Location
Here is a neat trick to find the best
subwoofer location for your room:
1.
Start
by placing it right
on
the seat
of your favorite couch or easy chair.
(This method is odd, but it is based
on
principles
of
acoustic physics).
2.
If
the subwoofer is part
of
a Home
Theater system you can use the
calibration test tone (pink noise)
usually found
in
the processor/
receiver's setup menu; or you can
simply
plug
the outputs from a
CD
player directly into the subwoofer's
line-level
inputs, remembering to
turn down the volume level on the
subwoofer first, and then play-
ing some
of
your favorite music
samples containing heavy bass.
3.
Walk
around the room listening.
Stand
in
all
the locations where
you might place the subwoofer. Try
crouching down, particularly
in
the
corners. Find the place where the
subwoofer's bass output sounds
the loudest.
4.
Turn off the subwoofer and discon-
nect it from the power and from
your processor/receiver or CD
player. Next, install
the subwoofer
in
the location you have just deter-
mined is best and remake
all
your
connections.
Although
low
frequencies are non-di-
rectional, factors such as room reflec-
tions, standing waves, resonance and ab-
sorption
will strongly affect your subwoof-
er's performance. Moving the subwoofer
from one location to another can have a
major effect
on
the bass response.
Magnetic
Fields
Remember to keep the subwoofer
at least two or three feet away from
any TV screen, computer, VCR or
magnetic tapes and discs. This
will
reduce the chance
of
the magnetic fields
upsetting the TV screen or erasing your
magnetic media.
Using two Subwoofers
If you wish to use two subwoofers, the
sound output
will
double (an increase
of
6 dB). Locate the subwoofers with one
in
each corner and experiment with the
location and phase control to achieve the
best bass response.
Always drive each subwoofer through
the
left
line-level input even though you
are driving one subwoofer with a right
channel drive and the other with a left
channel drive.
If
your preamplifier has a
single sub/LFE output, use a
Y cable to
split it into two outputs.
1 Q
--"'*-----------------------
Surifjre
User's
Manual
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