SVS SB-4000 13.5" 1200W Sealed Box Subwoofer

Model: SB4000PG UPC: 856677007374 Item: 2294


Color: Piano Black - In Stock

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SVS SB-4000 13.5” 1200W Sealed Box Subwoofer Overview

Music lovers and movie buffs agree, deep impactful bass adds an unparalleled layer of excitement to your media. The SVS SB-4000 13.5” 1200W Sealed Box Subwoofer will unleash the sonic power hidden inside your favorite tunes and films. This easy to set up, heavy duty, compact, sealed box subwoofer delivers 1,200-watts of clean, defined booming bass to you your home entertainment system. Featuring a high resolution Audio DSP, the SB-4000 has the most advanced subwoofer processor available resulting in accurate audio reproduction. This subwoofer delivers clear distortion free bass without drowning out other frequencies of your soundstage. Add some boom to your room with the SB-4000 subwoofer.

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Unparalleled Low Frequency Depth, Power, and Detail

Chest-thumping slam and extreme low frequency extension with pinpoint accuracy and refined musicality – a level of subwoofer performance not seen at this price before. The SB-4000’s sophisticated DSP amplifier, innovative driver, and a sealed box design master room gain and command a space with deeper bass and higher output levels than what is typically possible from a subwoofer of its size. A top choice for audiophile music or home theater systems, the SB-4000 sets all performance benchmarks for a subwoofer and leaves larger and more expensive subs trembling in its wake.

Rated conservatively at 1,200 watts RMS, and 4,000+ watts peak power, the 4000 Series Sledge STA-1200D amplifiers use an efficient Class D design combined with fully discrete MOSFET output and a sophisticated Analog Devices DSP engine. The result is a level of effortless power and advanced processing not available from any other subwoofer manufacturer.

High Current Output of Discrete MOSFETs with Efficiency of Class D Amplifier

Combines the efficiency of a Class D amplifier design with the ability to move massive amounts of current through the fully discrete MOSFETs enabling immense low frequency output and precise driver control. Put simply, outstanding real-world subwoofer performance at all drive levels.

Sophisticated 50Mhz High Resolution Analog Devices Audio DSP

Most advanced digital processor ever used in a subwoofer maintains pinpoint accuracy and pristine sound quality through advanced in-room tuning, optimized frequency response curves, powerful DSP controls, and more.

Room Gain

Maximizes the subwoofer’s ability to take control of a room and benefit from the acoustic potential of the space it occupies by tailoring the roll off slope. The effect is accurate frequency response with staggeringly deep in-room extension – often as low as 10Hz - without the “boominess” commonly associated with room gain.

Advanced Limiting

Allows the amplifier to deliver all the way to the limits of its rated power and maximize on the driver’s potential with massive output and no distortion.

Active Power Factor Correction (PFC)

Serves as a line conditioner, surge suppressor, and voltage regulator letting the amplifier deal with wide voltage fluctuations and ensuring the subwoofers operate flawlessly on any household circuit no matter how unstable the incoming current.

An isolated circuit creates a vanishingly low noise floor by eliminating the potential for ground loop hums from outside components resulting in absolute sonic transparency.

Legendary SVS Output and Control

SVS 4000 Series drivers handle every watt of the Sledge STA-1200D amplifier’s power with precision and control to produce room energizing SPLs and effortless low frequency extension with pinpoint accuracy at all drive levels.

  • Dual ferrite magnet motor assembly weighing nearly 40lbs generates immense magnetic force and excursion of the 13.5-inch driver to produce massive low frequency output well below the limits of human hearing.
  • Edge wound voice coil with eight-layer aluminum flat wire minimizes distortion and power compression while providing excellent heat dissipation and linearity ensuring precise control.
  • Lightweight and rigid composite cone with premium glass fiber dustcap generate massive output with pinpoint accurate frequency response.
  • Proprietary injection molded gasket and long-throw parabolic surround ensure longevity and allow extreme excursion and SPLs.

Easiest Way Ever to Manage Subwoofer DSP and Control

Groundbreaking smartphone app works with Apple iOS and Android devices to unleash the full depth, force, and nuance of the 4000 Series subwoofers by controlling all DSP functions including: volume, parametric EQ, low pass filter, phase, polarity, room gain, port-tuning, custom presets, and system settings.

  • Connects via Bluetooth for convenient control even when subwoofer is out of sight.
  • 3-band parametric EQ controller allows precise adjustments for frequency slope and Q factor down to the single Hz level with four different slopes, so users can improve performance by eliminating peaks, nulls and other room issues.
  • Stores 3 custom presets for movies, music and other listening experiences such as sports or gaming.
  • 2-way feedback shows updates in real time on both the app and subwoofer interface.

Acoustically Inert and Rigidly Braced

Inlaid front panel display, rounded edges, and a curved metal grille on the 4000 Series cabinet give it a refined yet commanding look that blends visually with home theaters and high-end audio systems.

  • Double thick 2-inch MDF front baffle and rigid internal bracing to support the massive drive unit and to ensure an acoustically inert environment.
  • Highly reinforced internal design and acoustic insulation eliminates all coloration or resonance from the cabinet, even when the deepest low frequencies are played at reference volume.
  • Protective, non-resonant steel mesh grille and custom elastomer feet for reducing noise artifacts within a room.

Product highlights

  • High-performance sealed cabinet subwoofer
  • 1,200-watt continuous Class D design with 4,000+ watts of Peak Power
  • Adds powerful, deep, clean bass to your home music system 
  • Massive 13.5 driver delivers deep, powerful bass while eliminating distortion
  • Available in black ash and piano gloss black finish options
  • XLR and RCA stereo input/output 
  • IR remote included
  • SVS App works with both iOS and Android operating systems.
  • SVS SB-4000 Weight:  102.3 lbs
  • SVS SB-4000 Dimensions ( W x H x  D): 17.8” x 18.3” x 20.9”
  • Warranty: 5-year (World Wide Stereo is an authorized dealer for all brands we sell)
  • World Wide Stereo 60-day guarantee and product support

Powerful bass for all your entertainment

The SB-4000 features an advanced Digital Signal Processor (DSP) ensuring deep and powerful bass, with no distortion, no matter how loud or quiet your volume. The sealed cabinet features an extra think, resonant-resistant MDF front baffle and rigid internal bracing to eliminate vibration and sound coloration. The result is deep and articulate bass that you can hear and feel.

Easy Setup

Adding complex bass to your home audio setup doesn’t have to be complicated. Setting up the SB-4000 is as easy as connecting a single RCA subwoofer interconnect cable from your AV receiver “SUB 1” output to the SB-4000’s “LFE” line level input. If you use preamp and power amps you can use the Line Level Connection on the back of the subwoofer.

The SVS App

Take control of your subwoofer with the SVS Bluetooth DSP control app for iOS and Android. The free app lets you control device volume, parametric EQ, low pass filter, phase, polarity, room gain, custom presets and system settings. It also lets you choose between three custom presets that make it easy for you to get the best sound based on your room’s floor plan.

Meet SVS

SVS was founded more than 15 years ago by a group of audio enthusiasts who wanted to develop exceptional home audio at a reasonable price. Our friends at SVS develop dynamic sounding home audio equipment that combines cutting edge technology, precision engineering, and extensive testing. The result is high performance audio equipment that doesn’t break the bank.



  • Weight: 102.3 lbs.
  • Dimensions (H x W x D): 18.3" x 17.8" x 20.9"
  • Amplifier power: 1,200 watts continuous power/4,200 watts peak dynamic power
  • Driver: Proprietary 13.5" 4000 Series driver
  • Frequency response: 19 - 310Hz ± 3dB
  • Maximum low frequency output: 126.8dB @ 32Hz 1/8 space 1m

What's in the Box

What's in the Box:

  • SB-4000 13.5" 1200W Subwoofer


Customer Reviews for SVS SB-4000 13.5" 1200W Sealed Box Subwoofer

4.6 / 5.0
34 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
SB-4000 SVS Subwoofer
I've listened to my SB-4000 for 6 months now and it's advertised descriptions are spot on. This unit hits the low notes extremely accurately and it's fast transients are exactly as described in its reviews. I push it really hard at times with early 80's industrial as well other musical genre's and I never hear even a slight hick-up. I listen to a Primaluna EVO300 with Klipsch LaScala's and this subwoofer works perfectly with both wired and with the SVS Soundpath wireless setup. I highly recommend the SB-4000!
November 26, 2019
Originally posted at
Dimensions of the room for the SB-4000
Do you recomemnd minimum dimensions for the room to install this sub? Thank you.
November 23, 2019
Originally posted at
A Great Subwoofer
I have been using the SB-4000 subwoofer in my home theater system for several months. The SB-4000 blends perfectly with my NHT 2.4 towers and related speakers. The advice from SVS associates about which subwoofer to get was just right. The sub produces tight, quick bass, can rattle windows, yet never does anything to give away its location. I am very happy with my purchase and would encourage anyone looking for a great subwoofer to get an SVS sub.
November 12, 2019
Originally posted at
Unequalled Customer Care
My SVS Subwoofers are of a rather older vintage than the SB-4000's, but after YEARS of Fantastic Performance, one of my Subs was suddenly in need of service. One Quick Email was all that was required! The SVS Team responded immediately! Within ONE HOUR, UPGRADED repair parts were enroute to me.

When you Purchase SVS, You get not only a Superior Product, but also an Incredible Team of Experts to Guide You, and Support your Equipment.

SVS is the Real Thing!

Purchase with Complete Confidence.
November 8, 2019
Originally posted at
sounds good to -13.... (update)
I just spent 5 hours listening to music and playing with my sub and found that -50 is the only place it sounds close to "proper" turn it down all the way and the bloat almost completely disappears, the only reason (i'm) not that happy with it is because i got it when the sb13 was recommended for the ls50, i went to purchase, seen the sb4000 replaced it and paired it with my ls50w's... Baaad idea dual 1 or 2000's would've been the way to go
September 14, 2019
Originally posted at
SB 4000
I decided on the SB 4000 as a replacement for my Klipsch 10" down firing ported sub. There is no comparison. Literally! To even discuss their differences would, in truth, and for all practical applications be futile. The SB 4000 exudes clarity, and its sophistication of sound is omnipresent and lends itself to the conversation of your music. It is everything you want and need a subwoofer to be, a partner to your media. I upgraded to the SB 4000 after purchasing the SB 1000, SB 3000, and SB 4000 at the same time for side by side comparisons. My speaker system currently includes SVS Ultra towers, Ultra center, a pair of prime satellites, and a pair of prime elevations. The SB 4000 was the hands down winner of overall sound quality and effortlessly true sound production. It establishes the system as a whole as it reproduces nuance with delicacy while listening to a high resolution recording of Beethoven's "Moonlight Sonata". It rattles your rib cage in the IMAX enhanced "Space Station" 4K HDR shuttle launch sequence. My wife and I were blown away by the sheer power and pressurization the SB 4000 offers when required.
July 21, 2019
Originally posted at
Just received my SB-4000. My first impression is that this is an awesome speaker. It looks and feel like a brute; it can even perform like a brute if I so desire, but it also can be so smooth and nimble. It took less than 30 minutes to setup and incorporate into my HT rig. The phone app is such a great tool, and so helpful when setting up. From your listening sitting position, it can be tweaked to sound the best in no time.

This is really a great product...
June 24, 2019
Originally posted at
Looks great and sounds great.
I am thoroughly enjoying my new SVS SB 4000 which arrived mid-January 2019. It has the piano gloss black finish which looks as great as this premium subwoofer sounds. I have listened to a wide variety of music on vinyl, CD, MP3, cassette tape, etc. With patience, I found the best location for the sub in the room. Like many of you have reported, I can tell you my music has never sounded better. Realizing what good, accurate, and deep bass actually sounds like took a little time. The effort used to try to achieve a good setup of the system really pays off. The music appears to float on a wide and deep sound stage, while the speakers seem to disappear. The SVS App, the remote control, and the sub's front panel control buttons are so very welcome. They are a great convenience and joy to use.
The people at SVS have set lofty goals and have achieved them. A continual roll-out of outstanding products at affordable prices has made SV Sound pre-eminent in their field, in my opinion. It is important to remember: with SVS speakers and products you get SVS the company. Anyone you speak to in sales or customer service is friendly, patient, and know the answers to technical questions or any problems you may have. They are definitely customer oriented. The SB 4000 has exceeded my expectations, as have the talented people who stand behind their reputations. A heartfelt "thank you" to everyone at SV Sound.
April 16, 2019
Originally posted at
Adds fullness to music and impact to movies.
I am really enjoying this subwoofer. As the title of this review indicates, the subwoofer adds a fullness to music (the primary reason for the purchase) and I'm able to play music at a lower volume and still feel bass. For movies I'm able to feel the impact of action scenes which adds a sense of realism while watching. The reason for the 4 star review is due to the phone app. For some reason they need your location in order to use this app. They already have my money and my address now they need my whereabouts when using the phone app?! That is literally obnoxious and I refuse to install any app that requires location. Call me paranoid I don't care, all this location data is unnecessary...
March 19, 2019
Originally posted at
A pleasure so far
I've had this sub for about 9 months now and it has greatly increased my enjoyment of music. Sub arrived quickly, and was packed as well as anything that I have ever purchased. Set up is simple, once you man it into place. The phone app is really great-you don't have touch the unit once you connect it to power and the source. I'm very impressed.
March 15, 2019
Originally posted at


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