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Atlantic Technology
®
Figure 3:
Typical arrange-
ment for speakers in
a home theater. For
best results, place
the surround
speakers within the
shaded area. 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
Left surround
speaker
Right
surround
speaker
Ear level
Operation of the HI FREQ LEVEL Control
The HI FREQ LEVEL control works like a treble tone control, giving you more or less high frequency
output from the speaker. You can compensate for overly bright soundtracks or “punch up” a dull
soundtrack. Turning this control clockwise increases the high frequency level; turning
it counterclockwise reduces it. The HI FREQ LEVEL control also allows you to adjust
the overall sonic balance of the 173 C to more closely match the LR speakers even
though the 173 C is placed directly above or below the TV screen. It may be best to use
the test tone built into your receiver to adjust the overall sound of the 173 C to match
the LRs once the speakers are placed in their proper locations.
Note: Some surround sound decoders and receivers offer a choice of “Normal” or “Wide-band” modes for
the center channel. The Model 173 C was designed to be used in the Normal mode. Additionally, some
discrete digital home theater systems allow Bass Management, letting you select between “Small” and
“Large” speakers system-wide. Since System170 is designed to work with a subwoofer, please set all the
speaker positions to Small.
Surround Effects
The 174 SR’s size and shape allows greater flexibility in placement than most conventional surround
loudspeakers. Due to their dipole design’s spatial characteristics, it is possible to place the speakers
almost anywhere within the rear third of the room, but usually the best location is straight out to the
sides of, or slightly behind the primary listening area, approximately 1-2 feet above ear level.
Note: Surround speakers are intended to re-create the ambient sounds in a movie scene. Throughout most of
a movie or TV program you may not be directly aware of the surround speakers presence. So it’s OK if you
aren’t aware of hearing the surround speakers directly. Turning the surrounds up so that you hear them all
the time will only result in a much less believable surround sound experience. Remember that the signal they
receive is 99% subtle sounds that should make you believe you’re in the action up on the screen.
Figure 4:
Hi-Freq Level
Control on rear
panel of the
Model 173 C.