Bowers & Wilkins 606 Manuel page 8

4. Fine Tuning
Before fine tuning, make sure that all the connections in the
installation are correct and secure.
Moving the speakers further from the walls will generally reduce
the volume of bass. Space behind the speakers will also help
to create an aural impression of depth. Conversely, moving the
speakers closer to the walls will increase the volume of bass.
If you want to reduce the volume of bass without moving the
speakers further from the wall, fit the foam plugs or, for less
severe bass reduction, the foam rings in the port tubes (above).
If the bass seems uneven with frequency this will most probably
be a consequence of the acoustic properties of your listening
room. Even small changes in the position of the speakers
or listening position can have a significant effect on sonic
performance, especially at low frequencies. Try moving your
listening position or locating your speakers along a different wall
if possible.
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If no alternatives exist, you can adjust your loudspeakers'
low-frequency performance using the supplied foam bungs.
The bungs are a two-piece part, allowing for a degree of
fine-tuning using either the outer, larger-diameter piece
in isolation or the two parts together. Using solely the outer,
larger-diameter foam bung will deliver less bass attenuation
than the complete bung assembly.
If using floor stands to support the speakers, ensure that they
rest firmly on the floor. Use carpet piercing spikes if appropriate
and adjust them to take up any unevenness. If you are using
our STAV24 S2 stands, we recommend mass-loading them to
deliver the best combination of stability and performance. We
recommend filling each stand to its maximum available volume
using an appropriate material such as kiln-dried sand.