Owner`s manual

3
SPEAKER PLACEMENT
Low-frequency sounds are
normally omnidirectional, meaning
the listener can’t tell where they
are generated from. However,
frequencies between 75Hz and
150Hz can be localized, especially
at higher volume levels. Position-
ing your subwoofer as recom-
mended will provide the most
natural soundstage and imaging
from your loudspeaker system.
It is generally recommended that
you install your AAS88 in-wall
subwoofer along the same wall as
the front loudspeakers. The AAS88
subwoofer is not video-shielded
and should not be placed near a
video display. Installing the AAS88
near a corner will tend to maxi-
mize low-frequency output. Be
cautious when installing in a cor-
ner, to avoid a “boomy” sound.
Also take into consideration any
unusual features of the room,
such as an alcove, which may
tend to create a localized node
that may affect bass response in
that area of the room.
It is generally recommended that
the speaker be installed so that
the bottom of the speaker is
approximately 12" from the floor.
This is to help with the low-fre-
quency loading (bass reinforce-
ment). This also helps hide the
speaker in a less visible place.
In special circumstances, it is
acceptable to install the speaker
at any height on a wall.
Remember that these are just
guidelines. Since every listening
room is different, Audioaccess
strongly recommends experiment-
ing with the positioning of your
subwoofer prior to cutting the
wall to obtain the most pleasing
results in your room. One tech-
nique that can help you find the
ideal subwoofer location is to
temporarily borrow a stand-alone
subwoofer and place it near the
main listening location. Then
move around the room and deter-
mine where you hear the most
pleasing bass performance. This
would then be the ideal location
for the subwoofer.
When using two AAS88 in-wall
subwoofers, you may need to be
concerned about phase, as the
sound waves may cancel each
other out. If bass response seems
low, try inverting the polarity on
one subwoofer – i.e., connect the
(+) terminal on the amplifier to
the (–) terminal on the speaker,
and the (–) terminal on the ampli-
fier to the (+) terminal on the
speaker.
JBLP1948-AAS88 OM 5/26/05 3:58 PM Page 3