SVS SB-16 Ultra Review

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Yacoubian's infomercial on YouTube about the SB16-Ultra ($1999.99) lists the three design features that enabled SVS to build a subwoofer with so large a cone and still meet the design goals of extended, low-distortion bass output and fast transient response: an 8" edge-wound voice-coil in a new motor, a 1500W RMS (>5kW peak) Sledge amplifier with fully discrete MOSFET output (each output device is rated at 200V and 64A), and control and bass management via a smartphone app.

Yacoubian claims that the SB16-Ultra's 8" voice-coil is the largest used to date in a consumer subwoofer. Most large subs have voice-coils 2" to 4" in diameter that sit inside the permanent magnets; the SB16's 8" coil sits outside the magnets. SVS found so large a coil necessary in order to: avoid the cone flexing and the resultant boomy bass produced in and by subwoofers that have cones 15" to 18" in diameter but voice-coils of only 2" to 4"; maintain linear control over so large a cone; better dissipate heat, which lessens thermal compression and so increases a sub's power handling; provide better centering of the voice-coil, with less tilting during large excursions; and to use the permanent magnets most efficiently. The SB16-Ultra's voice-coil is wound with copper-clad aluminum wire (CCAW); CCAW has a number of advantages: it's lighter than pure copper, for lower moving mass; it's stronger than pure aluminum; has higher electrical conductivity; and is more easily soldered, for more durable and reliable connections...continue reading here

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12 June, 2018 by Michael Babb
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