SVS SB12-NSD 12" 400W Sealed Box Subwoofer (Premium Black Ash)

Model: SB12-NSD UPC: 851888000121 Item: 172965

$399.00 OR

Regular Price: $680.00

Save: $281.00 (41%)

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Product Information

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 setup 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 a 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.




  • Cabinet dimensions (H x W x D): 14.2" x 14.2" x 14.2"
  • Overall dimensions (H x W x D): 14.7" x 14.2" x 17.3"
  • Weight: 35 lbs.
  • Power cord length: 8 feet


  • Driver: SVS 12" NSD driver
  • Voice coil: 2" diameter, high-power voice coil with high-temp former


  • Input impedance: 20kΩ (unbalanced RCA)
  • Power: 400W RMS continuous power; 800W peak dynamic power

What's in the Box

What's in the Box:

  • SB12-NSD 12" 400W Sealed Box Subwoofer



Customer Reviews for SVS SB12-NSD 12" 400W Sealed Box Subwoofer (Premium Black Ash)

5.0 / 5.0
1 Review
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Rated 5 out of 5
Great Sub!
Very clean sounding sub, doesn't rattle the walls quite as much as my Polk PSW-505 on movies, but turn up the gain and it comes close. Very good for movies, but highly recommended for music. My room is 15x10 and this is more than adequate with the gain at around the 40% setting. Great looking sub too, very stylish and I love the metal grill. The Polk's cloth grill was a scratching pad for the cat, so metal is the way to go. It's pretty thick and will not dent easily. According to SVS, the NSD series falls in between the 1000 and 2000 series, so at $399 it's a steal since the 1000 retails for $499.
This review was collected as part of a promotion
January 11, 2020


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Will you guys be restocking this item?
wasi s on Jun 18, 2020
  Please call us at 866.961.7781. We have experts here to talk about pricing and availability. Thanks.