moving and applies a counter-signal to stop the woofer faster and more effectively than an open loop woofer could possibly respond.
Thus, the servo-drive reduces distortion and improves transient response by making the woofer appear to be massless. 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.
The Woofer Tower
The transducer used in a servo system must be strong enough to withstand the high current approach of the servo, and yet delicate and light enough to react extremely quickly. The G2.2 features a total of four front- and four rear-firing 8-inch woofers per channel – a total of sixteen woofers in the 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.
The woofers are a uniquely designed metal cone driver made for the Genesis servo system. Made with a cone of solid aluminium, the suspension and voicecoil have been maximized for long distortion-free excursion so as to increase dynamic range. Our aluminium cones are a magnitude stiffer than any plastic cone on the market, and virtually eliminate the problems caused by cone bending and break-up.
The lowest break-up mode in the woofer (where there can be any chance of distortion at all) is at 6,000Hz – far above the 16Hz to 120Hz frequency range that these drivers operate at. Therefore, the driver is a perfect piston within the frequencies used. Thus, extremely low cone break-up distortion is inherent in the driver that is designed for the Genesis servo-bass system.
Unlike the midrange and the tweeters, the front and rear woofers operate in phase as a bipolar arrangement in which all sixteen 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
