PB17-Ultra QUICK SPECS:
• Driver: 17”
• Amplifier: SVS STA-2800 Class D
• Frequency Response:
o 14Hz to 220Hz +/-3dB (standard mode – all ports open)
o 12Hz to 220Hz +/-3dB (extended mode – 2 ports open)
o 14Hz to 320Hz +/-3dB (sealed mode – all ports sealed)
• Dimensions:
o Dimensions: 25.0” (635mm) H x 21.7” (550mm) W x 29.3” (744mm) D
Frequency Response / Acoustic Data:
• 14Hz to 220Hz +/-3dB (standard mode – all ports open)
• 12Hz to 220Hz +/-3dB (extended mode – 2 ports open)
• 14Hz to 320Hz +/-3dB (sealed mode – all ports sealed)
• 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 options
• Front Firing 17-inch high-excursion driver
• Triple High-flow 4-inch ports
• Amplifier Rear Panel OLED and control interface provide fast and direct control of the most
important features and includes a convenient “Display Flip” function.
• Protective non-resonant extra-thick ABS grille frame with fabric mesh cover shields driver to
prevent damage while ensuring longevity.
• 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
• Dimensions (with grille): 25.0” (635mm) H x 21.7” (550mm) W x 29.3” (744mm) D
• Dimensions (without grille): 25.0” (635mm) H x 21.7” (550mm) W x 28.5” (723mm) D
• Shipped Dimensions: 30.2” (767mm) H X 27.5” (698mm) W X 38.4” (976mm) D
• Weight (unboxed): 164.7lbs (74.7kg)
• Shipped Weight: 186.1lbs (84.4kg)
Driver Specs:
• All-new proprietary 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 bass thrills.
• 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 Top-plate and oversized T-yoke with integrated polepiece extension made from low carbon 1010 steel for optimal magnetics and thermal capacity
• Dual Nomex extreme excursion linear suspension spiders.
• Proprietary injection-molded extreme-excursion catenary SBR rubber surround ensures
flawless pistonic motion for pinpoint control and accuracy without distortion at the highest
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 STA-2800 Class D amplifier design
• High resolution 295Mhz Analog Devices Audio DSP with double precision 56bit filtering, with
over 5x the processing power of our previous subwoofers, the most advanced subwoofer
processor available for perfect audio reproduction.
• DSP 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.
• Dual-mono discrete Class D amplifiers create effortless and endless power from eight
massive 60A 200V MOSFETs, resulting in lower EMI and highest efficiency while providing
effortless power each voice coil, producing SPLs and low frequency output with pristine
clarity well beyond reference listening levels.
• All new Switch Mode Power Supply (SMPS) includes a two-stage 100v-240v full range active
Power Factor Correction (PFC) which pre-regulates mains to solid 390V DC regardless of
mains voltage or quality, ensuring a consistent 160V rail voltage for the dual-mono
amplifiers.