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, the pinnacle of subwoofer performance is here with the SB17-Ultra R|Evolution. Reimagined dual mono-block STA-2800 amplifier technology, first ever 17-in driver with dual 8-in voice coils, and the most powerful DSP ever used in a consumer subwoofer married to advanced power management and auto EQ room calibration. 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.

• Glossy 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 Fiberboard (MDF) cabinet construction with internal bracing for resonance free performance at highest drive levels
• Screw-in Iso-elastomer feet reduce noise artifacts 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 (H x W x D) -  20.0” (507 mm) x 19.5” (495 mm) x 21.2” (537 mm) 
• Dimensions without grille (H x W x D) - 20.0” (507 mm) x 19.5” (495 mm) x 20.3” (516 mm)   
•   Shipped Dimensions (H x W x D) - 24.8” (630 mm) x 24.9” (633 mm) x 29.8” (757 mm)
• Weight unboxed -  124 lbs (56.25 kg)
• Shipped Weight - 136 lbs (61.7 kg)

• Proprietary SVS 17-inch long-throw driver with high-precision tuned overhung motor configuration
• 63.76 lbs (28.92 kg) pound Woofer with 54.17 lbs (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 fibreglass 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 fibreglass 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

• Sledge STA-2800D with 2800 watts RMS continuous power (6000+ watts peak dynamic power)
• Dual-mono discrete Class D amplifiers generate endless power from eight massive 60A 200V MOSFETs, resulting in lower EMI and highest efficiency
• High resolution 295Mhz Analog Devices Audio DSP with double precision 56bit 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 optimize 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-Analog 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 100v-240v full range active Power Factor Correction (PFC) to pre-regulate mains to solid 390V DC regardless of mains voltage or quality. Ensures a consistent 160V rail voltage for dual-mono amplifiers over a wide-range of AC voltages
• Onboard AC line conditioner filters and stabilizes incoming voltage, corrects waveform distortions, and eliminates electromagnetic and radio interferences to optimize 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 pressurize 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 4V line level input
• Unbalanced RCA 10kohm input impedance (compatible with consumer and professional audio up to 4Vrms inputs)
• Balanced XLR 14kohm input impedance (compatible with consumer and professional audio up to 14Vrms / +24dBu inputs) 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 (3.5mm trigger Input 3-12V AC/DC)
• 3.5mm 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.