SVS SB12-NSD - 12" 400-watt Sealed Subwoofer - Premium Black Ash


  • $ 399.00

SVS SB12-NSD Sealed Subwoofer

If you’re looking for an absolute steal of a subwoofer deal, the SB12-NSD is a well-balanced powerhouse that blends with any speakers to provide the perfect foundation of low-frequency output. One of the top-selling SVS SB-12 NSD subwoofer features an unbeatable combination of low frequency extension, room energizing power, and lightning-fast and musical quickness from the commanding 12-inch driver and 400 watts RMS, 800+ watts peak power Sledge DSP amplifier enclosed in a compact cabinet measuring only 14-inches on all sides.

The SVS SB12 NSD Subwoofer is ONE of the best-selling SVS subwoofer for its combination of effortless power, pinpoint accuracy, flawless transient response, uncompromised musicality, and intelligent processing from a relatively compact cabinet that easily integrates into any system. Featuring Sledge DSP amplifier SVS SB12 NSD Subwoofer obliterates expectations and delivers unmatched performance for a sealed subwoofer anywhere near its price range staking a claim as the best home theater subwoofer under $1,000. Best of all, it’s available for nearly 50% off the original price of $680! Equally adaptable for music, movies, TV and gaming, in any room, the SB12-NSD produces deep, tight and articulate bass at any drive level with pinpoint accuracy and transient speed. With this low price, room-friendly design and limited supply, these subwoofers will disappear fast.



From the thunderous pounding as a helicopter descends from overhead, to the thumping bass line of your favorite songs; the compact SVS SB12-NSD subwoofer delivers the sonic slam and room energizing SPLs that bring your entertainment to life.

A combination of innovative driver design, effortless amplifier power, handsome styling and compact dimensions make the SB12-NSD a world class performance at any price. The subwoofer easily integrates into any room and adds a powerful new dimension to all your entertainment. Feel sound like never before with dynamics that make your hair stand on end and effects that make you jump out of your seat. Best of all, you will never find this level of rock-solid SVS engineering and deep, articulate bass performance at such a low price, ever.

Forceful SVS 12" NSD High-Output Driver

With SVS, compact and affordable doesn’t mean compromising on performance. The 12” driver in the SB12-NSD handles every watt of the Sledge amplifier’s power and pumps out loads of deep, flawless and powerful bass with ultra-low distortion, even when pushed to the absolute limit.

Sledge Amplification: Foundation of Room Energizing Bass Performance

True to the SVS philosophy, the SB12-NSD Sledge STA-400D amplifier has been rigorously engineered to enhance the listening experience by providing quick, smooth and precise signal processing at all drive levels. With digital bass management features and flexible set up options, the Sledge amp makes it easy to optimize for any equipment and to accommodate any room characteristics. Conservatively rated at 800 watts peak power, and 400 watts continuous power, the SB12-NSD effortlessly works with the driver to deliver intelligent, powerful bass performance.

Handsome New Styling, Versatile Placement Options, Easy Room Integration

The SB12-NSD is available in premium Black Ash finish for high end styling that complements its stunning performance. At just over 14” on all sides, the compact SB12-NSD is incredibly easy to integrate into any living space and can even be placed inside furniture for a totally discrete set-up. The sealed box cabinet is optimized for deep, room-energizing bass, lightning quick speed in transients and revealing musicality that will suit both audiophiles and hone theater fans alike.

“At the end of our term with the SB12-NSD we came away impressed with the overall build quality, look and behavior of this small sealed unit. Highly Recommended.”


“...this little bugger will hold its own right to the level of wall destruction."

Home Theater Shack

“Build and operation is smooth and apparently bomb proof, the finishes you're allowed are superb, it's looks distinctive without being overly extrovert.“

AV Forums

“Overall, the SB12-NSD is a talented bass beast that marries impressive weight with control and finesse… the SVS boasts excellent low-end extension and ferocity – but is also fast, detailed and extremely accurate.”

Home Cinema Choice



Subwoofer Specs:

  • - High quality charcoal black vinyl, or polished piano gloss finish
  • - Front-firing 12" driver
  • - Rigid Medium Density Fiberboard (MDF) cabinet
  • - Protective non-resonant steel mesh grille
  • - Detachable 8 foot power cord
  • - Cabinet Dimensions: 14.2" (H) x 14.2" (W) x 14.2"(D)
  • - Overall Dimensions: 14.7" (H) x 14.2" (W) x 17.3"(D) (includes feet, grille, amplifier)
  • - Weight (unboxed): 35 pounds
  • - Shipped Dimensions: 21" (H) x 20" (W) x 22"(D)
  • - Weight: 51 pounds

Driver Specs:

  • - SVS 12” NSD driver
  • - 2” diameter, high-power voice coil with high-temp former
  • - Nomex linear roll long-throw spider
  • - Low-creep rubber long-throw surround
  • - Spider-integrated tinsel leads
  • - Aluminum cone and composite dust cap with SVS logo
  • - Powder-coated cast aluminum basket
  • - Finite Element Analysis (FEA)-optimized motor structure
  • - Dual shorting rings and pole extenders to reduce gap induction and distortion
  • - Dual high-grade ferrite magnets

Amplifier Specs:

  • - STA-400D Sledge with 400 watts RMS continuous power (800 watts peak dynamic power)
  • - High efficiency cool-running Class D switching topology
  • - Detachable power cord with main power switch and fuse
  • - RoHS compliant, lead-free construction and world-wide safety certifications
  • - Auto-On / On switch with "green" standby mode
  • - Stereo line-level RCA input/output connections


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