Velodyne Acoustics DF-10sc Speaker User Manual


 
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The Velodyne Story . . .
Founded in 1983 by David Hall,
Velodyne Acoustics is the result of an
effort to bring the discipline of me-
chanical engineering and the doctrine
of common sense to the field of high
performance audio- the Silicon Valley
approach to sound.
Through innovative thinking and
inventive design, the company pio-
neered the first true servo-controlled
subwoofers. The result was both the
reference standard for bass repro-
duction and the foundation for distor-
tion-free listening.
Rejecting the trend toward high-end
indulgence or fancy marketing gim-
micks with no relevance to improving
sound, Velodyne devoted its techni-
cal resources to bringing the benefits
of ultra-low distortion technology
within the reach of all dedicated
music lovers. In fact, many state of
the art recording studios & homes
now feature Velodyne subwoofers as
their "reference standard" by which
all others should be judged.
With the introduction of Velodyne's
Distortion Free Series for the automo-
bile, listeners finally have access to
all the details and dynamics that
make up the modern listening experi-
ence. Anything imperfect originates
elsewhere. By design, Velodyne
speakers are incapable of error.
to the amplifier. Forcing the speaker's acoustical output into a true
representation of the music.
The term "servo" is misused by some manufacturers who use a
different motor on their speakers to try and make woofers sound like
larger more powerful units. Unfortunately this usually results in a
large amount of distortion as well. At Velodyne, we take an already
large & powerful speaker, then use motional feedback to create a
true "servo" controlled speaker. This reduces distorion and achieves
a level of sound quality never before heard of.
Product Features & Controls
Rigid cast aluminum basket
Rubber surround for long excursion and durability
Rigid spun aluminum alloy cone
2-1/2" high temperature voice coil
Forced air cooling of voice coil
Gold binding posts accept large guage wire
Patented High-Gain-Servo control
Selectable subsonic filter (10 or 30 hz)
Selectable low pass crossover frequency (60 to 120 hz)
Optional bypass for low pass crossover
Remote mounted digital volume control (user adjustable)
Phase selection (0, 90, 180, 270)
Enclosure type selection; sealed, infinite baffle, etc.
Low frequency equalization circuit; to allow use with most
amps on the market
Delayed turn on/off; prevents pops & thumps
Gain compression circuit; to prevent woofer from over
excursion
Input overload protection
Thermal power sensing; protects woofer's voice coil from
burnout