Genesis I.C.E. 201 - Manual (Page 14)

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a bs o l u t e f i d e l i t y
Further adjustments
With the woofer towers positioned in the recommended placement
behind and outside the midrange tweeter panels, low bass in the
room should not be a problem. Should you have too much bass,
simply turn the volume down on the remote control. Too little, and
the opposite will apply.
In some problematic rooms a resonance may develop at one or
two frequencies that is unnatural to the music. By moving the
woofer towers closer to the rear wall or farther
from the rear wall,
the resonance may be reduced at the listener’s position. There
are no absolute rules concerning problematic rooms, so do not be
afraid to experiment with best woofer placement.
Ultimately, it is all about balance. You have a number of controls
at hand with which to adjust the bass response, the low-pass filter
frequency and woofer volume. You can also move the speakers
closer together (for better coupling), and also move the woofer
towers closer together, or further apart, or even move them closer
to a corner of the room for more bass.
One trick that we have found to always work is NOT
to have the woofer towers placed symmetrically in the
listening room. When you have the woofers
equidistance to the walls, there will be wall-loading
which will increase the volume of some frequencies in
the bass and mid-bass.
Place the left and right woofer towers equidistance from
the midrange towers. However, have one woofer tower
further to the side of one midrange tower, and have the
other woofer tower further to the back of the other
midrange tower. Distance X on the diagram should be
no more than a quarter wavelength of the crossover
frequency – approximately 36 inches or 0.9m.
It may look strange, but the principle here is to position
the midrange/tweeter towers for the best imaging and
soundstage, and the woofer towers for the smoothest and best bass
and ambience retrieval.