Atlantic Technology 4400 SR - Manual (Page 8)

8
System 4400 High Performance Loudspeakers
Boundary Compensation Use this switch to adjust
the lower frequency output of the speaker to com-
pensate for the typical sound colorations caused by
placing the speaker close to a TV screen or building
it into a wall unit or cabinet. To set these controls, sit
in the prime listening position and have someone
switch between the compensation choices, using well recorded dialogue or
musical instrument recordings. Choose whichever switch position sounds
most natural and real to you.
NOTE: Although these controls have been designed to compensate
for various acoustic room anomalies, we recommend that you try
them to hear the difference that they make in the sound of the sys-
tem. For any number of reasons, you may decide that you prefer them
set in a particular manner inconsistent with your room’s acoustics,but
which sounds best to you. Experiment. It will be worth it.
Dipole/Bipole Operation of the SR Speakers
In Dipole mode the 4400 SR’s produce ambience with minimal local-
ization (best for most mov-
ies and video soundtracks),
and more localizable sound
in the Bipole mode (preferred
for some music recordings).
Switching between Dipole and
Bipole mode is easily accom-
plished using a toggle switch
conveniently located under one of the speaker’s grilles. Please note that the
vast majority of the time in movies and TV broadcasts the surround speak-
ers are called upon to reproduce the environmental sounds that are used as
cues to help get you immersed in the scene on the screen.
Once the surround speakers are properly positioned in the listening area,
we recommend that you begin with the dipole mode, as this usually deliv-
ers the most involving and believable surround performance in most situ-
ations. However, as noted above, feel free to experiment with both switch
positions.
When using as front "height" speakers, we recommend starting in the
Bipole mode.
System Setup
System Setup
Bass Management
Some older surround sound decoders and receivers offer a choice of “Nor-
mal” or “Wide-band” modes for the center channel speaker. The Model
4400 C is designed to be used in the Normal mode. Additionally, digital
processing multi-channel systems provide a Bass Management menu, which
typically requires you to select between “Small” or “Large” speakers during
system set-up. Since these systems have been designed to work with a dedi-
cated subwoofer, please set all the speakers in System 4400 to Small.
HF ENERGY
REVERBERANT
BOUNDARY
COMPENSATION
ON
DAMPED
ROOM
AVERAGE NORMAL
4400 LR
Front Channel Left or Right Speaker
SERIAL
POWER: 10-150W 8 OHMS NOMINAL
IN
PU
T INP
UT
Operation of the Rear Panel Controls
on the LCR Speakers
High Frequency Energy This control changes the tilt
or roll-off slope of the tweeter. It has been designed
to help compensate for different room acoustics. The
THX/ Average position is intended for rooms with
a reasonable combination of reflective (hard) and
absorptive (soft) surfaces. The Reverberant position
is designed for rooms with an abundance of reflective surfaces like hard-
wood or tile floors, glass walls, etc. It decreases the high frequency output
of the speaker to reduce excess HF energy that builds up in live rooms. The
Damped position brings the tweeter’s output slightly above flat response to
compensate for overly absorbent rooms with lots of soft surfaces. Speak-
ers in overly damped rooms can sound dead and lifeless unless compen-
sated.
DIPOLE BIPOLE
Figure 4
HF ENERGY
REVERBERANT
BOUNDARY
COMPENSATION
ON
DAMPED
ROOM
AVERAGE NORMAL
4400 LR
Front Channel Left or Right Speaker
SERIAL
POWER: 10-150W 8 OHMS NOMINAL
IN
PU
T INP
UT
HF ENERGY
REVERBERANT
BOUNDARY
COMPENSATION
ON
DAMPED
ROOM
AVERAGE NORMAL
4400 LR
Front Channel Left or Right Speaker
SERIAL
POWER: 10-150W 8 OHMS NOMINAL
IN
PU
T INP
UT