SVS PB-1000 PRO black ash

SVS PB-1000 PRO: bass-reflex subwoofer

Bass should reach deep, respond quickly and stay clean. The SVS PB-1000 PRO, the dual-port bass-reflex version of the 1000 Pro series, aims for this balance between extension, power and control. The direct successor to the PB-1000, it replaces the original’s 25 cm driver with a completely redesigned 30 cm unit, gains more powerful Sledge amplification and inherits the brand’s Bluetooth app.

A completely reworked 30 cm driver

The transducer has been redesigned from the ground up. Diameter increased to 30 cm, a lightweight, rigid fiber-composite cone, an injection-molded ultra-long-excursion surround, a high-power dual ferrite motor and a dual-layer voice coil: every component is sized to move large amounts of air without sacrificing linearity. The basket itself has been optimized using finite element analysis (FEA), a simulation method used in mechanical engineering to map stresses across a structure and identify its weak points before manufacturing. In terms of excursion, SVS specifies an Xmax of 13.1 mm (maximum linear excursion) and an Xmech of 26.8 mm (mechanical travel before reaching the limit), figures that give the cone the headroom needed to handle LFE peaks in movie soundtracks without clipping.

Sledge STA-325D amplification and integrated DSP

In control is a Class D Sledge STA-325D with high-current discrete MOSFETs, rated at 325 W continuous RMS and just over 820 W dynamic peak power. The high-efficiency LLC power supply limits heat buildup during sustained use, while a 50 MHz / 56-bit Analog Devices DSP manages filtering, limiting and the subwoofer’s specific equalization curve. This is the same amplifier + DSP signal-chain approach used in the brand’s higher-end models, brought to a more affordable format.

Bass-reflex cabinet with dual front ports

The bass-reflex enclosure uses two 6.35 cm (2.5-inch) front ports positioned below the driver. The cabinet is made from thick MDF with internal bracing and acoustic insulation. Iso-elastomer feet decouple the subwoofer from the floor, helping to limit vibration transmission to neighboring rooms, particularly on wooden floors. The anti-resonance ABS protective grille clips onto the front and can be removed to expose the driver and ports, a look some may prefer aesthetically.

Frequency response and port plugs

Frequency response extends from 17 Hz to 260 Hz at ±3 dB in bass-reflex mode (ports open). Inserting the two supplied foam plugs switches the subwoofer to sealed mode, with a response of 19 Hz to 260 Hz at ±3 dB, a more gradual roll-off and bass generally perceived as tighter. The choice depends on the material: action movies, video games and music with very deep bass benefit from the bass-reflex mode’s usable 17 Hz extension, while some music listening gains clarity in sealed mode, at the cost of two hertz of extension. Both configurations remain available without hardware modifications, allowing experimentation to suit the room and content.

App control and physical controls

The SVS app for iOS and Android communicates with the subwoofer via Bluetooth. It provides access to volume, a low-pass filter adjustable in 1 Hz increments, phase adjustable from 0° to 180°, polarity, room gain compensation and a three-band parametric equalizer. Three customizable presets can be freely named according to use (music, movies, video games, late-night listening at reduced volume), with real-time visual feedback on the amplifier’s LED-bar IFC interface. Physical controls for level, low-pass filter, phase and auto/on mode remain available on the back of the subwoofer for basic adjustments without a smartphone.

Connectivity and system integration

The rear panel offers stereo RCA line inputs and outputs, a speaker-level input on binding posts (useful with an integrated amplifier lacking a dedicated subwoofer output), a 3–12 V trigger input and a USB power port for the optional SVS SoundPath wireless adapter. The power cable is detachable. Auto/on mode switches the subwoofer to standby at less than 0.5 W whenever no signal is detected, in compliance with the European ErP directive on standby power consumption.

Technical specifications

Cabinet design

• Dual 2.5-inch (6.35 cm) bass-reflex type
• Thick MDF construction with internal bracing
• Internal acoustic insulation
• Anti-resonance ABS protective grille
• Anti-vibration iso-elastomer feet
• Detachable power cord

Driver

• Diameter: 30 cm (12 inches)
• Lightweight, rigid fiber composite cone
• Injected very long-throw surround
• Dual high-power ferrite motor
• High-power dual-layer voice coil for improved linearity
• Reinforced chassis optimized by finite element analysis (FEA)
• Excursion:
  • Xmax: 13.1 mm
  • Xmech: 26.8 mm
• Benefits:
  • Deep, controlled bass
  • Extremely low distortion
  • Fast, precise response
  • High sound pressure level (SPL)

Sledge STA-325D amplification

• Class D amplification with high-current discrete MOSFETs
• Continuous RMS power: 325 W
• Peak dynamic power: 820 W and more
• Analog Devices 50 MHz / 56-bit DSP processor
• High-efficiency LLC power supply
• Advanced bass control and optimized DSP limiting

DSP functions

• Crossover filter adjustment
• 3-band parametric equalizer
• Adjustable phase control from 0° to 180°
• Room gain compensation
• Polarity adjustment
• Customizable presets

Frequency response

• Standard mode: 17 Hz to 260 Hz ± 3 dB
• Sealed mode: 19 Hz to 260 Hz ± 3 dB
• Optimized to take advantage of the acoustic gain of domestic rooms

Connectivity

• Stereo line input (RCA)
• Stereo line output (RCA)
• Stereo high-level input on binding posts
• 3 to 12 V trigger input
• USB power port for SVS wireless accessory

Rear controls

• Level
• Low-pass filter
• Phase
• Auto / on mode

SVS smartphone app

• Bluetooth control from an iOS or Android smartphone
• Remote volume control
• Customizable music / cinema / gaming presets
• Precise adjustment down to the nearest Hz
• 3-band parametric equalizer
• Real-time feedback
• Simple and intuitive interface

Dimensions and weight

• Dimensions with grille (W × H × D): 380 × 479 × 509 mm
• Depth without grille: 488 mm
• Net weight: 19.3 kg
• Shipping weight: 23.4 kg

Power consumption

• Economy standby mode: consumption below 0.5 W

Included accessories

• Protective grille
• Iso-elastomer feet
• 2 port plugs
• 1.8 m power cable
• Quick start guide