Atlantic Technology 642 SB Manuel d'instruction - Page 5
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Instruction Manual
Features
Your Atlantic Technology powered subwoofer has been engineered using
the latest technology and finest components available. It features:
A long-throw 1" composite cone driver with a vented 9-pound
motor structure and " high temperature, 4-layer voice coil.
This powerful driver has a very stiff cone that acts like a piston
throughout its operating range. Its massive magnetic motor assem-
bly and high temperature component parts deliver exceptional per-
formance and reliability.
Sealed enclosure design for low distortion and deep bass output
Sealed enclosure woofer designs are inherently low in distortion, and
deliver deep smooth bass response with a gradual and predictable
roll-off below resonance. As with all Atlantic Technology subwoofers,
we have paid close attention to providing accurate musical bass repro-
duction along with terrific special effects.
A high-efficiency 300 watt amplifier
This 642 SB utilizes the latest in amplifier technology . The output
stage is capable of very high current delivery with maximum effi-
ciency for exceptional driver control and cool operation. As a custom
designed amplifier it has been precision matched and equalized to our
12" driver. Together they deliver powerful, controlled bass with great
articulation and authority.
A useful in room working frequency range of 0Hz to 150Hz
Many subwoofers offer specifications that look great on paper, but in
real world use deliver less than promised. Atlantic Technology sub-
woofers are over-designed to ensure that they will deliver their rated
performance in your room, when properly placed and adjusted.
An adjustable (40Hz to 140Hz) @ 18dB per octave LowPass crossover
The steep upper end roll-off slope of 18dB per octave allows for much
better bass integration with the satellite speakers while making the
woofer less localizable.
NOTE: If you are using a surround Processor/Receiver that includes
its own filtered subwoofer output (or a THX Certified Processor/
Receiver), we strongly recommend that you set the 642 SB cross-
over control to the Bypass position.
Two low level inputs, two low level outputs
The outputs allow daisy chaining of multiple subwoofers, or as a
return path back to the processor.
A Phase Invert switch (Normal/Invert)
This switch allows precise acoustic matching with satellite speaker
systems whose output may be phase reversed. This switch also allows
you to compensate for unusual room acoustics that occur when the
woofer is physically separated from the main speakers. Be sure to try
the Phase switch in both positions when you set up the 642 SB. Even if
you've simply changed the built-in crossover settings it' s a good idea to
try the Phase switch in both positions, since the crossover control and
the Phase switch acoustically interact with each other. Pay particular
attention to the transition of bass from the woofer to the satellites, lis-
tening for smooth and well defined bass throughout the range.
A convenient front panel mounted Level Control
Automatic standby operation, LED indicator
Automatic standby features signal sensing turn-on with 7-10 minute
turn-off delay. There's a front panel multi-color LED status indica-
tor that lets you know when the unit is on or in standby. Automatic
Standby can be defeated by placing the rear mounted switch in the
ON position.
An AC cord power input socket.
Your subwoofer comes supplied with a heavy-duty detachable power
cord.
Designed and built to meet all current UL/CSA and European
safety requirements
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Features