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By Ken Kessler, Robb
Report
June, 2002
The most significant new product of
the past year is a component regarded by many as a mere
add-on, not a primary part of the audio chain. However,
the role of the subwoofer has shifted from accessory to
necessity because of a decade's worth of multichannel,
home cinema sound evolution. Dolby and DTS 5.1-channel
surround technology have significantly changed our perception
of what was thought of as just a highly specialized speaker
covering only the lowest notes in the spectrum. MartinLogan's
Descent has transformed the subwoofer's contribution from
merely adding weight to a performance into playing a major
part in the overall sound.

The Descent will operate with almost
any high-end speaker. The overriding design consideration,
though, was that it had to complement MartinLogan's own
electrostatic hybrids. The stipulation made the design
an even greater challenge than creating a subwoofer for
conventional loudspeakers, because subwoofers use conventional
cone-type drivers. These drivers have the same sonic
character as the conventional drivers in most speakers.
With electrostatics, though, the behavior differs in
nearly every area of sound reproduction, and the Descent
had to reflect this by delivering cleaner, faster, and
more open sound than do most subwoofers.
"The Descent thus exhibits an unusual
ability
to blend with the primary speakers, a dexterity that
will counter any argument about the impossibility
of matching subwoofers to main speakers."
Because MartinLogan has spent the better
part of two decades working with hybrid systems—electrostatic
panels for the middle and high frequencies and a cone woofer
for the bass—the Kansas-based company has more experience
than any other in combining the two technologies. The Descent
thus exhibits an unusual ability to blend with the primary
speakers, a dexterity that will counter any argument about
the impossibility of matching subwoofers to main speakers.
The Descent's designers were so intent of creating a perfect
match not just with the system, but also with the room,
that they incorporated an extra user-adjustable control
for dialing in the correct phase. Inside the 96-pound,
six-sided Descent are three 10-inch metal-coned woofers
and a 400-watt amplifier. The package is so well controlled
and adaptable that it can operate in small rooms, even
with tiny satellite speakers, yet it is powerful enough
to provide the levels needed to serve home theaters seating
15 or more.
With an eye (and ear) to the future, MartinLogan
has announced a "baby" version of the Descent that is about
20 percent smaller. The scaled-down technology will please
users who prefer multiple subwoofer arrays or simply something
less imposing than the Descent's 22 x 20 x 19-inch frame.
"Unlike
other, typically Cubist and plain,
or even ugly, subwoofers that are available,
the Descent's styling is stunning."
Despite its adaptability and power,
the Descents greatest contribution to home entertainment
may not be its sound at all. Unlike other, typically
Cubist and plain, or even ugly, subwoofers that are available,
the Descent's styling is stunning. Case in point: Upon
spying the Descent for the first time, a woman who despises
the presence of any audio component in her home asked, "Where
did you find that gorgeous coffee table?"
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