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The best amplifier for this application is a Class-D switching amplifier. One of the reasons is dramatically increased efficiency, especially at the lower frequencies. The typical Class A/B amplifier is only 50% efficient. A Class-D amplifier, on the other hand, can be 90% efficient. A Class-D amp puts out more power and less heat, and with less power consumption, and is ideal as an amplifier for a subwoofer.
In the Genesis 928, we use a proprietary ultra-efficient discrete MOSFET switching amplifier with output capability of up to a full kilowatt. The design provides extraordinary control with high-damping, and great thermal stability so that you can play the most demanding sources continuously at high volume.
The Transducers
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 G928 subwoofer features two side-firing 12-inch woofers that are designed with aluminum cones, which are lightweight and yet inherently stiff. Our aluminum cones exhibit no resonance or cone flexure anywhere near the frequencies that the 928 operates at.
The lowest break-up mode (where there can be any chance of distortion at all) is at 6,000Hz – far above the 25Hz to 120Hz frequency response of the G928. Therefore, the driver is a perfect piston within the frequencies used. Thus, extremely low cone breakup distortion is inherent in the driver that we designed for the Genesis 928 Subwoofer.
The Cabinet
Having two side-firing woofers in phase, means that the cabinet is inherently balanced. This also contributes to dramatically reduced distortion caused by cabinet vibrations. Moreover, when the T-rex stomps across the screen, you can be assured that the G928 won’t hop along!
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