Effortless output, shocking bass extension and pitch perfect musicality from one of the most positively reviewed and critically acclaimed subwoofers in history. The SVS SB13-Ultra offers a perfect mix of massive output and low frequency extension with musicality and accuracy, all from a stylish cabinet measuring only 17-inches all around.
The SB13-Ultra is now retired. We now offer the more powerful and less expensive SVS SB-4000 subwoofer with a 1,200 watts RMS, 2,000+ watts peak power DSP amplifier, 13.5-inch high-excursion driver and innovative smartphone app for DSP control with custom presets.Learn More About SB-4000
For the ultimate SVS subwoofer experience, check out the SVS 16-Ultra subwoofers with 1,500 watts RMS, 5,000+ watts peak power DSP amplifiers, 16-inch SVS Ultra drivers and the smartphone app.Learn More About SB16-Ultra
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Chest-thumping power, fathomless low frequency extension, pinpoint accuracy and refined musicality - all from a relatively compact 17-inch square cabinet. With a legendary 13.5-inch Ultra driver and 1,000 watts RMS, 3,600 watts peak Sledge STA-1000D DSP amplifier, the SB13-Ultra is an all-time great subwoofer for music and home theater fans alike.
- Driver | 13.5"
- Amplifier | 1000 watts RMS (3600 watts peak)
- Freq. Response | 20-460Hz ±3 dB
- Port Size & # | N/A
- Dimension | 17.4" (H) 17.4" (W) 18.5" (D)
- Weight | 92lbs
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.
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.
SVS Subwoofer Design Philosophy
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).
- 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
- 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
- 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)
"The SB13 is a subwoofer to have a good time with, a speaker that nails you to your listening room and makes you want to watch more movies, throw more parties and listen to more music. It is accurate, speedy and doesn’t spout. It brings out elements in movies that would otherwise go unnoticed. Explosions acquire intense, falls are persuasive, and music is deeper than ever. Everything sounds exciting."
HXOS+ SoundVision (Greece) Review the SB13-Ultra Subwoofer
Exemplary…bass with authority and slam that’s defined and informative…I had to surrender to the charms of the SB13-Ultra…The best subwoofer for the money I’ve auditioned in the last decade.
SB13-Ultra Receives StereoNet Best Subwoofer Under $5,000 Award
“In its price range, it’s the best subwoofer I’ve heard”.
SB13-Ultra awarded as Stereophile "Recommended Component"
The SB13-Ultra's detailed, toe-tappingly pitch-perfect, stop-on-a-dime response, and its small size, low weight, rugged construction, superb finish, simple but sophisticated IFC control, sturdy drive-unit, and great customer support, all put it on my list of recommended subwoofers.
Stereophile - Larry Greenhill Reviews the SB13-Ultra Subwoofer
Sound + Vision names our SB13-Ultra as “Best over $1000”
"In this price range, I've never heard of subwoofer operate with as much ease, ever… highly recommendable"
Magazine-Audio.com Reviews the SB13-Ultra Subwoofer (French)
"If you’re an enthusiast who wants the speed and control of a sealed enclosure with the deep bass extension typical of a ported sub, then you’ve found your pot of gold in the SB13-Ultra...arguably one of the best (or possibly the best) price-performance value in subwoofers"
The Poor Audiophile - Review of the SB13-Ultra
"I would expect no less than rock solid reliability and well balanced performance from any SVS subwoofer…the SB13-Ultra is my personal favorite…the SB13-Ultra operated and performed flawlessly…"
Audioholics - Joshua Ricci Reviews the SB13-Ultra
"Overall, the SB13-Ultra performance is so good, and its quality build and price so impressive, I have absolutely no negatives…For under $1,600, the SVS SB13-Ultra gets you a high-performance, acoustic suspension subwoofer that can handle about all the serious bass of a multi-channel or stereo speaker system."
Everything Audio - John Gatski Reviews the SB13-Ultra
"Dollar for dollar, the SVS SB13-Ultra is one of the best (if not THE best) subwoofers on the market. Powerful, deep bass. Equally adept performance for music and moves. The only way to make it much better is to buy two."
The SB13-Ultra Subwoofer Receives HomeTheaterReview.com's Best of 2013 Award
"It plays loud and deep with extremely low distortion. But it also has the ability to deliver finely nuanced bass with textures and dynamic shadings that are quite rare even by today's standards... It is quite frankly an engineering juggernaut."
Secrets of Home Theater and High Fidelity - Jim Clements Reviews the SB13-Ultra Subwoofer
"…one of the very best subwoofers I have had the pleasure of spending time with… The way the SB13-Ultra goes about low end exertion is so utterly convincing that going back to most other devices seems like a bit of a letdown afterwards."
AVForums Reviews the SB13-Ultra Subwoofer
"I couldn't believe how low this SVS could go. More importantly, I was struck by how clean and nuanced the bass is at even its lowest levels... It is far and away the deepest and most detailed sub I've had the pleasure of listening to in my home theater."
Big Picture Big Sound Reviews the SB13-Ultra
"I found the bass to be authoritative, while at the same time complimentary to the mids and highs. From the bass guitar to the djembes and piano, every low-frequency element was well fleshed out and engaging… With a sub of this caliber, you'll surely make enemies of your neighbors, but you'll have so much fun doing so that it's totally worth it. The bottom line is that the SVS SB13-Ultra is a meaningful audio component that's worth every penny of its $1,599 asking price.I found the bass to be authoritative, while at the same time complimentary to the mids and highs. From the bass guitar to the djembes and piano, every low-frequency element was well fleshed out and engaging… With a sub of this caliber, you'll surely make enemies of your neighbors, but you'll have so much fun doing so that it's totally worth it. The bottom line is that the SVS SB13-Ultra is a meaningful audio component that's worth every penny of its $1,599 asking price."
HomeTheaterReview.com Reviews the SB13-Ultra Subwoofer
"Designed to deliver vigorous, versatile bass performance, the SVS SB13-Ultra is a low-frequency, high-output knockout offered at an unbeatable value, in a surprisingly elegant footprint."
Electronic House names the SB13-Ultra Best Products of 2013
"No matter how loud I played it, I couldn't get the sub to bottom out or show any signs of strain. Furthermore, my room is more than 5,000 cubic feet, and I never once felt the subwoofer running out of headroom. That's pretty damn impressive." "Outstanding value. Powerful deep bass response. Built-in parametric EQ" "... the SB13-Ultra is going on my short list for future upgrades to my home theater. Highly recommended."
Home Theater magazine names the SB13-Ultra subwoofer best 18 products of 2012
"No matter what we threw at this subwoofer, it came back with exactly what we wanted to hear... If there is a more perfect subwoofer in production today, we haven't heard it."
Digital Trends reviews the SB13-Ultra
"Sound & Vision names the PC13-Ultra subwoofer best 23 products of 2012." "In his review of the PC13-Ultra, Brent Butterworth commended its versatile tuning options, which in combination withh advanced DSP capabilities allowed him to tune it for a fatter, more powerful sound, or a tighter, punchier one."
Widescreen Review Magazine Features the SB13-Ultra In their November Issue
"The SVS SB13-Ultra is an exceptional product that is true to SVS's tradition of offering higher performance for the money through R&D and design... this is an exceptionally high-performance subwoofer that can accurately reproduce the sound of music or movies."
Widescreen Review Magazine Features the SB13-Ultra In their November Issue
"It is not just the aesthetics. It is not just the power. It is not just the precision and it is not just the level of detail that can be heard in the VLF range. It is all of these things combined that make the SB13 Ultra my Sub Zone Reviewer's Choice. There is simply no better performing subwoofer in its class." "It is not only a gorgeous piece of hardware but it performs like no other sub I have ever heard." "Knowing that there is a subwoofer that can reproduce incredibly dynamic bass with as much clarity, precision and 'Refined Brutality' for less than $2K ($1599 with free shipping to be exact) is a testament to the commitment of the SVS team and they should be applauded for it."
Home Theater Shack reviews the SB-13 Ultra Subwoofer
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5 Performance Attributes of a World Class Subwoofer
“…you’ve found your pot of gold...arguably one of the best (or possibly the best) price-performance value in subwoofers.”
“If there is a more perfect subwoofer in production today, we haven't heard it yet.”