TODD'S BEATS

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Color

Glossy Black

Black Ash

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A ported 13.5-inch subwoofer with a 1,200-watt RMS Sledge amplifier, three port-tuning modes and Bluetooth app control. SVS rates it at 16Hz to 200Hz (±3dB) in standard mode.

The SVS PB-4000 comes from the SVS 4000 Series. It has XLR and RCA inputs, a front display and a three-band parametric EQ. SVS says it uses technology from its 16-Ultra Series.

Driver

13.5" front-firing

Amplifier

1,200W RMS, 4,000W+ peak

Frequency response

16 – 200Hz ±3dB (standard)

Cabinet

Ported, three 3.5" ports

Size (H × W × D)

59.5 × 52.0 × 76.3 cm

Weight

69.5 kg

SVS 4000 Series technology

Why you will love it

13.5-inch high-excursion driver

SVS describes a 13.5-inch driver with a dual ferrite magnet motor weighing nearly 40lb, a composite cone, a glass-fibre dustcap and a long-throw parabolic surround.

The edge-wound voice coil uses eight-layer aluminium flat wire. SVS lists 53mm Xmax and 91.6mm Xmech.

SVS PB-4000 subwoofer front view with steel mesh grille

Sledge STA-1200D amplifier

The Class D amplifier is rated at 1,200 watts RMS and 4,000+ watts peak. It has fully discrete MOSFET output and a 50MHz Analog Devices DSP with 56-bit filtering.

Active power factor correction lets it run from a standard mains circuit, SVS says.

Three port-tuning modes

Three foam port plugs come in the box. SVS offers standard, extended and sealed modes, each with its own response curve in the DSP.

SVS rates the response at 16 – 200Hz in standard mode, 13 – 200Hz in extended mode and 18 – 200Hz in sealed mode, all ±3dB.

SVS PB-4000 subwoofer in piano gloss black with three front ports, in a living room

App, remote and display

The SVS app connects over Bluetooth on iOS and Android. It controls volume, three-band parametric EQ, low pass, phase, polarity, room gain, port tuning and three custom presets.

There is also an IR remote and a front-panel display. Changes show on both the app and the display.

Braced MDF cabinet

The cabinet is MDF with a double-thick 2-inch front baffle and internal bracing. It has three front-firing 3.5-inch ports, a steel mesh grille and screw-in elastomer feet.

It comes in Piano Gloss Black or Premium Black Ash.

Is it right for you?

A great fit if you…

Want deep, extended bass for a larger home theatre or music room
Like tuning with an app, presets and three port modes
Have room for a cabinet about 60cm high and 76cm deep
Might add a second subwoofer later

Worth knowing

It weighs 69.5 kg unboxed, so plan placement and lifting before it arrives
It connects by RCA or XLR line-level input, so you need a subwoofer or pre-out on your receiver or amplifier

Build your system

SVS says two subwoofers give a smoother frequency response at more listening positions.

Home theatre: Connect to an AV receiver's subwoofer output
Stereo: Pair with a stereo amplifier and floor-standing speakers or bookshelf speakers
Same range: SVS PB16-Ultra ported subwoofer is the larger 16-inch model
Isolation: SVS SoundPath subwoofer isolation system is listed by SVS for the PB-4000 (six-foot set)
Go dual: Add a second PB-4000 for smoother bass across the room

Specifications

Driver and amplifier

Driver	13.5" front-firing, dual ferrite magnet motor, 3" edge-wound voice coil
Excursion	53mm Xmax, 91.6mm Xmech
Amplifier	Sledge STA-1200D, Class D, 1,200W RMS (4,000W+ peak)
DSP	50MHz Analog Devices, 56-bit filtering
Frequency response, standard	16 – 200Hz ±3dB
Frequency response, extended	13 – 200Hz ±3dB
Frequency response, sealed	18 – 200Hz ±3dB
Enclosure	Ported MDF, three 3.5" ports

Connections and controls

Inputs and outputs	RCA and XLR stereo input and output
Input impedance	22kΩ (RCA and XLR)
Trigger	Auto/On and 3–12V AC/DC trigger
Control	Bluetooth app (iOS, Android) with three presets, IR remote, front display
Standby power	0.5W

Design

Finish	Piano Gloss Black or Premium Black Ash
Dimensions with grille (H × W × D)	595 × 520 × 763 mm
Dimensions without grille (H × W × D)	595 × 520 × 704 mm
Weight (unboxed)	69.5 kg

Included

In the box	Steel mesh grille, IR remote control, three foam port plugs, elastomer feet, 6ft (1.8m) power cord, quick start guide

Specifications from SVS, checked November 2026.

What is in the box

SVS PB-4000 subwoofer
Steel mesh grille
IR remote control
Three foam port tuning plugs
Elastomer feet
Power cord
Quick start guide

Questions people ask

Does it have an app?

Yes. The SVS app connects over Bluetooth for iOS and Android. It has three presets, a three-band parametric EQ, low pass, phase, polarity, room gain and port tuning.

How do I connect it?

Use the RCA or XLR input from a subwoofer output or pre-out. A 3–12V trigger input can switch it on with your system.

How deep does it go?

SVS rates it at 16 – 200Hz ±3dB in standard mode and 13 – 200Hz ±3dB in extended mode, measured on a 2-metre ground plane.

What are the port plugs for?

The three foam plugs set the port tuning. SVS offers standard, extended and sealed modes, each with its own response curve.

Should I get two?

SVS says two subwoofers give a smoother response at more listening positions and more headroom.