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Information
We are a small, family run business located in Yorkshire. Should you need any pre/post sales support, please contact us for fast, friendly and efficient assistance.
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Shipping Information
We ship with DPD on a next day service for items ordered up to 3pm and that are in stock. If there is a delay with your order, we will contact you within 1 hour.
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Customer Support
Email support via info@yorkshireav.co.uk is preferred or you can contact us on 01757 826111.
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FAQ’s
Do you have a store?
Yes! Come and visit us off the M62 J34 in the village of Whitley to experience all of our products.







Contact us to discuss SVS products.
SVS SB-17 Ultra Subwoofer
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SVS SB-17 Ultra Subwoofer
About the SVS SB-17 Ultra Subwoofer
Product Description
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.
High-Excursion 17-Utra R | Evolution Driver
17-inch glass fibre composite cone with 55 lb torodial ferrite magnet motor assembly render massive low frequency output down to 15Hz 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 amplifier 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 colouration.
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 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
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 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
• Applies equalisation, capitalizes 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
Specification
Frequency Response / Acoustic Data | • 15Hz to 320Hz +/-3dB • Roll-off slope specifically optimised to take maximum advantage of available room gain • 2-metre 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-fiber 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-fiber 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 Analogue 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-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 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 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 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 Equalization (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 Information
Thank you for considering Yorkshire AV for your next investment in your AV or HiFi setup.
We are an approved retailer for all brands sold on our website, which means full manufacturers warranty and support as well as detailed product knowledge within our small business.
We use an inventory tracking system which states if item(s) are in stock and if not, what are the likely lead times.
Who do you use for delivery?
Our primary delivery agent is DPD. Where orders are shipped directly from Yorkshire AV, we always use DPD who offer a fabulous service at competitive rates.
If we drop ship (i.e. direct from the supplier) then the delivery agent is out of our control. It is generally DPD or UPS however - we rarely see other carriers used.
Selecting "Next Day" delivery does not mean you'll receive your item the next day in some cases. It's the next day from when the item(s) are in stock with us. If there is an urgent need then please contact a member of staff via the Live Chat or telephone (01757 826111) to check on live stock levels.
Certain product(s) are delayed in manufacturing due to semi-conductor shortages across the Globe. We'll keep you informed as to your order progress and a likely ETA once we get updates from the manufacturers.
Returns
Standard Returns
Our returns policy lasts for 28 days for all items in our store except those defined in section (1) below.
To be eligible for a refund, your item must be unused/unopened and in the same condition that you received it. It must also be in the original packaging.
If you return the item to us within 14 days of purchasing, you will be offered a full refund or exchange. If your return comes to us after 14 days of purchasing and is opened, we will refund the full amount less 20%. Unused items returned up to 28 days after purchasing will be fully refunded.
It's the responsibility of the customer to return the items at your cost. Yorkshire AV are able to arrange collection - please contact us for a quote.
You must ensure goods are shipped in their original packaging if they are damaged/not working. Manufacturers will not accept returns and Yorkshire AV can not be held responsible for any damage in transit.
Several types of goods are exempt from being returned.
(1) Examples of non-returnable items:
- Gift cards
- HiFi Racks
- Second hand units / clearance products
- Headphones (due to listener hygiene)
- Custom cables
- Special order items (items that we order in for you/were not in stock at the time of order)
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer.
Please complete your return via your customer account by clicking here.
There are certain situations where only partial refunds are granted (if applicable). Those are where:
- Any item not in its original condition, is damaged or missing parts for reasons not due to our error
- Any item that is returned more than 28 days after delivery
There are certain situations where only partial refunds are granted (if applicable). Those are where:
- Any item not in its original condition, is damaged or missing parts for reasons not due to our error
- Where the item wasn't marked with an extended returns policy at the end of the checkout process
Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
Items that have been opened will be listed on our "Clearance" section. We charge a 20% fee from the total item value which will be deducted from any refund amount applicable.
If your returns are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 2-3 days. Costs of shipping will be deducted from any refund amount.
Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again.
Then contact your credit card company, it may take some time before your refund is officially posted.
Next contact your bank. There is often some processing time before a refund is posted.
If you’ve done all of this and you still have not received your refund yet, please contact us at info@yorkshireav.co.uk.
Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items/clearance products cannot be refunded.
Exchanges (if applicable)
We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at info@yorkshireav.co.uk and send your item to: Yorkshire AV LTD, Unit 6 Wood Farm, Doncaster Road, GOOLE, DN14 0JF, United Kingdom.
Shipping
To return your product, you should mail your product to: Yorkshire AV LTD, Unit 6 Wood Farm, Doncaster Road, GOOLE, DN14 0JF, United Kingdom
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.
Please complete your return via your customer account by clicking here.
Warranty
By default, our brands follow their standard manufacturers warranty terms and length.
For extended Warranty (should this be offered with your product), please ensure you complete the Extended Warranty registration form that was emailed to you.
Warranty claims within the warranty period are underpinned by the manufacturer. With any extended warranty claims - Yorkshire AV act as your agent to the authorised repair centre.
Shipping charges are excluded from any warranty claim. Original packaging and receipts must be provided else the claim will be rejected.
For any questions or issues - please contact us directly.
Finance
We’ve got you covered, as we have finance options available for people with varying circumstances. Yorkshire AV believes that you shouldn’t have to pinch your pockets to be able to purchase our products. You can pay in affordable monthly instalments to better suit your needs and budget.
To help you purchase from Yorkshire AV, we have partnered with Kandoo, a regulated credit broker to offer all our customers a range of highly flexible finance options. Kandoo is a comparison service that searches to find you the best Personal Loan option that’s right for you.
FAQs
Please read our FAQs page to find out more.
Do you have a real store?
Yes! We have a store set in a quaint location with plenty of parking even for HGV's! We have a dedicated demonstration room for Headphones/portable audio, 2 channel HiFi and one of the most advanced home cinema rooms in the country.
Can I home demonstrate products?
In most cases yes. Simply contact us with your requirements and if it's on the shop floor - we can arrange a home demonstration.
Do you ship from store?
In most cases yes. We have a store front with products such as cables and smaller products physically to hand. We also have a dedicated warehouse a few minutes away with over 1200sq m of products stored. Some products are shipped direct from manufacturers - as it's not practical / cost effective to store every variant of every product. We are very efficient at stock management however.
Can I return a product?
Yes! So long as it's new/unused and in the same condition it was delivered to you, we will gladly refund you up to 14 days from purchase. Please raise a request via your Account area to start the return process.
Do you offer installation?
Absolutely - we have a dedicated, in-house team of installers who travel the UK installing lovely hifi and home cinema solutions. Contact us to discuss pricing.