SVS SB17-Ultra R|Evolution 17" Sealed Subwoofer

SB17-Ultra R|Evolution

A quantum leap forward in design and performance with multiple groundbreaking innovations - the most formidable and sophisticated sealed subwoofer ever developed.

All-new 17-inch driver with first-ever dual 8-inch voice coils. The most powerful amplifier ever deployed in a consumer subwoofer with unprecedented dual mono-block design married to the extreme intelligence of a 295MHz DSP. All managed by the most sophisticated subwoofer control app, now with auto EQ room correction (available soon via over-the-air update).

Born from three decades of SVS design expertise, SB17-Ultra R|Evolution is the pinnacle of subwoofer performance. A massive 17-inch driver with first ever dual 8-in voice coils driven by the most powerful amplifier ever deployed in a consumer subwoofer with DSP intelligence far beyond anything available. All married to advanced power management and auto EQ room correction. The benchmark for reference subwoofer experiences has arrived.

Breathtaking low frequencies with unerring accuracy, musicality, and stop-on-a-dime control. The deep, chest-thumping slam of cinematic soundtracks and the delicate nuance of musical bass always rendered truthfully.

Whether heard or felt, low frequencies are handled effortlessly without sacrificing sonic fidelity and refinement. With extension to 15 Hz, far below the threshold of human hearing SB17-Ultra R|Evolution brings sound to life with convincing, visceral, and jaw-dropping impact.

17-Ultra Series Technology

A Quantum Leap Forward in Subwoofer Design and Performance

High-Excursion 17-Ultra R|Evolution Driver

17-inch glass fibre composite cone with 55 lb toroidal ferrite magnet motor assembly render massive low frequency output down to 15 Hz with pinpoint accuracy and control.

8-inch Dual Voice Coils

Dual voice coil design ensures stable and consistent transfer of motor electro-magnetic energy to the 17-inch cone to maintain precise driver control with maximum efficiency.

Dual Mono Amplifier

Each of the two Class-D mono-block amplifiers with MOSFET output stages drives one of the dual voice coils to double the amount of current being fed to the driver achieving effortless output with lower continuous current demand from a home’s AC circuit.

Switch Mode Power Supply

Time aligns the AC voltage to the AC current while filtering and stabilising incoming voltage to optimise signal quality and audio performance.

295 MHz Analogue Devices DSP

The most advanced processor ever used in a consumer subwoofer optimises every aspect of subwoofer output and usability to maintain flawless performance and intuitive control.

SVS Subwoofer Control Smartphone App

Most convenient way to control all DSP functions, including: volume, 6-band parametric equaliser, low pass filter, phase, polarity, room gain, port tuning, system settings, custom presets, and auto room EQ.

Acoustically Tuned Sealed Cabinet Design

Sealed cabinet with double thick MDF and rigid internal bracing creates a resonance-free environment for pitch-perfect accuracy free from resonances and coloration.

Effortless Output from High-Excursion 17-inch SVS Driver

It was a ground-up process designing the largest, most formidable driver ever deployed in an SVS subwoofer. An all-new dual voice coil, suspension, basket, and extreme-excursion surround achieve chest-compressing sound pressure levels with flawless tonal accuracy.

• Lightweight and rigid 17-inch glass fibre composite cone with optimal stiffness-to-mass ratio for maximum efficiency and acoustic linearity.
• 55 lb four-piece toroidal ferrite electromagnetic motor generates massive force with precise control, remaining authoritative yet detailed and controlled.
• Extreme-excursion catenary SBR rubber surround maintains pure, long-throw pistonic driver motion.

Unerring Control from Revolutionary Dual 8-inch Voice Coils

Unprecedented dual 8-inch voice coils ensure stable transfer of electro-magnetic current to the 17-inch driver for authoritative output and pinpoint driver control.

• 4-layer bi-filar dual voice coils conduct the massive power from the dual-mono amplifier to the motor with maximum thermal efficiency, resulting in effortless acoustic output.
• Copper clad aluminium voice coil wire combines the best properties of both elements, yielding ideal thermal capacity and magnetic field strength.

First Ever Dual Mono STA-2800D Amplifier Design with Discrete MOSFET Output

The sonic muscle behind the most powerful and highest fidelity SVS subwoofer amplifier ever developed. SB17-Ultra R|Evolution STA-2800D features technological innovations never offered before in a consumer subwoofer amplifier with breakthroughs to ensure refined behaviour and pristine response at any volume.

• Limitless headroom from dual mono-block Class-D amplifiers with MOSFET output stages.
• Each amp drives one of the dual 8-inch voice coils within the motor to assert pinpoint control and maximise power fed to the driver.
• Eight 60 Amp 200 Volt MOSFETs deliver extreme high current for reference-level output with maximum efficiency.

Performance Enhancing Switch Mode Power Supply

Regardless of the power coming out of your household circuit, the SB17-Ultra R|Evolution always maintains peak performance and remains impervious to voltage fluctuations.

• Onboard AC line conditioner filters and stabilises incoming voltage, corrects waveform distortions, and eliminates electromagnetic and radio interferences to optimise signal quality and audio performance.
• Ensures clean and consistent 160V rail voltage and optimal power delivery from a standard 15-amp home circuit.
• Power-Factor-Correction (PFC) time aligns the AC voltage to the AC current resulting in less heat, greater efficiency, reliable peak power output, and the ability to maintain rated power over a wide-range of voltages.
• FEA optimised convection cooling system has no exterior heatsinks, an extraordinary feat for such a powerful amplifier.

Extreme Subwoofer Intelligence – 295 MHz Analogue Devices DSP

Orchestrating the cutting-edge amplifier, motor, and driver ecosystem is the most sophisticated DSP ever deployed in a consumer subwoofer.

• Accurately shapes in-room frequency response with absolute precision for faithful signal reproduction.
• Monitors every function of the amplifier to stabilise AC voltage delivery to the power supply to maintain consistent peak output.
• Multi-point thermal, voltage, and current monitoring systems ensures maximum output and efficiency.
• Advanced digital audio processing and DACs (Digital-to-Analogue Converters) with 120 dB Signal-to-Noise Ratio provide greater headroom, lower noise, and pristine fidelity.

SVS Subwoofer Smartphone Control App Now with Auto EQ Room Correction

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

• Controls for volume, low pass filter, phase, polarity, six parametric equalisers, room gain compensation, tuning modes, power management settings, and more.
• Includes three convenient memory presets for fast and easy system adjustments to match your listening preferences – music, movies, night mode, and more.
• Amplifier Rear Panel OLED and control interface provide fast and direct control of the most important features and includes a convenient “Display Flip” function.

SVS Subwoofer Auto EQ Room Correction

Achieves pristine fidelity by resolving all the acoustic issues caused by your room in a few easy steps.

• Automatically tunes subwoofer output using your smartphone microphone or an external microphone and the SVS subwoofer app.
• Applies equalisation, capitalises on available room gain, and hones in-room frequency response at main listening positions for optimal in-room performance.
• Will be available soon via an over-the-air SVS Subwoofer Control App update.

Frequency Response / Acoustic Data

• 15 Hz to 320 Hz +/-3 dB.
• Roll-off slope specifically optimised to take maximum advantage of available room gain.
• 2-meter ground plane away from reflective structures (quasi-anechoic).

* Frequency response graph does not denote maximum output capability.

Subwoofer Specs

• Piano Gloss Black and Black Oak Real Wood Veneer finishes.
• Front Firing 17-inch high-excursion SVS driver.
• Protective non-resonant extra-thick ABS grille frame with fabric mesh cover to shield driver.
• Robust Medium Density Fibreboard (MDF) cabinet construction with internal bracing for resonance free performance at highest drive levels.
• Screw-in Iso-elastomer feet reduce noise artefacts and improve stability.
• Amplifier Rear Panel OLED and control interface provide fast and direct control of the most important features. Includes “Display Flip” function for viewing upside down from behind.
• Dimensions (with grille): 20.0” (507 mm) H x 19.5” (495 mm) W x 21.2” (537 mm) D.
• Dimensions (without grille): 20.0” (507 mm) H x 19.5” (495 mm) W x 20.3” (516 mm) D.
• Shipped Dimensions: 24.8” (630 mm) H X 24.9” (633 mm) W X 29.8” (757 mm) D.
• Weight (unboxed): 124.0 lbs (56.25 kg).
• Shipped Weight: 136.0 lbs (61.7 kg).

Driver Specs

• Proprietary SVS 17-inch long-throw driver with high-precision tuned overhung motor configuration.
• 63.76 lb (28.92 kg) pound Woofer with 54.17 lb (24.57 kg) pounds motor.
• 48.9 mm Xmax, 81.78 mm Xmech precision aligned excursion.
• 8” diameter Voice Coil with high current 4-layer bifilar copper-clad aluminium wire windings.
• Dual Voice coil design captures power delivery from dual-mono amplifier outputs into a single voice coil for maximum acoustic output.
• High Temperature glass-fibre composite former/bobbing.
• Four-piece high-grade oversized Y35 Ferrite magnet motor produces effortless on-demand driving-force for subtle and over-the-top low frequency sonics.
• Dual shorting rings reduce gap inductance and lower distortion.
• Dual 25-strand copper-alloy and Nomex composite high-temperature leads woven through the spider provide a pristine electrical connection from the amplifiers to the voice coils.
• Precision machined and narrow tolerance low carbon 1010 steel top-plate and oversized T-yoke with integrated pole-piece extension for optimal magnetics and thermal capacity.
• Dual Nomex extreme excursion linear suspension spiders.
• Custom injection-moulded extreme-excursion catenary SBR rubber surround ensures flawless pistonic motion for pinpoint control and accuracy without distortion at reference drive levels.
• Premium glass-fibre laminated dustcap and vented composite cone sub-structure with exceptional stiffness-to-mass ratio ensures a light, ridged, and neutral radiating surface about to move massive amounts of air with crisp precision.
• High-density 17” Powder-coated cast aluminium basket FEA optimised for maximum rigidity, tensile strength, and energy transference.
• Nickel-plated high-tension spring terminals provide secure connections.

Amplifier Specs

• Massively powerful SVS STA-2800D Class D amplifier design.
• Dual-mono discrete Class D amplifiers generate endless power from eight massive 6 0A 200 V MOSFETs, resulting in lower EMI and highest efficiency.
• High resolution 295 MHz Analogue Devices Audio DSP with double precision 56 bit filtering. Over 5x the processing power of previous subwoofers, the most advanced subwoofer processor available for flawless low frequency audio reproduction.
• Monitors every function of the amplifier ensuring precisely regulated clean voltage is delivered to and from the switch mode power supply and maximum current is pushed to the driver’s voice coils.
• DSP Continuously runs complex power management algorithms and multi-point thermal, voltage, and current monitoring systems to optimise AC voltage delivery to the power supply for continuous peak performance with maximum performance and greatest efficiency.
• Advanced digital audio processing and DACs (Digital-to-Analogue Converters) with 120 dB Signal-to-Noise Ratio provide greater headroom, lower noise, and flawless fidelity.
• All new Switch Mode Power Supply (SMPS) includes a two-stage 100-240 V full range active Power Factor Correction (PFC) to pre-regulate mains to solid 390 V DC regardless of mains voltage or quality. Ensures a consistent 160 V rail voltage for dual-mono amplifiers over a wide-range of AC voltages.
• Onboard AC line conditioner filters and stabilises incoming voltage, corrects waveform distortions, and eliminates electromagnetic and radio interferences to optimise signal quality.
• Pioneering convective cooling plate design pulls cool outside air through vents at the bottom of the amplifier plate, flowing over the amplifier components and internal heat sinks, eliminating the need for an external heatsinks.
• User auto EQ and DSP limiter settings specifically for the 17-Ultra allow the subwoofer to take control of a room and pressurise it with accurate, heart-pounding, acoustically tuned bass.
• XLR and RCA stereo input/output with ultra-wide input voltage bandwidth compliant with consumer and professional audio applications up to 4 V line level input.
• Unbalanced RCA 10 kohm input impedance (compatible with consumer and professional audio up to 4 Vrms inputs).
• Balanced XLR 14 kohm input impedance (compatible with consumer and professional audio up to 14 Vrms / +24 dBu inputs) OLED and control interface with easy control of the most important features.
• OLED and control interface with easy control of the most important features.
• USB provides power for the SVS SoundPath Wireless Audio Adapter (sold separately) which eliminates the need for a cable run to the subwoofer from the source component.
• Auto/On and Trigger options through App for maximum installation convenience (3.5 mm trigger Input 3-12 V AC/DC).
• 3.5 mm IR input for easy integration with control systems.
• Green 0.5-watt low standby power consumption.
• RoHS compliant, lead-free construction, world-wide safety certifications.

SVS App Features

• Compatible with Apple iOS, Google Android, and Amazon Fire platforms, the industry leading SVS Subwoofer Control Smartphone app allows convenient and intuitive management of all subwoofer controls.
• The Analogue Devices DSP supports a comprehensive menu of functions, including volume, fully adjustable low pass filter, phase, polarity, six PEQs, room gain compensation, tuning modes, power management settings, and more.
• Includes three convenient memory presets for fast and easy global system adjustments to match listener preferences.
• Subwoofer Auto Room Equalisation (available via over-the-air app update soon).
• Uses your mobile device’s built-in microphone to measure the acoustic performance of your subwoofer in your room.
• Automatically calculates equalisation filters to optimise the subwoofer and room combined performance at your listening position.
• Subwoofer Auto Room Equalisation (available via over-the-air app update soon).
• Easy-to-follow tutorial provides clear guidance for all functions.

Included Accessories

• Protective non-resonant extra-thick ABS grille frame with fabric mesh cover.
• Iso-elastomer feet.
• Extra heavy-duty, high current 6’ power cord.
• Quick Start Guide.