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Models 451 LR, 453 C, and 454 SR
Atlantic Technology
®
you get a good stereo image, but not so far apart that the sound seems distant and distracting. Avoid
placing the speakers too close to a corner or too close to the TV, and try to maintain an equal distance
from the screen on both sides. Ideally, the acoustic center of the speaker (the tweeter) should be within
two feet of ear level when you are in a seated position.
Figure 3:
Typical arrange-
ment for speakers
in a THX home
theater. For best
results, place the
surround speakers
within the shaded
areas. Note that
the surround
speakers are
marked
Left
and
Right
. It is
important that the
speakers be placed
correctly for proper
imaging
Null point of surround
speaker in line with
listening position
Center channel should be within
2' of front speaker tweeter height
Surround
speaker
should be
no closer
than 2' from
the ceiling
Ear level
The degree of front speaker toe-in can affect the imaging and response characteristics of the speakers.
In most rooms, the speakers will work well facing straight ahead or slightly toed-in towards the
listener. Speakers that are placed close to the side walls may require additional toe-in to avoid a poor
image and/or a forward midrange and treble response due to reflections from the side walls. Play some
two channel stereo music and experiment with speaker positioning.
Note:
If the speakers need an excessive amount of toe-in to image properly, there may be a problem with the
connection of the speakers or some part of the system may not be operating properly. Check all of your
speaker wire connections for correct phase and verify that the associated components in the system are
connected and functioning properly.
The
Model 453 C Center Channel Speaker
should be between the left and right front speakers and
above or below the TV screen. It should be tilted on its adjustable base to direct the sound toward the
listening position. Ideally, the center channel speaker should be placed within two feet of the axis of
the front channel tweeters. This placement is somewhat flexible because of the directability of the 453
C on its tiltable base. The 453 C is usually placed on top of the TV, or above or below the screen in a
front projection video system.
Left surround
speaker
Right
surround
speaker
