WILSON AUDIO Sasha WP, Owner'S Manual

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S A S H A
W / P
O w n e r ’ s M a n u a l
14
W i l s o n A u d i o S p e c i a l t i e s
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cause the unnatural boosting or accentuation of certain frequencies, typically in the
bass, to be found at certain discreet locations in the room. These locations differ ac-
cording to room dimension and size. A room generating severe standing waves creates
difficulty in setup. In these rooms, the speaker will sound radically different as it is
moved around. The effects of standing waves on a loudspeaker’s performance are pri-
marily in the areas listed.
• Tonal balance
• Resolution of low-level detail
• Soundstaging
Standing waves are more difficult to correct than slap echo because they tend to
occur at a lower frequency. Absorbent materials, such as Pinta Acoustic Sonex®, are
ineffective at controlling reflections in the bass region. Moving speakers about slightly
in the room is, for most people, their only control over standing waves. Sometimes a
change of placement of as little as two or three inches can dramatically alter the tonal
balance of a small system.
Fortunately, minor low frequency standing waves are well controlled by position-
ing ASC Tube Traps™ in the corners of the room. Very serious low frequency accentua-
tion usually requires a custom-designed bass trap system.
Low frequency standing waves can be particularly troublesome in rooms con-
structed of concrete or brick. These materials trap the bass in the room unless it is al-
lowed to leak out of the room through windows and doors.
In general, placement of the speaker in a corner will excite the maximal number
of standing waves in a room and is to be avoided for most direct radiator, full-range
loudspeaker systems. Some benefit is achieved by placing the stereo pair of loudspeak-
ers slightly asymmetrically in the listening room. This is so the standing waves caused
by the distance between one speaker and its adjacent walls and floors are not the same