Wisdom Audio Wisdom & Sage Series SC-1 - Manual (Page 21)

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benefit (when done properly) of providing outstanding acoustic isolation from
adjacent spaces as well as superb bass reproduction. This approach goes well
beyond the scope of an owner’s manual; if you are interested, you should con-
tact a professional acoustician who has specialized in domestic listening room
design.
Main Speaker Placement Within the room itself, placement of the speakers and the listener will have a
profound effect on the performance of the system, particularly below 300 Hz
or so. There is no “perfect” position that will solve all problems, but finding the
best compromise will make it easier to solve the remaining problems with the
SC-1.
Your Wisdom Audio dealer can help you with optimizing your speaker place-
ment, which is never quite as simple as it seems it should be. The characteristics
you should listen for are several:
• Stable, 3-dimensional stereo imaging
This usually requires reasonable symmetry within the room, and
a bit of space between the speakers and adjacent side walls (to
minimize the adverse effects of early first reflections). Mono
(correlated) pink noise can help here, though it does not replace
listening to music. With pink noise playing in both speakers, you
should hear a tightly-defined little “ball” of pink noise floating in
space exactly halfway between the speakers.
• Smooth, consistent bass
Oft-cited rules of thumb for smoother bass reproduction include
both “placing the speakers at different distances from the side
walls vs. the wall behind them,” and “placing them at ‘odd frac-
tions’ of the room’s dimensions” (e.g., fractions in which the
denominator is an odd number, like
1 ⁄
3
, 2 ⁄
5
, 2 ⁄
7
, etc.). But nothing
replaces your experience in your room, combined with your deal-
er’s experience in a variety of rooms. Playing pink noise through
the woofer sections of your Wisdom Audio speakers (with the mi-
crophone at the listening position, and prior to doing any equal-
ization) and watching the results on a Real Time Analyzer (RTA)
will let you see the results of your labors.
• Center channel height
Once you have a solid stereo image up front (when listening only
to the Left and the Right speakers), you need a center channel
speaker for multichannel reproduction. It should be centered be-
tween the Left and Right, and centered on the screen’s location,
preferably at the same height as the Left and Right speakers. This
presents an obvious problem: you cannot place a speaker in front
of your television screen. One solution is to locate it behind an
acoustically transparent front projection screen. Apart from such
an arrangement, try to minimize the change in image height as a
sound is panned across the front stage.
• Surround channel geometry
In a 5.x channel system, the surround should be placed either di-
rectly to the sides of or slightly behind the listening area (90°–115°
from the center channel, as seen from above). In a 7.x system, the
surround speakers should be closer to 90° from the center speak-
er, and the surround back speakers should be at approximately
130°–150° from the center speaker. This conforms to industry
standards, and ensures that you hear what was intended from a
spatial placement point of view. (Too often, the surround speakers