Born from three decades of SVS design expertise, the PB17-Ultra R|Evolution subwoofer represents the pinnacle of subwoofer performance. Featuring a massive 17" driver with dual 8" coils, powered by a powerful amplifier with DSP intelligence, the subwoofer incorporates advanced power management and auto EQ room correction. The benchmark for reference subwoofer experiences has arrived. Experience breathtaking low frequencies with unerring accuracy, room-shaking output, and stop-on-a-dime control. From the deep, chest-thumping slam of cinematic soundtracks to the delicate nuance of musical bass, every note is rendered truthfully. Whether heard or felt, low frequencies are delivered effortlessly without sacrificing sonic fidelity or refinement. With extension down to 12Hz, below the threshold of human hearing, the PB17-Ultra R|Evolution brings sound to life with visceral, jaw-dropping impact.

• High-excursion 17" driver: The glass fiber composite cone, combined with a 55 lb. toroidal ferrite magnet motor assembly, delivers massive low-frequency output down to 13Hz with pinpoint accuracy and control.
• Acoustically tuned triple-ported cabinet design: Three 4” ports optimize airflow, while rigid internal bracing ensures a resonance-free environment for uncompromised subwoofer performance.
• 8" dual voice coils: The dual voice coil design ensures stable and consistent transfer of motor electromagnetic energy to the 17" cone to maintain precise driver control with maximum efficiency.
• Dual mono amplifier: Each of the two Class-D mono-block amplifiers, featuring MOSFET output stages, powers one of the dual voice coils, doubling the current fed to the driver. This design achieves effortless output while reducing continuous current demand from the home’s AC circuit.
• Switch mode power supply: Time-aligns the AC voltage with the AC current, while filtering and stabilizing incoming voltage to optimize signal quality and audio performance.
• 295MHz DSP: The advanced processor optimizes every aspect of subwoofer output and usability to maintain flawless performance and intuitive control.
• Smartphone app: Provides a convenient way to control all DSP functions, including volume, six-band parametric equalizer, low-pass filter, phase, polarity, room gain, port tuning, system settings, custom presets, and auto room EQ.