SVS SB-4000 Powered 1200 W 13.5″ Subwoofer – Black Ash

Brand: SVS
Model Number: SB-4000 BLACK ASH
Model Number: SB-4000 BLACK ASH
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SVS SB-4000 Powered 1200 W 13.5″ Subwoofer – Black Ash

  • Front Firing long-stroke 13.5” driver
  • STA-1200D Sledge, 1,200 watt (4,200 watts peak) amplifier
  • Premium Black Ash or Piano Gloss Black Finish
  • Protective, Non- Resonant Steel Mesh Grille
  • Rigid and Braced MDF Cabinet
  • 19-310Hz +/- 3 dB
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Product Description

Features & Specifications



SVS SB-4000 Powered 1200 W 13.5″ Subwoofer with App Control – Black Ash

SVS SB-4000 energizes a space with effortless output, subterranean deep bass extension, and stunning musicality. SB-4000 sets all performance benchmarks for sealed subwoofers in its class and brings immersive home audio experiences to life.

The SVS SB-4000 Powered Subwoofer in Black Ash boasts impressive specifications that make it a top-performing audio device. The front-firing 13.5-inch long-stroke driver, paired with a powerful STA-1200D Sledge amplifier, delivers 1,200 watts of continuous power and peaks at 4,200 watts, providing deep, precise, and articulate bass frequencies. The subwoofer comes in a rigid and braced MDF cabinet, which helps to minimize vibrations and provide exceptional clarity. Additionally, it has a protective non-resonant steel mesh grille and is available in either a premium Black Ash or Piano Gloss Black finish. The SB-4000 has a frequency response range of 19-310Hz +/- 3 dB, and with its dimensions of 18.3″ H x 17.8″ W x 20.9″ D and weight of 102.3 lbs., it is a sturdy and substantial addition to any home theater or audio setup.

SB-4000 lifestyle


With refined musicality, the SB-4000 subwoofer delivers a level of performance that is unprecedented at this price point. It boasts chest-thumping slam and low-frequency extension that is below the threshold of human hearing, providing a truly immersive audio experience. Its sophisticated DSP amplifier and innovative driver, along with a sealed box design, master room gain, and enable it to command any space with deeper bass and higher output levels than most subwoofers of its size. The SB-4000 sets the performance benchmarks for a subwoofer and is an ideal option for anyone seeking reference-quality bass in their audiophile music or home theater systems. It’s an outstanding product that leaves larger and more expensive subs trembling in its wake.

Unparalleled Low Frequency Depth, Power and Detail

The SB-4000 powered subwoofer redefines the standards of subwoofer performance and technology. It is designed to deliver deep and effortless bass, adding a new level of visceral energy to your listening experience, regardless of the size of the room. Featuring trickle-down technology from the award-winning 16-Ultra Series, which has been named the top subwoofers in the world by nearly every audio publication and industry group in 2017, the SB-4000 is unrivaled in subwoofer performance. With its exceptional features and design, it surpasses expectations, providing a level of audio quality that is only available from SVS.

SB-4000 driver

High-Excursion SVS Driver – Legendary SVS Output and Control

With precision and control, the SB-4000 subwoofer unleashes the full potential of the Sledge STA-1200D amplifier’s power, producing energizing SPLs and effortless low-frequency extension with pinpoint accuracy at all drive levels.

  • Dual ferrite magnet motor assembly, weighing almost 40lbs, generates immense magnetic force and excursion of the 13.5-inch driver, producing massive low-frequency output that goes well below the limits of human hearing.
  • Edge-wound voice coil, with an 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, along with the premium glass fiber dustcap, generates massive output with pinpoint accuracy frequency response.
  • Proprietary injection-molded gasket and long-throw parabolic surround ensure longevity and allow extreme excursion and SPLs, making the SB-4000 subwoofer a perfect option for audiophiles and home theater enthusiasts who demand exceptional sound quality.

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

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.

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.

SB-4000 Smartphone App – 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 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

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Brand SVS   Model SVS SB-4000 BLACK ASH
Product: SVS SB-4000 Powered 1200 W 13.5" Subwoofer - Black Ash
Frequency Response / Acoustic Data

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

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.


Protective non-resonant steel mesh grill
IR remote control
Elastomer feet included
Extra heavy-duty, high current 6' power cord
Quick Start Guide

What's in the box

SVS SB-4000 owner's manual
Powered subwoofer
6' AC power cord
Remote control
4 Elastomer feet
Owner's Manual
Important Safety Instructions

Home Subwoofer RMS

1000W – 1999W

Home Subwoofer Size



Black Ash

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SVS Sound Revolution Canada 5 Year Limited Warranty


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