Bang & Olufsen BeoLab 5 - User Guide - Manual (Page 12)

Adapt BeoLab 5 to your system
The Acoustic Lens Technology system
in BeoLab 5 ensures better balance
between sound in the high and mid
tone frequencies coming directly from
the loudspeaker, and sound reflected by
the room. The Acoustic Lens Technology
system also ensures correct tonal
balance in the whole area in front of
the loudspeaker.
The BeoLab 5 Adaptive Bass Control
system and the Acoustic Lens
Technology system ensures optimum
freedom in the placement of your
loudspeakers. Performing a calibration
of the Adaptive Bass Control system
ensures that the loudspeaker is
optimally suited to its placement and
the surroundings – and therefore, gives
the best possible sound quality
Adaptive Bass Control calibration
Normally, when a loudspeaker is placed in a
corner, the bass level is boosted compared to
the bass level in a loudspeaker placed in a
more freestanding position.
With other speaker systems, you have to
consider this when placing them. With
BeoLab 5, the Adaptive Bass Control system
– when calibrated – filters out this change in
the bass level.
During the calibration, the loudspeaker
generates a series of sound signals and
measures the response from walls, the floor,
the ceiling, large objects and other surfaces in
the room. Based on these measurements, the
loudspeaker automatically calculates optimal
settings for the Adaptive Bass Control filter.
The ‘Adaptive Bass Control’ calibration ensures that
the bass level suits the placement of the
loudspeaker, and thus the surroundings.
When you switch the loudspeaker on for the first
time, the indicator light flashes slowly green* –
signalling that it has not yet been calibrated.
Important!
– Before you start the calibration, place the
loudspeaker where you want it to be.
– Do not calibrate more than one loudspeaker at a
time. Otherwise, the sound emitted from one
loudspeaker interferes with the measurements
done in the other, and vice versa.
– Consider the ‘normal status’ of the listening
room: Will the doors be closed…?
The windows…? Will the curtains be drawn…?
Will there be many people in the room…?
– If you, later on, decide to move the loudspeakers,
rearrange your room, carpet the floor, etc., we
recommend that you perform the calibration for
each loudspeaker once again.
– We recommend that you keep any tone control
settings neutral.
During the calibration make sure that no noise
interferes with the sounds emitted by the
loudspeaker. Such noise might, for example, be:
a running vacuum cleaner, ventilation or air
conditioning systems, motor sounds nearby, etc.
Up to a certain level, the loudspeaker will try to
compensate for this noise, but eventually, the noise
may cause the calibration to fail – indicated by a
slowly flashing red light. Should this happen, you
must restart the calibration – perhaps later on,
when the noise has stopped...
Acoustic Lens Technology –
manufactured under license
from Sausalito Audio Works.
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