturer whose
loudspeakers are used by the leading recording
companies worldwide to monitor digital recording
sessions.

it is a 2-way system ol qurte exceptional sensitivity.
Other characteristics are broad linear frequency
response and excellent transient performance. even
at very high sound pressure levels.

The pertorrnance at your DM110 will delight you - and
this manual will enable you to maximise your listening
pleasure,

Electrical Connection

Connect the loudspeaker to your amplifier by means
01 either the screw terminals or 4mm plugs. The red
terminal on the loudspeaker should be connected to
the red terminal on the amplifier. or the connection
marked positive,

Correct phasing oi stereo loudspeakers is extremely
important and incorrect connection will produce a loss
of bass and a poor stereo image. This will be rectified
by reversing the connections to one of the
loudspeakers.

It is good practice to keep the connecting leads
between the power amplifier and speakers as short as
possible. and to use a heavy gauge wire to keep the
DC resistance to a minimum.

As a guide we would recommend a minimum cable
size of 1.5mm2 up to 5m long. and 2.5mm2 or more
over 5m.

The Listening Room
and Positioning
your Loudspeakers

Both the listening room and positioning your
loudspeakers within the room will widely influence
tonal balance and stereo information you receive.
Choice of a listening room is often restricted but it l
are able to choose. the followrng points may be hel

1 The importance of the listening room, and its
influence on your loudspeakers. cannot be oversta
At frequencies below 300-400 Hz sound will be
determined by three factors: the loudspeakers
themselves. their position in the room. and the
acoustics of the room.

Generally. free-standing location of loudspeakers i:
better than shelf-mounting. and better still if they or
be placed asymmetrically to the room boundaries
since this will generally give a more linear frequent
response.

The complexity of the broad spectrum of acoustic
environments makes it impossible to give precise
instructions tor positioning your loudspeakers.
Therefore. any often on the part of the listener to tn
alternative positions will be amply rewarded in the i
sound achieved

Without exception. 3 corner position gives the least
awurate result. it shelt or wall-rriou nting is essentia
any asymmetry in the placing of the loudspeaker in
relation to a wall will generally effect an improveme
Your dealer stocks B&W stands and will certainty of
you the option of using them wherever possible.

2 The most unsuitable listening room would be om
where all dimensions (wall spacing and ceiling heig
are similar. since all resonances occur over a narro
band of frequencies, Rooms where all dimensions .
different give the most even and natural bass
response.

3 Protuberances and larger items oi lumiture tend
break up these resonances and. where prarnical.
varying the position of such items can often favoura
influence sound reproduction.

4 Soft tumishings, wall coverings and even picture:
influence middle- and high-frequencies. Ideally you
should aim to avoid discrete resonances or 'ringing
and an easy test for this problem is a simple handc
ll resonances exist there will be a distinct overhang
sustaining of the response which could last between
0.5 and 1 second.

5 A bookcase. placed on a wall opposite a reflectivr
surtace such as a window. will often help to alleviate
the problem outlined above. Alternatively. a small
panel of acoustic tiles placed on a wall can produce
remarkable improvement.