SVS SB-3000
SVS’s recently introduced SB-3000 is a compact powered subwoofer that’s $600 cheaper, a few cubic inches smaller, and 37lb lighter than the model it replaces, the SVS SB13-Ultra. Its amplifier is less powerful (800W vs 1000W), but its rated frequency response extends lower: a stygian 18Hz, compared to the SB13-Ultra’s merely stentorian 20Hz.
The SB-3000’s newly designed 13" driver has a vented aluminum cone, an injection-molded gasket and surround, and a polyimide-impregnated fiberglass former, surrounded by two 15lb toroidal ferrite magnets. Its new 2" split-wind voice-coil has a lower winding density in the center, flanked by two higher-density winding sections, an arrangement said to support low excursion at low output volumes but increased output range for higher output volumes. The driver has four 24-strand silver-plated Litz lead wires woven through the 6.5" 2-ply Nomex-composite spider; oversized nickel-plated high-tension spring terminals; and a low carbon vented steel U-yoke and top plate.
The sub’s internal class-D amplifier, named Sledge, has a digital front end but an output section built with fully discrete, high-current (25A) 600V MOSFET output devices, for a rated 800W RMS and 2500W peak. All app settings, including those for its parametric equalizer, are managed by an internal high-resolution 50MHz Analog Devices DSP chip with 56-bit filtering. The DSP uses a “power factor correction algorithm” to reduce current needs by 30%–50% while maintaining a steady 360V DC from the internal power supply. This contributes to the sub’s efficiency, enabling it to pump out 120dB
