woofer cone makes it slow to start moving. After it is moving, the momentum of the cone makes it continue to move after the signal has stopped.
The sonic result is overhang, bloat, lack of tautness and definition, and a blurring of dynamic impact. With the servo system, the circuit senses that the woofer is not moving as fast as it should, and it instantaneously applies much more current to make it move faster. When the signal stops, it predicts that the woofer will continue to move when it shouldn’t, and applies a counter-signal to stop the woofer faster and more effectively than an open-loop system could possibly respond.
Thus, servo-bass systems reduce distortion and improve transient response by making the woofer seem mass-less. Typical non-servo woofer systems have distortion levels that exceed 10% at even moderate levels. The Genesis servo-bass system reduces this distortion to below one percent at almost any output level. The system also drives the woofer to constant acceleration, which makes the frequency response of the woofer anechoically flat to the lowest frequencies.
4.5The Woofer Tower
Six 12” woofers mounted in a 7½ foot tall tower operate in unison to control the air mass of the entire room. This means that the surface area of the eight cones and the large enclosure all work together in unison to produce bass output that descends evenly to below your hearing limits.
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 Genesis 1.1 features a total of six front-firing 12-inch woofers per channel, each with its own accelerometer, enclosure chamber, and servo amplifier.
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.
The woofers are a uniquely designed metal-cone driver made for the Genesis servo system. 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
