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S4/8 Owners Manual Ver 0.1
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absolu te fidelity
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The best amplifier for this application is a Class-D switching amplifier.
One of the reasons a Class-D amplifier is optimum for this application
is that it has a dramatically increased efficiency, especially at lower
frequencies. A 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 also puts out more power with less heat and less power
consumption; ideal for use as a subwoofer amplifier.
The S4/8 uses 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 S4/8 subwoofer features
four 8-inch woofers that are designed with ribbed aluminum cones, that
are lightweight and yet inherently stiff. Our aluminum cones exhibit no
resonance or cone flexure anywhere near the frequencies at which the
subwoofer operates. 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 S4/8. Therefore, the driver is a
perfect piston within the frequencies used, and exhibits very low cone-
breakup distortion.