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SVS SB17 Ultra Subwoofer

£3,250.00 including VAT

The SVS SB17 Ultra Subwoofer delivers reference level bass with a massive 17-inch driver. Powered by an STA-2800D dual mono amplifier, two 8-inch voice coils ensure the SB17 Ultra provides impactful and authoritative low frequencies. Experience the ultimate bass performance in all your movies and music.

Earn up to 3,250 points.
Variation SKU Quantity in Stock Availability & Lead Time
Gloss Black 54857 0 Warehouse stock usually available in 2 to 3 working days.
Black Oak 54858 0 Warehouse stock usually available in 2 to 3 working days.

Product Description

The SVS​‍​‌‍​‍‌​‍​‌‍​‍‌ SB17 Ultra Subwoofer is a top-notch model that comes loaded with many new features. It is a successor of the SB16 Ultra. This newly sealed edition comes with a 17” woofer that features dual 8” voice coils.

SVS SB17 Ultra Subwoofer

Besides,​‍​‌‍​‍‌​‍​‌‍​‍‌ the power is handled through the use of a very big motor assembly. The power supply utilized is a switch mode unit. It produces less heat and therefore results in a lower load on the house mains supply. Moreover, the high-tech DSP engine is managed through a dedicated application.

17” ultra R Evolution driver

The SVS SB17 Ultra Subwoofer employs a 17” ultra R Evolution driver. The diaphragm of this driver consists of a glass fibre composite and it is excited by a hefty 55 lb toroidal ferrite magnet motor assembly. The pair allows delivering an extremely high output with a frequency response extending down to 15Hz.

Dual​‍​‌‍​‍‌​‍​‌‍​‍‌ Mono Amplifier

To deliver more power the SVS SB17 Ultra Subwoofer employs two mono Class D amplifiers with MOSFET output stages. Each stage is connected to a different voice coil. That way you get double the current and less power is drawn from the home’s mains circuit.

Class D is a switching system that has an output which mainly consists of very high frequency pulses. The pulses are PWM by the audio. For example, the closer the pulses are the higher is the ​‍​‌‍​‍‌​‍​‌‍​‍‌output

Switch Mode Power Supply

The​‍​‌‍​‍‌​‍​‌‍​‍‌ SVS SB17 Ultra Subwoofer comes with a switch-mode power supply. Switch-mode power supplies are quite a bit more efficient than linear ones and also offer good regulation. Switching supplies lead to an improvement in the quality of the signal and a reduction in the amount of heat produced.

Furthermore, switch-mode power supplies require a smaller transformer than linear ones. The transformer is switched at a high frequency and the regulation is controlled by an IC. In addition, there are usually several output ​‍​‌‍​‍‌​‍​‌‍​‍‌windings.

App Control

With the SVS control app, you have a precision control of your subwoofer at the tip of your fingers. It is available for Apple iOS, Android and Amazon Fire platforms. For the first time ever, Auto Room Equalisation* leverages the smartphone’s mic to automatically take the measurements.

Which then adjusts the subwoofer’s settings to match your room’s acoustics. Besides that, the app gives you an opportunity to access all the DSP features such as volume, six preset EQs, low pass filter, phase, polarity, room gain compensation, power management settings and more. ​‍​‌‍​‍‌​‍​‌‍​‍‌

Features and Benefits

  • Deep,​‍​‌‍​‍‌​‍​‌‍​‍‌​‍​‌‍​‍‌​‍​‌‍​‍‌ Powerful Bass: The bass of the subwoofer will vibrate your entire body and the rest of the details will be crystal clear through your ears.
  • Modern Look: It easily blends with any type of décor so it can be the perfect home decor addition.
  • Quick Setup: Just plug it in the wall outlet and that’s it. You don’t have to be a very tech-savvy person to be able to connect it to your sound system.
  • Soundfield Control: Turn the sound into a masterpiece; you have the freedom to create the acoustics of your choice.

Summary of the SVS SB17 Ultra Subwoofer

SVS SB17 Ultra cabinet has been constructed with Double-thick MDF. It has a very strong internal bracing which makes it immune to any resonances or rattles.

A Smart Investment

Because​‍​‌‍​‍‌​‍​‌‍​‍‌ of its amazing features like toughness and excellent performance, it is a very good idea to a person that really serious about upgrading their audio devices and doing it in a right way to choose them. The company has a great commitment to delivering top quality sound and therefore, each of your listening session will be greatly ​‍​‌‍​‍‌​‍​‌‍​‍‌engrossing.

Additional Information
Frequency Response 15Hz to 320Hz +/-3dB
Driver Front Firing 17-inch high-excursion driver
Grille Protective non-resonant extra-thick ABS grille frame with fabric mesh
Dimensions (with grille) 20.0” (507mm) H x 19.5” (495mm) W x 21.2” (537mm) D
Weight 124.0lbs (56.25kg)
Voice Coil 8” diameter Voice Coil with high current 4-layer bifilar copper-clad aluminum wire windings
Amplifier Massively powerful STA-2800 Class D amplifier design
DSP High resolution 295Mhz Analog Devices Audio DSP with double precision 56bit filtering
Amplifier Design Dual-mono discrete Class D amplifiers create effortless and endless power from eight massive 60A 200V MOSFETs
Inputs Unbalanced RCA 10kohm input impedance, Balanced XLR 14kohm input impedance
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
Reviews & Awards
EISA 2025-2026 EISA 2025-2026 Best Subwoofer

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Shipping and Returns
Your Delivery

Orders received before 2:30 pm will be dispatched the same day and can be delivered within the next working day (except bank holidays). For your convenience, you can choose multiple shipping options on the checkout page. We will also email with your tracking and dispatch information.

30-Day Returns Policy

HiFix is committed to selling quality products, which we hope you will love; we do understand, however, that there may be a time when you need to exchange or return something you have bought. We really do hope you are pleased with your purchase, but should you wish to return anything you have bought from us, we will be happy to refund or exchange a product within 30 days.

Manufacturer Warranty Information

SVS products are designed and manufactured to the highest quality standards. However, if something does go wrong with the product we are here to help. From your date of purchase your product is warranted against faulty materials or workmanship for a period of 60 months.

This guarantee applies to all SVS Products including Sub Woofers. Providing you with peace of mind and the assurance of premium Quality.

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