SB-4000 Subwoofer

SB-4000 Subwoofer

69 reviews
A top choice for home theater and audiophile music systems, the SB-4000 subwoofer delivers massive SPLs and extreme low frequency extension that will astonish even the most discerning listeners. A high-excursion 13.5-inch driver unleashes immense sonic energy while maintaining pinpoint control and accuracy from a 1,200 watts RMS, 4,000+ watts peak power amplifier featuring fully discrete MOSFET output and Analog Devices most advanced audio DSP. Precise tuning for the SB-4000 is enabled from a subwoofer DSP smartphone app with custom presets.

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SB-4000

HCReview - Reference Award
Sound & Vision - Top Pick of the Year 2018 Award
Audioholics - Product of the Year Award
Audio Reference - Recommended Audio Award
EISA Award - Best Product 2018-2019 - Home Theater Subwoofer
HomeTheaterReview.com - Best of 2018 Award
Stereophile - 2019 Recommended Component Award
AVSForum - Top Choice 2018 Award
Home Cinema Choice - Best Buy Award
Sound & Vision - Top Pick Award
Home Cinema Choice - Recommended Award

Product Overview

Chest-thumping slam and low frequency extension below the threshold of human hearing, with refined musicality – a level of subwoofer performance not seen at this price before. The SB-4000 subwoofer’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. An ideal option for reference quality bass in 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.

HCReview - Reference Award
Sound & Vision - Top Pick of the Year 2018 Award
Audioholics - Product of the Year Award
Audio Reference - Recommended Audio Award
EISA Award - Best Product 2018-2019 - Home Theater Subwoofer
HomeTheaterReview.com - Best of 2018 Award
Stereophile - 2019 Recommended Component Award
AVSForum - Top Choice 2018 Award
Home Cinema Choice - Best Buy Award
Sound & Vision - Top Pick Award
Home Cinema Choice - Recommended Award

User Reviews

Rob W. Reviews the SB-4000

"There a very few absolutes in the universe but I’ll add some to the list. I will absolutely buy only SVS subs for any and all my future subwoofers. Not only...

Press Reviews

HomeTheaterReview.com Reviews the SB-4000 Subwoofer

“Provided a solid, deep bass foundation with both music and movies…Shook and rattled my room with ease, a great multi-purpose subwoofer that balances brawn ...

AVReport.ru Reviews the SB-4000 Subwoofer (Russia)

"Brutal, but beautiful in its own way. Deep, smooth and superbly fast bass. Potent, clear and energetic with movies and pristinely natural with music. Output...

4000 Series Subwoofers Receive HCReview's Reference Award (French)

"Delivers linear bass with impressive pressure levels, while managing to maintain extremely low distortion rates. Visceral, agile and powerful performance. A...

Positive Feedback Reviews the SB-4000 Subwoofer

"Fast, tuneful bass, huge amounts of slam and infrasonic bass extension. A welcome dollop of gut level satisfaction. The subwoofer delivered high quality, hi...

SB-4000 Receives AVS Forum Top Picks 2018 Award

“TOTALLY pressurized my theater. With movies, I felt the power of explosions in my heart and head! Like I was getting hit with a sledgehammer in the chest! ...

SB-4000 Subwoofer Receives Stereoplay’s Highlight 2018 Award (Germany).

"Galactic good. Blended seamlessly with multiple speakers and it showed sovereignty in all aspects. Deep bass notes were crisp and clean with no overhang. I...

HXOS+ SoundVision (Greece) Review the SB-4000 Subwoofer

“The SB-4000 is a "scary" subwoofer full of energy. From the very first Hz onward, mainly felt in the chest and your belly, to the last ones around the cut-...

HomeCinemaMagazine.nl (Netherlands) Reviews the SB-4000 Subwoofer

"With the SB-4000 you get a subwoofer that is immensely powerful and dives very deeply - and that also works smoothly in large spaces. It is also incredibly...

SB-4000 Subwoofer Receives the EISA Best Product Award for Home Theater Subwoofers

"The SB-4000 is in a class of its own. This breathtaking subwoofer is capable of unleashing pure dynamics even with the very lowest subsonic frequencies and ...

SB-4000 Subwoofer Receives Audio Magazine's "Recommended Product" Award (Germany)

"Extended deep bass in the room with audiophile precision. The SVS SB-4000 executed the perfect bass storm – with power and yet easiness."

High Def Digest Reviews the SB-4000 Subwoofer

"An exceptional subwoofer capable of producing incredibly clean and powerful bass. The SB-4000 can really bring the thunder…slammed me with impressive impac...

SB-4000 and PB-4000 Subwoofers Receive Heimkino's Reference Class Award

"The SB-4000 subwoofer convinces with a crisp, precise reproduction of lowest frequencies. For the ultimate pressure in the diaphragm, the PB-4000 is partic...

Reference Home Theater Reviews the SB-4000 Subwoofer

"The SB-4000 does exactly what I want in a sub: make my speakers sound like they play down to 20Hz without any effort or strain by completely disappearing. ...

SB-4000 Subwoofer Receives Audio & Vision Online's Excellent Product Award

"The lowest octaves are rendered with incredible detail and power. From a relatively small cabinet, it produces more than enough output for a big home theat...

MissingRemote.com Reviews the SB-4000 Subwoofer

"Bass reproduction is effortless. Impressing with its power, and nuance. Energy you can feel fills the room. Response is instantaneous, tight, and controlled...

SB-4000 Subwoofer Receives the Home Cinema Choice Best Buy Award

"Genuinely subsonic, and its room-loading capabilities prove outstanding. Impossible to unsettle. Textbook definition of great home cinema bass; deep, clean ...

Video Magazine (Germany) Reviews the SB-4000 Subwoofer

"Outstanding value, unmatched sound quality, unique features and deep, full and clear bass, all controllable via a smartphone app and remote. The combination...

CNET Reviews the SB-4000 Subwoofer

"The SB-4000's bass was deep and powerful, bass transients were quick, and there was no thickening or bloat. Impact and dynamics were visceral. It enlarged t...

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Frequency Response / Acoustic Data:

SB-4000 Frequency Response Chart* Frequency response graph does not denote maximum output capability
  • 19-310Hz ± 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:

  • Premium Black Ash and Piano Gloss Black finish options
  • Protective non-resonant steel mesh grille
  • Front-firing 13.5" driver
  • Rear-mounted amplifier
  • Screw-in rubber feet
  • Robust Medium Density Fiberboard(MDF) cabinet construction
  • Cabinet Dimensions (without grille): 18.3” (465mm) H X 17.8” (453mm) W X 18.6” (471.3mm) D
  • Cabinet Dimensions (with grille): 18.3” (465mm) H X 17.8” (453mm) W X 20.9” (530mm) D
  • Shipped Dimensions: 23.5” (598mm) H X 23.5” (598mm) W X 28” (712mm) D
  • Weight (unboxed): 102.3 lbs. (46.4 kg)
  • Shipped Weight: 117.8lbs (53.45kg)

Driver Specs:

  • High-performance SVS 4000 Series Subwoofer Driver - optimized for sealed cabinet design.
  • Proprietary 13.5” Driver with finely tuned Overhung Motor Configuration
  • 43lb (19.5kg) pound Woofer with 37.7lb (17.1kg) pounds for the motor
  • Overhung 52mm Xmax, 76.2mm Xmech precision aligned excursion
  • 8-layer aluminum flat wire edge wound 3” voice coil for ultra-low distortion, efficient heat dissipation, exceptional linearity and nearly zero power compression.
  • Two massive, dedicated toroidal ferrite magnets generate unparalleled levels of magnetic force to drive the highest levels of excursion, SPL, and start/go power for the deepest and most authoritative bass possible.
  • All-new High density FEA-optimized cast aluminum basket provides unequaled levels of rigidity, tensile strength, and energy transference available from a subwoofer.
  • Dual 24-strand copper and Nomex composite high-temperature leads woven through the suspension provide a pristine electrical connection from the amplifier to the voice coil.
  • Premium glass fiber laminated dustcap and reinforced and vented paper-composite cone sub-structure ensure a light, rigid, and neutral radiating surface.
  • Precision machined motor elements and narrow tolerance suspension parts produce unmatched linearity at full excursion for exceptionally tight and fast output, even at reference volumes.
  • Extreme oversized low carbon vented steel U-yoke and top plate provide superior cooling and improved magnetics for maximum performance and efficiency.
  • Copper ring shorting sleeve reduces gap induction and distortion, enhances thermal conductivity
  • Nickel-plated high-tension spring terminals
  • Proprietary injection molded gasket and parabolic SBR extreme-excursion surround maintains ideal pistonic motion for pinpoint accuracy and control
  • Low carbon 1008 steel components with black electrophoresis plating

Amplifier Specs:

  • Massively powerful Sledge 1,200-watt continuous Class D design with 4,000+ watts of Peak Power.
  • Unmatched intelligence from user adjustable low pass, phase, polarity and room gain compensation with three parametric EQs and port tuning (Ported models only) for absolute best alignment with speakers and optimized performance in any room.
  • Groundbreaking SVS Bluetooth DSP control app for iOS and Android devices with three user presets allow custom tuning for every room and system.
  • High efficiency cool-running Class D switching topology with massive 32 Amp 600 Volt MOSFET’s result in lower EMI and highest efficiency while providing effortless power to produce SPLs and low frequency output with pristine clarity well beyond reference listening levels.
  • High resolution 50Mhz Analog Devices Audio DSP with double precision 56bit filtering is most advanced subwoofer processor available for perfect audio reproduction.
  • 100v-240v full range input active Power Factor Correction (PFC) pre-regulates mains to solid 360V DC regardless of mains voltage or quality so the sound quality never falters no matter what’s coming out of the wall
  • Active PFC lowers average current and smooths mains input current allowing for 1200W output from a standard 15A mains circuit.
  • XLR and RCA stereo input/output with ultra-wide input voltage for consumer and professional audio applications.
  • Convenient front-mounted display featuring new Intelligent Feature Control (IFC) with bright blue dimmable/defeatable 8-digit LED front display.
  • Custom EQ and DSP limiter settings tuned specifically for the SB-4000 sealed cabinet design.
  • Auto/On and 3-12V AC/DC trigger for Maximum Installation Convenience.
  • Input impedance 22kohm (unbalanced RCA)/ 22kohm (balanced XLR).
  • Green 0.5-watt low standby power consumption
  • RoHS compliant, lead-free construction, world-wide safety certifications

SVS App Specs:

  • The most powerful and flexible Bluetooth controlled subwoofer DSP app, works with both iOS and Android operating systems.
  • Easiest and most convenient way to adjust crossover frequencies, parametric EQ, polarity, room gain and all other bass management functions.
  • Three convenient custom presets allow for perfect tuning in any room or system, from your favorite seat.
  • Single tap adjustment for controlling variable port tuning with standard, extended and sealed modes.
  • Unique bidirectional feedback shows adjustments in real time on both app and subwoofer interface.
  • Easy-to-follow tutorial provides clear guidance for all functions.

Included Accessories:

  • Protective non-resonant steel mesh grill
  • IR remote control
  • Elastomer feet included
  • Extra heavy-duty, high current 6' power cord
  • Quick Start Guide
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Unparalleled Low Frequency Depth, Power and Detail

The SVS SB-4000 powered subwoofer demolishes all preconceived notions about subwoofer performance and technology by taking command of any room with deep, effortless bass and adding visceral energy to every listening experience. With trickle down technology from the 16-Ultra Series, named top subwoofers in the world by nearly every audio publication and industry group in 2017, the SB-4000 obliterates expectations and delivers a level of unrivaled subwoofer performance only available from SVS.

High-Excursion SVS Driver – Legendary SVS Output and Control

High-Excursion SVS Driver

The SB-4000 subwoofer delivers on the full potential 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.

Sledge Amplifier – Massive Output, Sophisticated DSP, Advanced Power Management

Sledge Amplifier

Rated conservatively at 1,200 watts RMS, and 4,000+ watts peak power, the SB-4000 Sledge STA-1200D amplifier uses 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 powered subwoofer manufacturer.

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

Efficiency of a Class D amplifier with the ability to move massive amounts of current through the fully discrete MOSFETs enabling immense output and precise control for 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.

Active Power Factor Correction (PFC) & Ground Loop Isolation

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.

SB-4000 Smartphone App – Easiest Way Ever to Manage Subwoofer DSP and Control

SB-4000 Smartphone App

Groundbreaking smartphone app works with Apple iOS® and Android® devices to unleash the full depth, force and nuance of the SB-4000 powered subwoofer 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

Click image to enlarge

Google App ITunes App Amazon App

Google Play and the Google Play logo are trademarks of Google Inc.

Acoustically Inert and Rigidly Braced Sealed Box Cabinet Design

Inlaid front panel display, rounded edges and a curved metal grille on the sealed box SB-4000 cabinet give it a refined yet commanding look that blends visually with home theaters and high-end audio systems. It’s sealed cabinet design results in tighter, more musical bass and make it significantly more compact than ported box subwoofers with similar specs.

  • 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.

Sound Expert Videos

How to Reduce Subwoofer Room Rattle, Vibrations and Bass Bleed

Anatomy of an SVS Subwoofer Driver

Comparing Ported vs. Sealed Subwoofers for Home Theater

Why Go Dual: Benefits and Placement of Multiple Subwoofers

Section Shadow
Subwoofer Matching Tool

Enter your speakers and the SVS Subwoofer Matching Tool will recommend suitable subwoofer matches as well as crossover frequency and low pass filter settings.

System Builder Tool

Personal SVS speaker and subwoofer system builder. Choose from preset home theater surround sound set-ups like 5.1, or custom build your own.

User Reviews | Press Reviews

Customer Reviews
4.9 Based on 69 Reviews
5 ★
94% 
65
4 ★
6% 
4
3 ★
0% 
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Filter Reviews:
FW
10/12/2021
Frank W.
US US

In a word....WOW!

I initially purchased an SB-3000 with which I had some communications and output difficulty. A replacement amp corrected the problems, but the speaker emitted a “white noise” that I felt too loud for my application. On the strength of a conversation I had with Ed Mullen of SVS, I upgraded to an SB-4000. There is simply no comparison. First, the 4000 is dead silent. Not quiet, DEAD SILENT. While the 3000 is an admirable performer, and may even outperform the 4000 in some parameters, there is a heft and ease of character with the 4000 that is extremely musical, if, by using that term, we mean quick, tonally accurate, flat, and dynamic (appropriately present even at low volumes). And when you want to show off your system with some pipe organ music, it’s nice to have a beast on tap. To make an automotive analogy, the 4000 strikes me as a big V-8, whereas the 3000 is a twin-turbo V6. Both great, but I prefer the under-stressed V-8. While I was happy with the bass performance of the 3000, it turns out the 4000 is an even better fit for me. It amply energizes a room that is 53’ long, with multiple listening positions at 12’, 24’, 36’, etc. The bass is equally distributed in all locations without any localization. I’m running both inputs at -6db using a 40hz crossover point with a 24db roll off with two B&W Nautilus N805’s. I only listen to music on this system, to include all genres. The SB-4000 replaced a "legacy" Velodyne HGS-12 that I purchased new 20 years ago. I was very happy with that sub, but now having lived with the 4000 for a while, I see that my listening environment was under-subbed. With the SB-4000 in place, the sonic signature of my entire system changed for the better, putting a little more, "Meat on the bone." Not so much different, just more of what I liked about my system in the first place, such as tone, timbre, and realism. I could not be more pleased.

BG
10/11/2021
Barry G.
US US

SB-4000

The SB-4000 is one of the smartest purchases that I've made. I was running a Revel Performa B15 for years until it finally needed to be replaced. I was a bit intrepid about replacing a $3k sub (with 1000 watt amp & 15" driver) with a $1,400 sub with 13.5" driver, but this SB-4000 has removed any doubt that I made the right choice. It's cleaner, tighter, and packs just as much punch as its (twice the price) replacement. Also, much easier to set up properly, and get it dialed in. I couldn't be happier with the decision to go with the SB-4000, and even though I was prepared to buy 2, I've found that just one SB-4000 more than gets the job done. Brilliant in every way!

JG
08/22/2021
Jay G.
US US

Unreal!!!!!!

Unreal!!!!!!

KH
08/03/2021
K. H.
GB GB

Great sb4000 and great service

I absolutely love my sb4000 but after 3 years the amplifier inside decided to cease working. After a chat straight away with a svs support guy he recommended me to get in touch with karma av, a UK distributor and i received a new amplifier for my sb4000 within 2 days with full instructions on how to install...... Great service from svs.!!

TN
06/28/2021
Tony N.
US US

This is my second SB4000

This is my second SB4000 add on to my music system to be dual sub. its sound wonderful and i love it. Thank you to SVS !

User Reviews | Press Reviews

HomeTheaterReview.com Reviews the SB-4000 Subwoofer

“Provided a solid, deep bass foundation with both music and movies…Shook and rattled my room with ease, a great multi-purpose subwoofer that balances brawn with finesse. The Goldilocks of subwoofers,...
Reviewer Logo

AVReport.ru Reviews the SB-4000 Subwoofer (Russia)

"Brutal, but beautiful in its own way. Deep, smooth and superbly fast bass. Potent, clear and energetic with movies and pristinely natural with music. Output from the SB-4000 is so...
Reviewer Logo

4000 Series Subwoofers Receive HCReview's Reference Award (French)

"Delivers linear bass with impressive pressure levels, while managing to maintain extremely low distortion rates. Visceral, agile and powerful performance. A nice tour de force!"
Reviewer Logo

Positive Feedback Reviews the SB-4000 Subwoofer

"Fast, tuneful bass, huge amounts of slam and infrasonic bass extension. A welcome dollop of gut level satisfaction. The subwoofer delivered high quality, high end sound that was right at...
Reviewer Logo

SB-4000 Receives AVS Forum Top Picks 2018 Award

“TOTALLY pressurized my theater. With movies, I felt the power of explosions in my heart and head! Like I was getting hit with a sledgehammer in the chest! These subs...
Reviewer Logo

SB-4000 Subwoofer Receives Stereoplay’s Highlight 2018 Award (Germany).

"Galactic good. Blended seamlessly with multiple speakers and it showed sovereignty in all aspects. Deep bass notes were crisp and clean with no overhang. Its high dynamic reserves gave the...
Reviewer Logo

HXOS+ SoundVision (Greece) Review the SB-4000 Subwoofer

“The SB-4000 is a "scary" subwoofer full of energy. From the very first Hz onward, mainly felt in the chest and your belly, to the last ones around the cut-off...
Reviewer Logo

HomeCinemaMagazine.nl (Netherlands) Reviews the SB-4000 Subwoofer

"With the SB-4000 you get a subwoofer that is immensely powerful and dives very deeply - and that also works smoothly in large spaces. It is also incredibly fast, so...
Reviewer Logo

SB-4000 Subwoofer Receives the EISA Best Product Award for Home Theater Subwoofers

"The SB-4000 is in a class of its own. This breathtaking subwoofer is capable of unleashing pure dynamics even with the very lowest subsonic frequencies and pinpoint LFE precision from...
Reviewer Logo

SB-4000 Subwoofer Receives Audio Magazine's "Recommended Product" Award (Germany)

"Extended deep bass in the room with audiophile precision. The SVS SB-4000 executed the perfect bass storm – with power and yet easiness."

High Def Digest Reviews the SB-4000 Subwoofer

"An exceptional subwoofer capable of producing incredibly clean and powerful bass. The SB-4000 can really bring the thunder…slammed me with impressive impact…just about shook the walls of my house apart...
Reviewer Logo

SB-4000 and PB-4000 Subwoofers Receive Heimkino's Reference Class Award

"The SB-4000 subwoofer convinces with a crisp, precise reproduction of lowest frequencies. For the ultimate pressure in the diaphragm, the PB-4000 is particularly suitable, because it provides even greater dynamic...

Reference Home Theater Reviews the SB-4000 Subwoofer

"The SB-4000 does exactly what I want in a sub: make my speakers sound like they play down to 20Hz without any effort or strain by completely disappearing. It offers...
Reviewer Logo

SB-4000 Subwoofer Receives Audio & Vision Online's Excellent Product Award

"The lowest octaves are rendered with incredible detail and power. From a relatively small cabinet, it produces more than enough output for a big home theater and its tight and...
Reviewer Logo

MissingRemote.com Reviews the SB-4000 Subwoofer

"Bass reproduction is effortless. Impressing with its power, and nuance. Energy you can feel fills the room. Response is instantaneous, tight, and controlled but never overpowering. The build quality is...
Reviewer Logo

SB-4000 Subwoofer Receives the Home Cinema Choice Best Buy Award

"Genuinely subsonic, and its room-loading capabilities prove outstanding. Impossible to unsettle. Textbook definition of great home cinema bass; deep, clean and fast, and easily integrated with your speaker system. A...
Reviewer Logo

Video Magazine (Germany) Reviews the SB-4000 Subwoofer

"Outstanding value, unmatched sound quality, unique features and deep, full and clear bass, all controllable via a smartphone app and remote. The combination of maximum technical features and audio performance...
Reviewer Logo

CNET Reviews the SB-4000 Subwoofer

"The SB-4000's bass was deep and powerful, bass transients were quick, and there was no thickening or bloat. Impact and dynamics were visceral. It enlarged the soundstage. A reference-grade subwoofer...
Reviewer Logo

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