Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
SVS SB17-Ultra R|Evolution Sealed Box SubwooferExperience the pinnacle of low frequency performance with the SB17 Ultra R Evolution, the new gold standard in subwoofer design. Key Features Driver: 17" Freq. Response: 15Hz to 320Hz + 3dB Dimension: 50. 8 cm (H) 49. 5 cm (W) 53. 9 cm (D) This subwoofer redefines power and precision with a groundbreaking 17 inch driver, dual 8 inch voice coils, and a revolutionary STA 2800 dual mono block amplifier. Engineered with the most advanced DSP ever found in
Experience the pinnacle of low-frequency performance with the SB17-Ultra R|Evolution, the new gold standard in subwoofer design.
Key Features
- Driver: 17"
- Freq. Response: 15Hz to 320Hz +/-3dB
- Dimension: 50.8 cm (H) 49.5 cm (W) 53.9 cm (D)
This subwoofer redefines power and precision with a groundbreaking 17-inch driver, dual 8-inch voice coils, and a revolutionary STA-2800 dual mono-block amplifier. Engineered with the most advanced DSP ever found in a consumer subwoofer, it adapts seamlessly to your room, delivering crushing impact and nuanced musicality with effortless control.
Feel the deep, chest-rumbling bass and enjoy extraordinary accuracy across all frequencies. Whether you're immersed in cinematic soundtracks or enjoying the subtlety of a musical performance, the SB17-Ultra R|Evolution ensures that every note is rendered with clarity and precision. Boasting extension down to a staggering 15 Hz, this subwoofer delivers the kind of visceral impact that you can both hear and feel.
- Revolutionary 17-Inch Driver: Featuring a glass-fibre composite cone with a massive 25kg magnet assembly, the SB17-Ultra delivers thunderous bass with absolute precision.
- Dual 8-Inch Voice Coils: Ensures peak efficiency and accurate energy transfer for impeccable driver control, giving you low frequencies with unrivalled stability.
- Dual Mono-Block Amplifiers: These Class-D amplifiers deliver double the power, providing effortless output while conserving energy for an optimised home experience.
- Advanced DSP and Power Supply: A 295 MHz processor ensures flawless performance, while the switch mode power supply optimises signal quality by stabilising voltage.
- Control at Your Fingertips: The SVS app gives you complete control over DSP settings, including EQ, filters, phase adjustments, and auto-room calibration—making it easier than ever to fine-tune your sound.
- Sealed Cabinet Precision: With its acoustically tuned, resonance-free design, the cabinet ensures pure, uncoloured bass for audiophile-grade performance.
Step into a new realm of bass excellence with the SB17-Ultra R|Evolution, where power meets finesse, and sound comes to life like never before.
Frequency Response / Acoustic Data:
* Frequency response graph does not denote maximum output capability
- 15Hz to 320Hz +/-3dB
- Roll-off slope specifically optimised to take maximum advantage of available room gain.
- 2-meter ground plane away from reflective structures (quasi-anechoic).
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 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): 20.0” (507mm) H x 19.5” (495mm) W x 21.2” (537mm) D
- Dimensions (without grille): 20.0” (507mm) H x 19.5” (495mm) W x 20.3” (516mm) D
- Shipped Dimensions: 24.8” (630mm) H X 24.9” (633mm) W X 29.8” (757mm) D
- Weight (unboxed): 124.0lbs (56.25kg)
- Shipped Weight: 136.0lbs (61.7kg)
Driver Specs:
- Proprietary SVS 17-inch long-throw driver with high-precision tuned overhung motor configuration
- 63.76lb (28.92kg) pound Woofer with 54.17lb (24.57kg) pounds motor
- 48.9mm Xmax, 81.78mm 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-molded 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 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 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-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 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 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
- 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.
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 Analog 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
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 2019 reviews
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Product Reviews
★★★★★ 4
They are very quality
Size: 11 Little Kid, Color: Gold, Size: 11 Little Kid, Color: Gold
My daughter loved the sandals. They look good on her feet. She has a narrow foot so they fit her just fine. I gave four stars because she wears a size 10 shoe now and I ordered an 11 thinking that she would be able to grow into them. As you can see from the pictures, they fit her perfectly. Everyone has one foot that is bigger than the other, so her bigger foot is hanging off the back. I purchased these for her summer sandals now I’ll have to buy her some more because these will not last through the summer.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2025
★★★★★ 5
Good quality
Size: 9 Toddler, Color: Gold
Love this even those my daughter passed away it was one of her favorite
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
★★★★★ 5
The quality is good
Size: 9 Toddler, Color: Gold
Was so disappointed brought a size 9 get a size 8
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
★★★★★ 5
The best sandals for all summer long
Size: 5 Toddler, Color: Gold
A really good quality sandals for my daughter who plays and move around a lot. She wore this for more than 2 years basically it was my go to sandals for her: she never complained and that she love them and are comfortable. It goes with any style you can think of. Very stylish. The size was perfect.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 15, 2025
★★★★★ 5
Cute, sturdy, versatile
Size: 6 Big Kid, Color: Off-white Faux Leather
I bought several pairs of these to get the right sizes lol. I originally purchased for my 9 year old xoxo for a vacation but I got a too big, my 13 year old grabbed them tried them on and LOVED them. So, I ordered three more pair, found the right size for my 9 year old and sent the other two back. These are cute, versatile, sturdy, and GREAT price. I live that they buckle, are closed toes, but airy. Can dress up or down.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 20, 2026
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