Thiel Audio Products SS1 Subwoofer - Manual (Page 9)

If the subwoofer is used only for LFE reproduction, it
can be placed almost anywhere. If more than one subwoofer
is used, placing them in different locations tends to even out
possible room resonance irregularities.
If the subwoofer is used with a crossover or Integrator to
reproduce the low frequency portion of the main channels
then placement is a little more important. The subwoofer(s)
preferably should be approximately the same distance from
the main listening area as the main speakers. With one
subwoofer the best position is usually somewhere between
the main speakers but behind them a few feet if possible in
order to maintain good stereo imaging.
The use of two subwoofers allows the low frequency
signal to be processed in stereo by the crossover unit, and,
therefore to provide the best possible imaging. In this case,
it is preferable that the subwoofers be placed somewhat near
each main speaker. Good placement is anywhere from
between the speakers, near each speaker, or at the side walls.
Subwoofer Placement
9
For LFE (“point 1”) channel use, corner placement is often ideal,
providing maximum output.
Center placement against the front wall is often optimum for music or
movie systems where the subwoofer is used to reproduce left/right
channel bass. It provides high output and good “imaging”.
Dual corner placement provides maximum output from each sub,
higher total output, good “imaging” and more even room response.
Dual subs near the main speakers provide the higher output of dual
subs combined with the best “imaging” and most even room
response.
Dual subs at the side walls provide the higher output of dual subs,
high output from each sub, good “imaging” and even room response.
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Higher output is achieved when the subwoofer is placed
near a wall and even more output is available when placed
near a corner of the room. If very high output is desired in
large rooms corner placement can be used with little trade-
off in sound quality. For use in very large rooms, greater than
4,000 ft
3 , more than one SS1 may be required if very high
playback levels are desired.