Genesis 1.2 User Manual

Ver 1.0
28
~ÄëçäìíÉ=ÑáÇÉäáíó
frequency response of the woofer anechoically flat to the lowest
frequencies.
5.5 The Woofer Tower
The Genesis 1.2 features a total of twelve horizontally-opposed 12-
inch woofers per channel mounted in a 7ft 3in tall tower operating in
unison to control the air mass of the listening room. This means that
the surface area of the twelve cones and the large enclosure all work
together in unison to produce bass output that descends evenly to
below your hearing limits.
Each pair of woofers are housed in a separate chamber, and driven
by a single 500W bass amplifier. The opposed woofers eliminate
cabinet shake and vibration, and lower cabinet boxy colorations to
vanishing levels.
The woofers used in a servo system must be strong enough to
withstand the high-current approach of the servo amplifier, and yet
delicate and light enough to react extremely quickly. The woofers are
a uniquely designed metal-cone driver made for the Genesis servo
system.
While the servo system is able to ensure that the driver works linearly
as a perfect piston, it is unable to correct for distortion caused by cone
wobble, bending, and break-up. Hence, the drivers were designed to
minimize these non-linear distortions, allowing the servo system to
achieve maximum accuracy.
Made of a cone of solid aluminum, the suspension and voice-coil have
been maximized for long, distortion-free excursion so as to increase
dynamic range. Our aluminum cones are a magnitude stiffer than
plastic or paper cones, and virtually eliminate the problems caused by
cone bending and break-up.
The lowest break-up mode (where there can be any chance of
distortion at all), is at 3,600Hz – far above the 16Hz to 140Hz
frequency range at which these woofers operate. Therefore, the driver
is a perfect piston within the frequencies used.
5.6 Servo-controlled Amplifier/Crossover
The servo system places extraordinary demands on the amplifier
because the system uses enormous amounts of current to make the
woofer follow the input signal. Combined with the metal cones, this
means that the amplifier used must deliver extraordinarily large
amounts of clean power.

Genesis 1.2 Specifications

Audio Specifications

frequency response	16Hz to 36kHz, +/- 1dB
sensitivity	91 dB 1 watt 1 meter
input impedance	4 ohms (nominal)
bass amplifier power rating	Six channels per side @400 watts each

Transducers

HF transducers	26 Genesis 1” Circular Ribbon Tweeters (20 front, 6 rear)
midrange transducer	Single 75” Ribbon
LF transducers	Twelve Genesis 12” woofers with ribbed aluminum cones

Weight and Dimensions

weight per side	approx.1, 000 lbs (450kg)
mid/tweeter wing dimensions	H 90” x W 41.5” x D 5” each
woofer tower dimensions	H 90” x W 15.5” x D 19” each