SVS PB-Ultra R | Evolution - Gloss black - Black oak

Description

Reference-Grade Ported Subwoofer Architecture
The PB17-Ultra R|Evolution is engineered as a reference-standard ported subwoofer, delivering extreme low-frequency extension, high output, and precise transient control for high-performance home theater and music systems. A proprietary 17-inch front-firing high-excursion driver is coupled with triple high-flow 4-inch ports and a heavily braced MDF cabinet to maintain resonance-free performance even at reference listening levels. The system achieves extension down to 12 Hz in extended mode and up to 320 Hz in sealed mode, with roll-off characteristics specifically optimized to leverage room gain for greater in-room impact and linearity across multiple tuning configurations.

High-Excursion 17-Inch Driver and Motor System
At the core of the PB17-Ultra R|Evolution is an all-new 17-inch glass-fiber composite cone with an optimal stiffness-to-mass ratio that preserves linearity under extreme excursion. The driver assembly incorporates a 55 lb four-piece Y35 ferrite electromagnetic motor with 48.9 mm Xmax and 81.78 mm Xmech, ensuring the woofer can move massive volumes of air while maintaining pistonic motion and low distortion. Dual Nomex extreme-excursion spiders, a proprietary catenary SBR rubber surround, and a high-density 17-inch cast aluminum basket work together to deliver chest-compressing sound pressure levels with accurate, low-distortion bass. An 8-inch diameter, 4-layer bifilar copper-clad aluminum voice coil on a high-temperature glass-fiber former efficiently transfers power from the amplifier to the motor for consistent thermal performance and headroom.

Dual-Mono STA-2800D Amplification and Power Supply
Powering the driver is the STA-2800D dual-mono Class D amplifier, deploying two discrete mono-block amplifier stages, each driving one of the dual voice coils for maximum control and power transfer. Eight MOSFETs supply extremely high current with low EMI and high efficiency, enabling output well beyond reference listening levels without compression. A new switch mode power supply with active Power Factor Correction delivers a stable 160 volts rail to the dual-mono amplifiers, ensuring peak performance regardless of mains quality. Integrated AC line conditioning filters and stabilizes the incoming voltage, corrects waveform distortions, and suppresses electromagnetic and radio-frequency interference for cleaner signal integrity.

Advanced 295 MHz DSP and Intelligent System Management
A 295 MHz Analog Devices DSP with double-precision 56-bit filtering orchestrates all amplifier and driver functions to maintain pristine low-frequency reproduction. The DSP continuously monitors thermal, voltage, and current parameters while running complex power management algorithms to optimize AC delivery and maximize efficiency and output. High-resolution DACs with a 120 dB signal-to-noise ratio provide low noise and high headroom, enabling accurate shaping of in-room frequency response and precise limiting tailored to the 17-Ultra platform. User-adjustable parameters such as volume, low-pass filter, phase, polarity, parametric EQ, and room gain compensation are implemented in the digital domain to ensure repeatable, fine-grained tuning.

App-Controlled Tuning 
The PB17-Ultra R|Evolution integrates with the SVS Subwoofer Control app on Apple iOS, Google Android, and Amazon Fire platforms, allowing intuitive, bidirectional control of all key functions from the listening position. Users can set three custom presets for scenarios such as music, movies, and night mode, and adjust tuning modes, power management, and parametric EQ directly from the app. Variable port tuning using included foam plugs enables Standard, Extended, and Sealed modes, allowing the user to prioritize maximum output, deeper extension, or faster transient response. 

Industrial Design, Connectivity, and Installation
The subwoofer is available in real-wood veneer finishes to integrate with premium AV environments while the protective non-resonant ABS grille with fabric mesh preserves driver safety without compromising acoustic performance. Dimensions with grille are 25.0" x 21.7" x 29.3", with an unboxed weight of 164.7 lb, supported by screw-in Iso-elastomer feet to enhance stability and reduce mechanical noise transfer. Rear-panel connectivity includes unbalanced RCA and balanced XLR inputs, a 3.5 mm trigger input, 3.5 mm IR input, and a USB power output for wireless audio accessories. An OLED display with a control interface provides direct local control, while a convection-based cooling plate design eliminates external heatsinks and maintains reliable operation with low standby power consumption.

Frequently asked questions

Is the SVS PB17-Ultra R|Evolution designed primarily for home theater?
Yes. Its large ported cabinet and extreme low-frequency extension make it particularly well suited for high-impact home theater systems and large listening spaces.

How powerful is the amplifier in the PB17-Ultra R|Evolution?
The STA-2800D amplifier delivers 2,800 watts RMS and more than 6,000 watts of peak dynamic power for massive output and headroom.

How deep can the PB17-Ultra R|Evolution play?
The subwoofer reaches down to 12 Hz (±3 dB), allowing it to reproduce the deepest cinematic bass effects with remarkable authority.

What's in the Box:

PB17-Ultra R|Evolution subwoofer
Protective non-resonant ABS grille 
Iso-elastomer feet
Three foam port tuning plugs
Extra heavy-duty 6' high-current power cord
Quick Start Guide