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Introducing
The New The Digital Drive™ Series Subwoofers
Since the introduction of the first High Gain Servo system
in 1983, Velodyne's servo-controlled subwoofers
have defined -- and redefined -- the reference in low-frequency performance.
Twenty years after Velodyne's introduction of the
world's first low-distortion, high definition subwoofer, Velodyne
now introduces a new revolution in subwoofer design -- the first
microprocessor-controlled all-digital subwoofer.
The Digital
Drive™ Series consists of four
totally new digital subwoofers - the DD-10 (10" driver, 8" piston
diameter), the DD-12 (12" driver, 9.7" piston diameter), the DD-15
(15" driver, 12.7" piston diameter), and the DD-18 (massive 18"
driver, 15.2" piston diameter). Built to be as small as physically
possible, they still deliver musical accuracy and visceral, ultra-low bass
that you actually feel. Digital Drive™ subwoofers raise the standards by
which subwoofers are measured to a new high.
Concepts
and Goals
The first major challenge
to accurate subwoofer performance is over-coming shockingly high levels of
distortion that make most subwoofers muddy, boomy,
and lacking in definition and clarity, especially at higher playback levels. Velodyne's patented accelerometer-based High Gain Servo
(HGS) technology, used initially in the ULD Series and later in the HGS
Series subwoofers, lowers distortion at all frequencies and playback levels
to less than 1%. This technology established Velodyne
subwoofers as the benchmark by which all others have been measured over the
past 20 years.
Another often
overlooked factor that dramatically affects a subwoofer's performance is how
the room's shape, size, and appointments impact the reproduction of the audio
spectrum. The room always creates anomalies in the subwoofer's frequency
response, and can wreak havoc in the interaction between the subwoofer and
the main speakers. Unfortunately, this phenomenon is little understood and
worse, requires extensive additional technology and training to understand
and correct. For the first time, Velodyne's Digital
Drive™ Series subwoofers can
display these room anomalies visually and provide the tools to correct them,
allowing you to optimize the sub's performance regardless of its position,
where in the room you listen, and the room's shape and size.
Room Management
Technology: The Digital Drive™

Digital Drive™ Series subwoofers
feature Velodyne's new, revolutionary Digital Drive™ room management
technology. This latest Velodyne innovation allows
the subwoofer's frequency response to be measured using a calibrated
microphone and viewed graphically on any standard TV. The on-board 8-band
digital graphic/parametric equalizer can be used to optimize the subwoofer's
performance for any position in any room. Additionally Digital Drive™ subwoofers also offer
complete control over crossovers (both subsonic and low pass), slopes, phase,
and polarity, which allows perfect matching of the subwoofer to any speakers
in any environment. All Digital Drive™ subwoofers come complete with a
microphone, cables, and remote.
You've probably heard that room placement is an important
factor in subwoofer performance. Digital Drive™
technology allows you to actually see the response for any sub location and
listening position you may choose. And, if your room placement options are
limited, you can be sure that the location that is chosen will be optimized
for maximum performance.
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Presets: A Musical and a
Theatrical Subwoofer All In One
All Digital Drive™ subwoofers come preprogrammed with four listening mode
"presets" for Action Adventure, Movies, Rock/Pop, and
Jazz/Classical. There are also Custom, and EQ Defeat
presets. Each preset can be totally customized for crossovers and phase,
feature an "extra" equalizer, and can have their volume set
differentially from the system volume. Each preset also has a "theater/music" setting that allows the sub to play
louder (e.g. for movies) or tighter (e.g. for music) depending on the source
content. No more compromise between a "musical" sub and a
"theatrical" sub! The theater/music
selection by preset is another of the many firsts in the Digital Drive™ Series.
Microprocessor
Controlled
Digital Drive™ subwoofers are
controlled by a computer chip from Texas Instruments®. All video
and audio processing is controlled by this chip. The unit can be commanded
via RS-232 port by universal remotes such as from Crestron
- another Digital Drive™ first. Multiple Digital Drive™ units can be daisy chained
together and controlled from one source. The software for Digital Drive™ subwoofers
can be updated from Velodyne's web site, so you
will always have access to new features incorporated into later designs.
Cone
Control Technology: Digital High Gain Servo™ System
Velodyne engineers further increased the accuracy and
lowered the distortion of the Digital Drive™ Series by including the latest
generation of Velodyne's patented High Gain Servo™ system. This technology
uses a proprietary, sealed, digital accelerometer to measure, compare and
control cone movements 16,000 times a second (up from the 3,500 times per
second featured in the HGS Series) in order to correct for any distortion.
This provides the highest definition and lowest distortion available (as low
as .5%). The result is the ultimate in subwoofer accuracy and impact.
Amplifier
Technology: The Digital Energy Recovery Amplifier™
Conventional (Class A/B) amplifiers convert about 50% of
the energy they draw into output, making them too inefficient to generate the
tremendous power needed for a truly high performance subwoofer. Velodyne's patented Energy Recovery Amplifier™, a transformer-less
Class-D Digital design, is the most efficient audio amplifier ever built. At
better than 95% efficiency, it is limited only by the power it can draw from
a wall outlet! Using 1250 watt RMS (over 3,000 watts of Dynamic power) Energy
Recovery Amplifiers™, Digital Drive™ subwoofers incorporate more usable power than any
subwoofer in history except Velodyne's own
Signature 1812.™

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Driver
Technology: Dual Tandem Voice Coil and Kevlar-Reinforced Cones

The drivers used in the Digital Drive™ Series provide
extremely high power handling with less than half the distortion of
conventional designs. These innovations center on the driver's revolutionary
Dual Tandem Voice Coil, which is 3" in diameter and over 6" in
length, ensuring over 1-1/4" of excursion. The huge magnet structure and
2-layer aluminum clad copper wire provides high
power handling capacity and linear motion. In addition, all DD drivers
feature incredibly light, stiff, low resonance Kevlar-reinforced cones,
custom designed variable thickness EPDM surrounds and custom die-cast aluminum baskets.
Cabinet Design
These massive drivers and
the corresponding electronics are housed in a new state-of-the-art,
computer-designed cabinet. Striking to look at in real maple or cherry
veneers, or in lustrous black lacquer, the cabinet has been engineered to
eliminate resonance and create stability. Finally, a set of milled aluminum, acoustically-isolated feet are included on the
DD-15 and DD-18, while a set of rubber isolating inverted cone feet are included
on the DD-10 and DD-12.
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The
Digital Drivetm Series Specifications
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Model Number
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DD-10
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DD-12
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DD-15
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DD-18
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Cabinet (H/W/D) (inc. feet)
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11.75" x 11.75" x 13.5"
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14.5" x 14" x 15.5"
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20" x 18" x 17.75"
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23" x 21.25" x 19.25"
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Frequency Response
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18 Hz to 120 Hz +/-3 dB
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17 Hz to 120 Hz +/-3 dB
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15 Hz to 120 Hz +/-3 dB
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14 Hz to 120 Hz +/-3 dB
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Harmonic Distortion
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<1% (typical)
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<1% (typical)
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Less than 0.5% (typical)
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Less than 0.5% (typical)
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High Pass Crossover
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80 Hz at 6 dB/octave
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80 Hz at 6 dB/octave
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80 Hz at 6 dB/octave
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80 Hz at 6 dB/octave
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Low Pass Crossover
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15 Hz to 199 Hz (variable in 1 Hz increments)
6/12/18/24/30/36/42/48 dB per octave slope (variable) Default: 80 Hz @ 24
dB/octave
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15 Hz to 199 Hz (variable in 1 Hz increments)
6/12/18/24/30/36/42/48 dB per octave slope (variable) Default: 80 Hz @ 24
dB/octave
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15 Hz to 199 Hz (variable in 1 Hz increments)
6/12/18/24/30/36/42/48 dB per octave slope (variable) Default: 80 Hz @ 24
dB/octave
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15 Hz to 199 Hz (variable in 1 Hz increments)
6/12/18/24/30/36/42/48 dB per octave slope (variable) Default: 80 Hz @ 24
dB/octave
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Subsonic Filter
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15 Hz to 35 Hz (variable in 1 Hz increments)
6/12/18/24/30/36/42/48 dB per octave slope (variable) Default: 15 Hz @ 24
dB/octave
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15 Hz to 35 Hz (variable in 1 Hz increments) 6/12/18/24/30/36/42/48
dB per octave slope (variable) Default: 15 Hz @ 24 dB/octave
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15 Hz to 35 Hz (variable in 1 Hz increments)
6/12/18/24/30/36/42/48 dB per octave slope (variable) Default: 15 Hz @ 24
dB/octave
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15 Hz to 35 Hz (variable in 1 Hz increments) 6/12/18/24/30/36/42/48
dB per octave slope (variable) Default: 15 Hz @ 24 dB/octave
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Phase
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0 to 180 degrees (variable in 15 degree increments)
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0 to 180 degrees (variable in 15 degree increments)
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0 to 180 degrees (variable in 15 degree increments)
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0 to 180 degrees (variable in 15 degree increments)
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Polarity
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Adjustable (+/-)
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Adjustable (+/-)
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Adjustable (+/-)
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Adjustable (+/-)
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Amplifier (Class D)
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1250 watts RMS
(3000 Peak)
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1250 watts RMS
(3000 Peak)
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1250 watts RMS
(3000 Peak)
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1250 watts RMS
(3000 Peak)
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Woofer (Forward Firing)
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10" (8" piston diameter)
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12" (9.7" piston diameter)
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15" (12.7" piston diameter)
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18" (15.2" piston diameter)
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Magnet Structure
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310 ounces (19.3 lbs)
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310 ounces (19.3 lbs)
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380 ounces (24 lbs)
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380 ounces (24 lbs)
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Voice Coil
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Tandem 3-inch push-pull
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Tandem 3-inch push-pull
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Tandem 3-inch push-pull
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Tandem 3-inch push-pull
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Inputs
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-
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-
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-
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-
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LFE (Mono)
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Line Level (RCA),
Balanced (XLR)
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Line Level (RCA),
Balanced (XLR)
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Line Level (RCA),
Balanced (XLR)
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Line Level (RCA),
Balanced (XLR)
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Input (L&R)
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Line Level (RCA)
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Line Level (RCA)
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Line Level (RCA)
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Line Level (RCA)
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Microphone
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Balanced (XLR, cable included)
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Balanced (XLR, cable included)
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Balanced (XLR, cable included)
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Balanced (XLR, cable included)
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Speaker Level (L&R)
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Bare wire, banana plugs, or spade lugs.
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Bare wire, banana plugs, or spade lugs.
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Bare wire, banana plugs, or spade lugs.
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Bare wire, banana plugs, or spade lugs.
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Outputs
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-
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-
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-
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-
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Thru (L&R)
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Line Level (RCA)
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Line Level (RCA)
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Line Level (RCA)
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Line Level (RCA)
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Output (L&R)
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Line Level (RCA)
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Line Level (RCA)
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Line Level (RCA)
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Line Level (RCA)
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EQ Output
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Line Level (RCA) for Test Signal L/R and Video (cables included)
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Line Level (RCA) for Test Signal L/R and Video (cables included)
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Line Level (RCA) for Test Signal L/R and Video (cables included)
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Line Level (RCA) for Test Signal L/R and Video (cables included)
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Warranty
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Two Years
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Two Years
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Two Years
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Two Years
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