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The SVS SB13-Ultra is a sealed box subwoofer designed for audiophile-grade music and home theater applications. It features a 13.5-inch high-output woofer with a composite pulp/fiberglass cone, dual linear-roll spiders, and a bifilar wound 3-inch aluminum voice coil optimized for sealed enclosure use. The woofer's motor is FEA-optimized with a copper shorting sleeve to reduce distortion and improve thermal conductivity. The subwoofer is powered by a 1000 watt RMS (3600 watt peak) Class D STA-1000D Sledge amplifier with advanced DSP and EQ controls, including two digital parametric EQs, room gain compensation, adjustable digital delay, and a fully adjustable phase-correct speaker/sub digital crossover. The enclosure is a rigid, braced MDF cabinet available in piano gloss black or real black oak veneer finish. Inputs include stereo line-level RCA and balanced XLR connections with normal and high input voltage settings. The subwoofer weighs 92 pounds and measures approximately 17.9" H x 17.4" W x 20.4" D with grille. It includes a detachable power cord and a protective non-resonant steel mesh grille. The SB13-Ultra is known for its tight, clean bass response with low distortion and excellent transient response, making it suitable for both music and movie soundtracks.
Driver and acoustic performance characteristics
Amplification power output and characteristics
Driver configuration and enclosure design
Input and output connections
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
Estimated price (community-sourced)
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The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The SB1000 Pro's power @ 8ω is 325W against the SB13 Ultra's 1.0kW, its woofer 12" against 13.5", and its high-frequency extension 270 Hz against 460 Hz. Both share low-frequency extension (20 Hz).
Both turn up in the same documented systems.
The SB2000 Pro's power @ 8ω is 550W against the SB13 Ultra's 1.0kW, its low-frequency extension 19 Hz against 20 Hz, its woofer 12" against 13.5", and its high-frequency extension 240 Hz against 460 Hz.
Both turn up in the same documented systems.
The Ultra-X13: DISCONTINUED's woofer is 13" against the SB13 Ultra's 13.5", its low-frequency extension 15 Hz against 20 Hz, and its high-frequency extension 200 Hz against 460 Hz. Both share power @ 8ω (1.0kW).
The Ultra 13 Compact's low-frequency extension is 15 Hz against the SB13 Ultra's 20 Hz and its high-frequency extension 200 Hz against 460 Hz. Both share power @ 8ω (1.0kW) and woofer (13.5").
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