You often hear the term “subwoofers are non-
directional.” This is not true. It is harder to choose
subwoofer placement when low frequencies are
crossed. The wider the room, the more directional the
subwoofer. The easiest solution is to use two (2)
subwoofers, feed a mono signal to both and place
them in the front, one on the left and another on the
right.
While having two (2) subs is better than one, the
MONO signal that drives those subwoofers keeps
them from projecting the three dimensional images in
the sub-harmonics. Using two (2) subwoofers allows
you to cross the subs up to 150Hz sound quality,
imaging and staging. In some applications, you might
have small front speakers or planar speakers. The
two-front-subwoofer system is an excellent solution
to planar speakers’ low frequency response early roll
off from 150Hz on down. When placing these
subwoofers in a close proximity to the stereo satellite,
the subs will enhance low frequency extension. It will
be better to have a stereo subwoofer to help in the
lower bass notes and their placement.
Suppose you have only one (1) subwoofer in the
room and it is placed on the right side of the room. If a
bass guitar player was standing on the left side of the
stage and played an EE note (42Hz), then the sub will
also respond to that from the right side of the room
and completely destroy the stage.
You will see illustrations showing the two (2) different
suggested setups. In each of them, note the
breakaway and the image separation represented by
the black and gray arrows.
The black arrows represent the
subharmonic frequencies.
The gray arrows represent the lows,
mids and highs as they follow the
action.
T h e b e s t r e s p o n s e i s a c h i e v e d w h e n t h e
s u b h a r m o n i c f r e q u e n c i e s a r e d y n a m i c a l l y
synchronized with the rest or the audio system, the
black and gray arrows are identical.
Single Subwoofer Setup
This is a GOOD setup. The subharmonic frequencies
(black arrow) always move towards the sub in the
single sub setup while the lows, mids and highs (gray
arrow) follow the action.
Placing the subwoofer in the corner of the room will
produce a more boomy effect, often preferred for
movies and sound tracks. For a music application,
place the subwoofer as shown above or against the
front wall, about a third of the room width.
Dual Subwoofer Setup with Mono
Signal
This is a BETTER setup. In a dual subwoofer setup,
the subharmonic frequencies (black arrow) always
move towards the middle of the room while the lows,
mids and highs follow the action (gray arrow).
Notice the breakaway and image separation is less in
this setup than the single subwoofer setup.
Placing Your Subwoofer(s)
Specifications are subject to change without notice.
MiniMe P63 Manual 9
