SB17-Ultra QUICK SPECS:
• Driver: 17”
• Amplifier: SVS STA-2800 Class D
• Frequency Response:
o 15Hz to 320Hz +/-3dB
• Dimensions:
o Dimensions: 20.0” (507mm) H x 19.5” (495mm) W x 21.2” (537mm) D
Frequency Response / Acoustic Data:
• 15Hz to 320Hz +/-3dB
• Expect 2-3Hz deeper extension in small to mid-size rooms.
• Roll-off slope specifically optimized 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 Fiberboard (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
o 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 55lb (25kg) motor
• 48.9mm Xmax, 81.78mm Xmech precision aligned excursion
• 8” diameter Voice Coil with high current 4-layer bifilar copper-clad aluminum 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 Tyoke 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 aluminum basket FEA optimized for maximum rigidity,
tensile strength, and energy transference
• Nickel-plated high-tension spring terminals provide secure connections
Amplifier Specs:
• Massively powerful SVS STA-2800 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 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-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 stabilizes incoming voltage, corrects waveform
distortions, and eliminates electromagnetic and radio interferences to optimize 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 pressurize it with accurate, heart-pounding, acoustically tuned bass
• Unbalanced RCA 10kohm input impedance (compatible with consumer and professional audio
up to 4Vrms inputs)