Genesis G-928 Brochure
absolute fidelity
G-928
Seamless integration with your system.
Perhaps the greatest impediment to fully enjoying a subwoofer’s contribution, with both music
and fi lm sources, lies in how the woofer system
mates with a variety of wide-range loudspeakers.
Combining fi rst-rate musicality and exceptional
delivery with bottom-end solidity and power,
the G-928 accomplishes this task with ease. It
is distinctly designed to perform equally well
in high-impact home theaters as well as music
systems that demand subtlety and precision. A
fully adjustable low pass fi lter and volume control
allows precise selection of optimum settings for
level matching and accurate integration with any
music or home theater system.
The Genesis story.
Arnie Nudell founded Genesis in 1991.
Although a man of science with a Masters Degree in Nuclear Physics, Arnie was also trained
as a classical musician. As such, he recognized
the emotional hold that music can exert over the
listener and the indispensable role it plays in our
lives.
With his love of music and his technical skills
©2003 Genesis Advanced Technologies All specifications subject to change
he set out to create ever more perfect audio transducers to bring to life the ultimate re-creation of a
live musical experience.
Today, Arnie Nudell continues to refi ne the
vision of recreating live music in the home environment by constantly rethinking the basics; how
time and space signifi cantly affect what we hear;
how exotic materials and confi gurations can affect enclosure and transducer performance; and
how the sound of a live classical concert differs
from the sound from any loudspeaker he has ever
heard.
With the introduction of the Genesis One
Loudspeaker System, the company set new
world standards in sonic performance. Today, all Genesis Advanced Technology audio
products are empowered with this ability to
resolve the lowest level detail with the same
articulation and imaging that exists at in our
fi nest models. Thus, you can enjoy the same
quality of detail and energy from the softest
whisper to the loudest roar of a dinosaur.
Genesis Advanced Technologies G-928
Frequency Response 20Hz to 120Hz, ± 1dB
16Hz to 180Hz –3dB, +2dB
LF Transducers two 12” metal-cone woofers
Controls Variable low pass fi lter
Variable gain control
Amplifi er Power Rating 1000 watts peak
Inputs High-level left and right
(3-way binding posts)
Low Level left and right (RCA)
LFE low-level mono (RCA)
Output LFE low-level mono (RCA)
Input Impedance 33K ohms
Dimensions H 16.5” x W 17” x D 15.75”
Weight 84.5 lbs (38.4 kg)
Standard Finish Black Ash
Special Order Finishes Koto Satin Black, Rosewood
hen fi nesse
W
meets brute force.
When there is a need
for power handled with
a decorum and delicacy,
the Genesis G-928
Servo-Subwoofer
comes through.
With its 1000-watt
Class-D switching
amplifi er and servo
control, the Genesis
G-928 excels in delivering prodigious
output capability with
unparalleled delicacy
and articulation in an
enclosure small enough
to be virtually invisible,
even in the most austerely furnished room.
Servo-Driven
Subwoofer
absolute fidelity
4407 6th Ave. NW • Seattle, WA 98107 USA • 206.789.3400 • www.genesisloudspeakers.com
G-928
t combines fi rst-
he Genesis G-928 Servo-Subwoofer was
T
created using several refi ned technologies — servo-control, metal cone drivers and
effi cient, hyper-linear switching (Class D) amplifi cation — which makes it able to accurately and instantaneously reproduce the subtleties of a bowed double bass or the shuddering
footfalls of an angry T-Rex.
The G-928 transducers.
In contrast to the comparatively heavy or
“lossy” materials used in almost all other
woofer cones, the G-928’s dual 12-inch drivers are made of lightweight yet inherently
stiff metal. Thanks in part to massive magnet
structures and long-throw voice coil assemblies, these precisely contoured cones are free
of the transient-blurring artifacts imposed by
lesser materials. With greater radiating area
than even a 15-inch transducer, the dual 12inch cones respond instantly to input signals
to reveal details often obscured by heavier,
less responsive designs. Also, they can deliver
surprisingly substantial volume levels for
their modest size.
True Servo Control.
Inertia is the enemy of accurate low frequency reproduction. The woofer must start
instantly— and stop suddenly. However, its
inertia makes it sluggish, resulting in overhang, bloat, lack of tautness and a blurring of
dynamic impact.
Rather than simply send the woofer pulses
of power and hope for the best, the solution is
to carefully monitor the woofer’s movement
and make instantaneous power corrections to
“get it up to speed” and “stop it on a dime.”
Very few loudspeakers use servo drive, either because most designers think that it is too
diffi cult to design, too expensive, or because
of the extraordinary demands a servo system
makes on the amplifi er and woofers.
However, Arnie Nudell, Genesis’ Chief
Scientist, is more than comfortable with servo
control: he designed the servo system in the
legendary Infi nity Servo Statik One back in
1968 — and has continued to refi ne the design
using new materials and technologies.
The G-928 is the latest iteration of his
research. A precision accelerometer on the
woofer continuously monitors motion and
sends a signal to high-speed circuitry that
“
I
rate musicality
and exceptional
delicacy with a bottomend solidity and power
that was fully up to
the job of reproducing today’s dynamic
soundtracks. Transient
impact was extraordinary…bass extension
was outstanding.”
Robert Harley,
The Perfect Vision magazine
Visit www.genesisloudspeakers.com to download a complete copy of this review.
compares actual cone movement to the input signal. The comparison circuit instantly identifi es any
deviation from ideal response. Then, in real time,
it adds a corrective signal to compensate for any
deviation from the input signal even when they include complex, rapidly evolving musical bass lines
or cinema special effects.
With this constant-feedback servo control, the
transducers are essentially massless and anechoical-
ly fl at. While typical non-servo woofer systems have
distortion levels that exceed 10% at even moderate
levels, the G-928 servo bass system reduces distortion to below one percent at almost any output level.
In short, the G-928 guarantees earth-shaking
bass coupled with stunning articulation.
The G-928 power amplifi er.
The servo system places extraordinary demands
on the amplifi er since the system uses enormous
amounts of current to precisely control the woofer.
The best amplifi er for this application is a Class-D
switching amplifi er with its dynamically increased
effi ciency, especially at extreme low frequencies.
The G-928’s proprietary and ultra-effi cient Class
D, discrete MOSFET switching amplifi er is a prime
example of intelligent power application in the
service of sonic subtlety. With output capability up
to a full kilowatt of peak power, the G-928’s Class
D design provides extraordinary control and exceptional thermal stability even when playing the most
demanding sources continuously at high volume.
It is remarkably cool running, too, thanks to the
designs’ inherent 90% effi ciency (versus as low as
50% for traditional Class A/B amplifi ers).
Loading...