15 SYSTEM CONFIGURATION
System Configuration
When all audio, video and system connections
have been made, there are a few configuration
adjustments that must be made. A few minutes
spent to correctly configure and calibrate the
unit will greatly add to your listening experience.
Speaker Selection and Placement
The placement of speakers in a multichannel
home-theater system can have a noticeable
impact on the quality of sound reproduced.
No matter which type or brand of speakers is
used, the same model or brand of speaker
should be used for the front-left, center and
front-right speakers. This creates a seamless
front soundstage and eliminates the possibility
of distracting sonic disturbances that occur
when a sound moves across mismatched
front-channel speakers.
Speaker Placement
Depending on the type of center-channel
speaker in use and your viewing device, place
the center speaker either directly above or
below your TV, or in the center behind a perfo-
rated front-projection screen.
Once the center-channel speaker is installed,
position the left-front and right-front speakers
so that they are as far away from one another
as the center-channel speaker is from the pre-
ferred listening position. Ideally, the front-channel
speakers should be placed so that their tweeters
are no more than 24" above or below the
tweeter in the center-channel speaker.
Depending on the specifics of your room
acoustics and the type of speakers in use, you
may find that imaging is improved by moving
the front-left and front-right speakers slightly
forward of the center-channel speaker. If possi-
ble, adjust all front loudspeakers so that they
are aimed at ear height when you are seated
in the listening position.
Using these guidelines, you’ll find that it takes
some experimentation to find the correct loca-
tion for the front speakers in your particular
installation. Don’t be afraid to move things
around until the system sounds correct. Optimize
your speakers so that audio transitions across
the front of the room sound smooth, and that
sounds from all speakers appear to arrive at the
listening position at the same time (without
delay from the center speaker compared to the
left and right speakers.)
Surround speakers should be placed on the side
walls of the room, at or slightly behind the
listening position. The center of the speaker
should face into the room. The speakers should
be located so that the bottom of the cabinet
is at least two feet higher than the listeners’
ears when the listeners are seated in the
desired area.
If side-wall mounting is not practical, the
speakers may be placed on a rear wall, behind
the listening position. Again, they should be
located so that the bottom of the cabinet is at
least two feet higher than the listeners’ ears.
The speakers should be no more than six feet
behind the rear of the seating area.
Subwoofers produce nondirectional sound, so
they may be placed almost anywhere in a
room. Actual placement should be based on
room size and shape and the type of subwoofer
used. One method of finding the optimal loca-
tion for a subwoofer is to begin by placing it in
the front of the room, about six inches from a
wall, or near the front corner of the room.
Another method is to temporarily place the
subwoofer in the spot where you will normally
sit, and then walk around the room until you
find a spot where the subwoofer sounds best.
Place the subwoofer in that spot. You should
also follow the instructions of the subwoofer’s
manufacturer, or you may wish to experiment
with the best location for a subwoofer in your
listening room.
