SVS SB-17 Ultra R|Evolution 17" sealed subwoofer

SVS SB17-Ultra R|Evolution Sealed Subwoofer

SVS SB17-Ultra R|Evolution is a flagship sealed subwoofer engineered for reference home theater and Hi-Fi system playback. It combines a massive 17-inch high-excursion driver with dual 8-inch voice coils, a STA-2800D dual-monoblock Class D amplifier rated at 2,800 watts RMS and 6,000+ watts peak, and an advanced 295MHz Analog Devices DSP.

With a frequency response of 15Hz to 320Hz ±3dB, SB17-Ultra R|Evolution is engineered to deliver breathtaking low frequencies with accuracy, musicality and precise control for both cinematic soundtracks and music.

Key Features

• 17-inch high-excursion driver with lightweight and rigid glass fiber composite cone.
• Dual 8-inch, 4-layer bifilar voice coils for efficient power transfer and precise driver control.
• STA-2800D dual-monoblock Class D amplifier rated at 2,800 watts RMS and 6,000+ watts peak.
• Eight 60 Amp, 200 Volt MOSFETs for extreme high-current output.
• 295MHz Analog Devices DSP for advanced signal processing and system management.
• 120 dB Signal-to-Noise Ratio DACs for greater headroom, lower noise and pristine fidelity.
• 15Hz to 320Hz ±3dB frequency response.
• SVS Auto EQ room correction for optimized in-room bass response.
• SVS Subwoofer Control App for convenient smartphone tuning and management.
• Six parametric equalizers, phase, polarity, low-pass filter, room gain compensation and more.
• Power-Factor-Correction (PFC) and advanced switch-mode power supply.
• Robust MDF cabinet with internal bracing.
• Rear-panel OLED interface with Display Flip function.

Effortless Output from High-Excursion 17-inch SVS Driver

SB17-Ultra R|Evolution features the largest driver ever deployed in an SVS subwoofer. Its lightweight and rigid 17-inch glass fiber composite cone provides an optimal stiffness-to-mass ratio for maximum efficiency and acoustic linearity.

A four-piece toroidal ferrite electromagnetic motor generates massive force with precise control, while an extreme-excursion catenary SBR rubber surround maintains pure, long-throw pistonic driver motion.

Revolutionary Dual 8-inch Voice Coils

Dual 8-inch voice coils ensure stable transfer of electromagnetic current to the 17-inch driver for authoritative output and precise driver control. Four-layer bifilar dual voice coils conduct power from the dual-mono amplifier to the motor with high thermal efficiency.

Copper-clad aluminum voice-coil wire combines thermal capacity and magnetic field strength, while dual shorting rings reduce gap inductance and lower distortion.

Dual Mono STA-2800D Amplifier

The STA-2800D features dual monoblock Class D amplifiers with discrete MOSFET output stages and is rated at 2,800 watts RMS and 6,000+ watts peak.

Each amplifier drives one of the dual 8-inch voice coils within the motor to maximize power transfer and driver control. Eight 60 Amp, 200 Volt MOSFETs provide extreme high-current capability for reference-level output with maximum efficiency.

Performance-Enhancing Switch Mode Power Supply

An onboard AC line conditioner filters and stabilizes incoming voltage, corrects waveform distortions and reduces electromagnetic and radio-frequency interference. The system maintains a clean and consistent 160V rail voltage for optimal power delivery from a standard 15-amp home circuit.

Power-Factor-Correction (PFC) time-aligns AC voltage and current for less heat, greater efficiency and reliable peak power output across a wide range of voltages.

Extreme Subwoofer Intelligence – 295MHz Analog Devices DSP

A sophisticated 295MHz Analog Devices DSP orchestrates the amplifier, motor and driver ecosystem. It accurately shapes in-room frequency response while monitoring amplifier operation, temperature, voltage and current.

Advanced digital audio processing and DACs with a 120 dB Signal-to-Noise Ratio provide greater headroom, lower noise and pristine fidelity.

SVS Auto EQ Room Correction

SVS Auto EQ analyzes the listening environment and optimizes subwoofer output for the specific room using the SVS Subwoofer Control App and a smartphone microphone or optional external SVS Auto EQ microphone.

It provides optimized performance across multiple listening positions, improved frequency response and tonal accuracy, acoustically optimized room gain and reduced peaks, nulls and localization caused by room acoustics.

SVS Subwoofer Control App

Compatible with Apple iOS, Google Android and Amazon Fire platforms, the SVS Subwoofer Control App provides convenient subwoofer tuning and management.

Controls include volume, low-pass filter, phase, polarity, six parametric equalizers, room gain compensation, tuning modes, power management settings and more. Three memory presets allow fast system adjustments for music, movies, night mode and other listening preferences.

Robust Sealed Cabinet

The SB17-Ultra R|Evolution features a robust Medium Density Fiberboard (MDF) cabinet with internal bracing for resonance-free performance at high drive levels. A protective non-resonant extra-thick ABS grille frame with fabric mesh shields the front-firing 17-inch driver.

Screw-in Iso-elastomer feet reduce noise artifacts and improve stability, while the rear-panel OLED interface provides direct access to important controls and includes a convenient Display Flip function.

Extension to 15Hz

SB17-Ultra R|Evolution delivers a frequency response of 15Hz to 320Hz ±3dB. Its roll-off slope is specifically optimized to take maximum advantage of available room gain.

The combination of a massive 17-inch high-excursion driver, dual 8-inch voice coils, 2,800-watt RMS amplifier, advanced DSP and SVS Auto EQ creates a reference subwoofer system engineered for effortless low-frequency output with precision and control.