SVS Subwoofer SB17-Ultra R|Evolution Sealed Subwoofer

Now featured in ListenUp's Great Gear of the Year in Hi-Fi and Home Theater for 2024! Watch it here.

Or would you prefer the deeper bass of the ported enclosure PB17-Ultra?

• Bass Extension down to 15 Hz

17” Driver (woofer) 

• Dual 8” Copper Clad Aluminum (CCA) Voice Coils 
• High-Excursion (long throw) 
• Extreme Excursion Catenary SBR Rubber Surround 
• Glass Fiber Cone is both lightweight and rigid with optimal stiffness-to-mass ratio
• 55lb Toroidal Ferrite Electromagnetic Motor 

Two STA-2800D Class-D Monoral Amplifiers (one for each voice coil)

• 2800 watts RMS continuous power (6000+ watts peak dynamic power)
• Dual Mono Design lowers the continuous current demand on residential AC 
• Eight 60 Amp 200 Volt MOSFETs

Switch Mode Power Supply 

• Impervious to voltage fluctuations with a clean and consistent 160V rail voltage and optimal power delivery from a standard 15-amp 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
• Internal AC line conditioner filters and stabilizes incoming voltage, corrects waveform distortions, and eliminates electromagnetic and radio interferences.
• FEA optimized convection cooling system has no exterior heatsinks

295 MHz Analog Devices DSP 

• Monitors every function of the amplifier to stabilize AC voltage delivery to the power supply for continuous peak performance
• Multi-point thermal, voltage, and current monitoring systems 
• Advanced digital audio processing and DACs (Digital-to-Analog Converters) with 120dB Signal-to-Noise Ratio 

SVS Subwoofer Control Smartphone App

• Controls DSP functions including Volume, 6-Band Parametric Equalizer, Low Pass Filter, Phase, Polarity, Room Gain, Port Tuning, System Settings and Custom Presets.

SVS Subwoofer Auto Room Correction

• Automatically tunes subwoofer output for optimized in-room performance using the builtin microphone on your smartphone. 

Acoustically Tuned Cabinet Design

• Double thick MDF and rigid internal bracing 

SVS SB17 Ultra Specifications:

Driver:17”

63.76 lb pound Woofer with 55 lb motor

48.9mm Xmax, 81.78mm Xmech precision aligned excursion

Dual 8” diameter Voice Coils with high current 4-layer bifilar copper-clad aluminum wire windings

Amplifier: SVS STA-2800 Class D

Frequency Response: 15Hz to320Hz +/-3dB

Dimensions With Grill: 20”H x 19.5”W x 21.2”D

Dimensions Without Grill: 20”H x 19.5”W x 20.3”D

Shipped Dimensions: 24.8”H x 24.9”W x 29.8”D

Weight (unboxed): 124 lbs

Shipped Weight: 136 lbs

SVS SB17 Ultra Owner's Manual