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When all audio, video and system con-
nections have been made, a few more
adjustments are necessary. 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 multi
channel home theater system can have
a noticeable impact on the quality of
sound reproduced. For Home THX opera-
tion it is recommended that the speakers
carry the certification mark of Lucasfilm
Ltd.'s Home THX Division. However, with
careful selection and placement, the
AVI250 will deliver accurate reproduction
with any high quality speakers.
No matter which type or brand of speak-
ers are used, the same model or brand of
speaker should be used for the front left,
center and right speakers. This creates a
seamless front soundstage, and elimi-
nates the possibility of distracting sonic
disturbances that occur when a sound
moves across mis-matched front channel
speakers.
For the most accurate and exciting
reproduction of bass frequencies a sepa-
rate subwoofer should be used. When
THX Certified front channel speakers are
used, a separate subwoofer is mandatory,
as THX front and center speakers are not
designed for extreme low frequencies.
System Configuration
15
The AVI250 may be used with either
conventional (point source) surround
speakers or with THX Certified diffuse
surround speakers. No adjustment is
needed to select the type of surround
speaker used.
Speaker Placement
For best imaging, it is recommended that
the center channel speaker be placed in
line with the left and right speakers. It
should be placed above the center of TV
monitor or rear screen projector, with the
speaker as close to the top of the screen
as possible. If possible, adjust all front
speakers to aim at ear height when seat-
ed in the listening position. Once the
center speaker is positioned, adjust the
height of the left and right speakers so
the tweeter of those speakers is no more
than 60 centimeters off center from the
tweeter on the center channel speaker.
Note that many THX Certified speakers
must be placed vertically, while others
may be placed horizontally. Consult the
instruction manual accompanying your
center speaker for the correct mounting
position.
HSIT
Center Front Speaker
Left Front
| Right Front
Speaker
Speaker
A) Front Channel Speaker Installation
with Direct View TV Sets or Rear Screen
Projectors
Left
:
- |
Right
Front |
Front
Speaker
:
Speaker
No more
than
60cm
L
et
nt
Speaker
B) Front Channel Speaker Installation with
Non-Perforated Front Projection Screen
¢-
Left Front
Speaker
Center Front
Speaker
Right Front
Speaker
C) Front Channel Speaker Installation with
Center Speaker behind a Perforated Front
Projection Screen
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