Wilson Electronics Alexandria XLF, Owner'S Manual

Page: 22 / 94

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W i l s o n A u d i o S p e c i a l t i e s
of the room and listening for the characteristic sound of the echo in the midrange. Slap
echo destroys the sound quality of a stereo system in two ways:
• It adds harshness to the upper midrange and treble by storing time-domain
smearing energy.
• It destroys the delicate phase relationships, which help to establish an ac-
curate soundstage.
Slap echo (see Figure 3) is a common acoustical problem in the typical domestic lis-
tening room because most of these rooms have walls with a hard, reflective nature, only
occasionally interrupted by curtains, wall art, or drapes. The best (but least practical)
solution to eliminate slap echo is nonparallel walls. This is because, rather than support
f
igure
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ommon
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oom
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eflection
p
roblemS