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First Reflection Points
Since the ear/brain system tends to integrate the sounds arriving within a 10 millisecond time
window, it is important to control the early reflections arriving from the sidewalls to the
listening position. A hard-surfaced wall can produce a strong frequency-dependent reflection
that can interfere with the reproduced sound-stage, as well as change the perceived tonal
balance of the system. Therefore, damping these first reflection points is strongly
recommended. Please refer to Section 8.3, Early Reflections, beginning on page 25, for
further information.
Corner Treatment
It is important to control the first reflections of low frequency sound, which normally occur at
the corners behind the loudspeakers. These reflections can cause significant distortions in
phase and amplitude, resulting in muddy bass definition and smeared bass transients. Placing
Tube-Traps (available from Acoustic Sciences Corporation) at the room corners can
significantly control these bass colorations and restore the quickness of bass transients.