SB13-Ultra

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SB13-Ultra

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The SB13-Ultra is retired. For comparable performance, check out the SVS SB-4000 and SB16-Ultra subwoofers or browse the SVS Outlet store for the best prices you’ll find on all SVS subwoofers.

Since the 13-Ultra subwoofers were launched, we’ve made huge advancements in our Sledge amplifier technology, which is now available to you! Any 13-Ultra owners who ever wanted an affordable upgrade path to enjoy the amazing performance and control benefits of the acclaimed SVS 4000 Series subwoofers can now take advantage of the SVS 13-Ultra Amplifier Upgrade Kit.

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A perfect 17-inch square, the SB13-Ultra subwoofer’s compact design is ideally suited for spaces where larger subwoofers wouldn’t fit, but deep, palpable bass is still desired. Painstakingly engineered, the SB13-Ultra is loaded with advanced design elements that set it apart from the competition.

High Output SVS Ultra Series Driver Design

Instead of merely adapting the previous Ultra driver to a more compact sealed enclosure, SVS engineers radically revised the motor geometry, added a unique, ultra-high-power aluminum voice coil, and developed a custom gap extension plate that increases linear stroke and reduces distortion. Add to that dual linear-roll spiders, a stitched parabolic surround, and the ultra-light but rigid Rohacell composite cone material of the 13-Ultra driver, and the result is an incredibly robust subwoofer with extreme excursion that easily outperforms subwoofers costing twice as much.

Powerful and Sophisticated Sledge STA-1000D Amplifier

To complement these driver refinements, the SB13-Ultra employs an integrated 1,000 watts RMS, 3,200+ watts peak power DSP Sledge amplifier with sophisticated DSPs perfectly matched to the driver and cabinet, and an equalization curve optimized for enhanced transient response and to complement room gain. Although it’s rated to deliver 20Hz to 460Hz (±3dB), in the right room, with the right settings, it can easily reach down to a gut-wrenching 15Hz, without diminishing the nuanced textures and incredible transient response that audiophiles demand of music. Its room gain compensation control also allows the SB13-Ultra to sonically adapt for optimal in-room frequency response. Power users will appreciate the two-band parametric equalizer (PEQ), yet this advanced feature is easily disabled for users who prefer to rely on the bass management of their favorite preamp or receiver.

Since the 13-Ultra subwoofers were launched, we’ve made huge advancements in our Sledge amplifier technology, which is now available to you! Any 13-Ultra owners who ever wanted an affordable upgrade path to enjoy the amazing performance and control benefits of the acclaimed SVS 4000 Series subwoofers can now take advantage of the SVS 13-Ultra Amplifier Upgrade Kit.

Acoustically Inert, Rigidly Braced Cabinet

The SB13-Ultra subwoofer cabinet is rigidly braced and acoustically inert for uncompromising performance and its understated but elegant design allow it to blend with any room’s décor, while still delivering thunderous low frequency impact that’s impossible to ignore.Described in reviews as authoritative, stunning, immensely powerful, pitch-perfect, versatile, and jaw-droppingly accurate, words and accolades only tell part of the story. The feeling you get when a musical bassline drops or your home theater erupts to life during an action movie sequence, or the shivers that goes down your spine when it resolves a deep but delicate sonic detail; these are the moments when the SB13-Ultra subwoofer shows its ultimate value.

Frequency Response / Acoustic Data:

  • 20-460Hz ± 3 dB
  • Roll-off slope specifically optimized to take maximum advantage of available room gain
  • 2-meter ground plane away from reflective structures (quasi-anechoic).

Subwoofer Specs:

  • Piano gloss black and real black oak veneer finish options
  • Front-firing 13.5" driver
  • Protective non-resonant steel mesh grille
  • Rigid and braced MDF cabinet
  • Detachable power cord
  • Cabinet Dimensions: 17.9" (H) x 17.4" (W) x 18.5" (D) (without grille)
  • Overall Dimensions: 17.9" (H) x 17.4" (W) x 20.4" (D) (with grille)
  • Weight (unboxed): 92 pounds
  • Shipped Dimensions: 23" (H) x 23" (W) x 27" (D)
  • Shipped Weight: 105 pounds

Driver Specs:

  • SVS 13.5” high-performance Ultra driver optimized for sealed applications
  • SVS custom-tooled die-cast aluminum basket
  • Flat-wire, 3” diameter, high-power, high-temp, 8-layer, aluminum voice coil - unique to SB13-Ultra
  • Polyimide impregnated fiberglass former/bobbin
  • Dual 9", composite layered, linear roll, extreme excursion spiders
  • Integrated tinsel leads
  • Nickel-plated high-tension spring terminals
  • Proprietary injection molded gasket and parabolic SBR extreme-excursion surround
  • Composite pulp/fiberglass press layered cone with stitched surround
  • Low carbon 1008 steel components, electrophoresis black plating
  • FEA-optimized overhung motor structure with custom gap extension plate enhances force/displacement symmetry, lower distortion and increases linear stroke
  • Copper shorting sleeve reduces gap induction and distortion, and enhances thermal conductivity
  • Dual Genox 8H/Y-35 high grade ferrite magnets
  • Oversized pole vent for greater cooling and low noise

Amplifier Specs:

  • STA-1000D Sledge with 1000 watts RMS continuous power (3600 watts peak dynamic power)
  • High efficiency cool-running Class D switching topology
  • Detachable power cord with main power switch and ceramic fuse
  • RoHS compliant, lead-free construction and world-wide safety certifications
  • Auto-On / On switch with "green" standby mode
  • Stereo line-level RCA and balanced (XLR) input/output connections
  • Normal and Hi input voltage switch
  • Fully adjustable (frequency and slope) phase-correct speaker/sub digital crossover
  • Customized EQ and DSP limiter settings specifically for the SB13-Ultra
  • Intelligent Feature Control (IFC) with bright LCD display
  • Two (2) digital PEQs with adjustable frequency, cut/boost, and Q values
  • Room gain compensation control with adjustable frequency and slope
  • Adjustable digital delay on main speaker line-level outputs to time-align the speakers and subs
  • Input impedance - 24 kΩ (unbalanced RCA) / 22 kΩ (balanced XLR)