SVS SB17-ULTRA R|Evolution Subwoofer
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.
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-inch 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.
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 fiber composite cone with optimal stiffness-to-mass ratio for maximum efficiency and acoustic linearity
- 55lb 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
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 aluminum voice coil wire combines the best properties of both elements, yielding ideal thermal capacity and magnetic field strength
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 behavior 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 maximize power fed to the driver
- Eight 60 Amp 200 Volt MOSFETs deliver extreme high current for reference-level output with maximum efficiency
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 stabilizes incoming voltage, corrects waveform distortions, and eliminates electromagnetic and radio interferences to optimize 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 optimized convection cooling system has no exterior heatsinks, an extraordinary feat for such a powerful amplifier
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 stabilize 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-Analog Converters) with 120 dB Signal-to-Noise Ratio provide greater headroom, lower noise, and pristine fidelity
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 equalizers, 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
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Applies equalization, capitalizes on available room gain, and hones in-room frequency response at main listening positions for optimal in-room performance
Specifications
| Frequency Response / Acoustic Data: | 15Hz to 320Hz ±3dB |
| Frequency Response Notes: | Roll-off slope specifically optimised to take maximum advantage of available room gain. Measured at 2-metre ground plane away from reflective structures (quasi-anechoic). Frequency response graph does not denote maximum output capability. |
| Cabinet Finishes: | Piano Gloss Black and Black Oak Real Wood Veneer finishes. |
| Driver Configuration: | Front-firing 17-inch high-excursion SVS driver. |
| Grille Design: | Protective non-resonant extra-thick ABS grille frame with fabric mesh cover to shield driver. |
| Cabinet Construction: | Robust Medium Density Fibreboard (MDF) cabinet construction with internal bracing for resonance-free performance at the highest drive levels. |
| Isolation Feet: | Screw-in iso-elastomer feet reduce noise artefacts and improve stability. |
| OLED Interface: | Amplifier rear panel OLED and control interface provide fast and direct control of key features, including a “Display Flip” function for upside-down viewing from behind. |
| Dimensions With Grille: | 20.0in (507mm) H × 19.5in (495mm) W × 21.2in (537mm) D. |
| Dimensions Without Grille: | 20.0in (507mm) H × 19.5in (495mm) W × 20.3in (516mm) D. |
| Shipped Dimensions: | 24.8in (630mm) H × 24.9in (633mm) W × 29.8in (757mm) D. |
| Weight Unboxed: | 124.0lbs (56.25kg). |
| Shipped Weight: | 136.0lbs (61.7kg). |
| Driver Design: | Proprietary SVS 17-inch long-throw driver with high-precision tuned overhung motor configuration. |
| Woofer Weight: | 63.76lb (28.92kg) woofer with 54.17lb (24.57kg) motor assembly. |
| Excursion Performance: | 48.9mm Xmax and 81.78mm Xmech precision-aligned excursion. |
| Voice Coil Design: | 8-inch diameter voice coil with high-current 4-layer bifilar copper-clad aluminium wire windings. |
| Dual Voice Coil System: | Dual voice coil design captures power delivery from dual-mono amplifier outputs into a single voice coil for maximum acoustic output. |
| Former Material: | High-temperature glass-fibre composite former/bobbing. |
| Magnet Motor System: | Four-piece high-grade oversized Y35 ferrite magnet motor delivers effortless on-demand driving force for subtle and extreme low-frequency performance. |
| Shorting Rings: | Dual shorting rings reduce gap inductance and lower distortion. |
| Lead Wires: | Dual 25-strand copper-alloy and Nomex composite high-temperature leads woven through the spider provide pristine electrical connection from amplifiers to voice coils. |
| Motor Structure: | Precision-machined low carbon 1010 steel top-plate and oversized T-yoke with integrated pole-piece extension for optimal magnetics and thermal capacity. |
| Suspension System: | Dual Nomex extreme-excursion linear suspension spiders. |
| Surround Design: | Custom injection-moulded extreme-excursion catenary SBR rubber surround ensures flawless pistonic motion and pinpoint accuracy without distortion at reference levels. |
| Cone Construction: | Premium glass-fibre laminated dustcap and vented composite cone sub-structure with exceptional stiffness-to-mass ratio for a lightweight, rigid, and neutral radiating surface. |
| Basket Design: | High-density 17-inch powder-coated cast aluminium basket FEA optimised for maximum rigidity, tensile strength, and energy transference. |
| Speaker Terminals: | Nickel-plated high-tension spring terminals provide secure connections. |
| Amplifier Power: | Sledge STA-2800D amplifier with 2800 watts RMS continuous power and 6000+ watts peak dynamic power. |
| Amplifier Topology: | Dual-mono discrete Class-D amplifiers generate immense power from eight 60A 200V MOSFETs for lower EMI and maximum efficiency. |
| DSP Processing: | High-resolution 295MHz Analog Devices Audio DSP with double-precision 56-bit filtering and over five times the processing power of previous SVS subwoofers. |
| Amplifier Monitoring: | Monitors every amplifier function to ensure precisely regulated clean voltage delivery and maximum current to the driver voice coils. |
| Power Management: | DSP continuously runs complex power management algorithms with multi-point thermal, voltage, and current monitoring systems for maximum efficiency and performance. |
| Digital Audio Processing: | Advanced digital audio processing and DACs with 120dB signal-to-noise ratio provide greater headroom, lower noise, and flawless fidelity. |
| Switch Mode Power Supply: | Two-stage 100V–240V full-range active Power Factor Correction (PFC) pre-regulates mains to solid 390V DC regardless of mains voltage quality. |
| AC Line Conditioning: | Onboard AC line conditioner filters and stabilises incoming voltage, corrects waveform distortions, and eliminates electromagnetic and radio interference. |
| Cooling System: | Convective cooling plate design draws cool air through bottom vents and over internal heatsinks, eliminating the need for external heatsinks. |
| Auto EQ And DSP Limiting: | User auto EQ and DSP limiter settings tailored specifically for the 17-Ultra deliver accurate, room-pressurising bass. |
| Audio Connections: | 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. |
| RCA Input Impedance: | Unbalanced RCA 10kohm input impedance compatible with consumer and professional audio up to 4Vrms inputs. |
| XLR Input Impedance: | Balanced XLR 14kohm input impedance compatible with consumer and professional audio up to 14Vrms / +24dBu inputs. |
| USB Connectivity: | USB output provides power for the SVS SoundPath Wireless Audio Adapter (sold separately). |
| Power Options: | Auto/On and trigger options available through the app for installation convenience (3.5mm trigger input 3–12V AC/DC). |
| IR Input: | 3.5mm IR input for integration with control systems. |
| Standby Power Consumption: | Green 0.5-watt low standby power consumption. |
| Compliance And Certification: | RoHS-compliant, lead-free construction with worldwide safety certifications. |
| App Compatibility: | Compatible with Apple iOS, Google Android, and Amazon Fire platforms. |
| App Features: | Provides intuitive control of volume, fully adjustable low-pass filter, phase, polarity, six PEQs, room gain compensation, tuning modes, and power management settings. |
| Memory Presets: | Includes three convenient memory presets for fast and easy global system adjustments. |
| Auto Room Equalisation: | Available via future over-the-air app update. |
| Room EQ Measurement: | Uses your mobile device’s built-in microphone to measure acoustic performance within your room. |
| Automatic EQ Calculation: | Automatically calculates equalisation filters to optimise subwoofer and room performance at the listening position. |
| App Guidance: | Easy-to-follow tutorial provides clear guidance for all functions. |
| Accessories: | Protective non-resonant extra-thick ABS grille frame with fabric mesh cover, Iso-elastomer feet included, Extra heavy-duty high-current 6ft power cord included, Quick Start Guide included. |
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