Price Match Guarantee SVS PB17-Ultra R Evolution Ported Cabinet Subwoofer The next frontier in subwoofer design. All-new 17-in high-excursion driver with dual 8-invoice coil, trail blazing dual mono STA-2800 amplifier, and unprecedented 295MHz Analog Devices DSP unite in the most formidable and sophisticated ported cabinet subwoofer ever developed. Born from three decades of SVS design expertise, the pinnacle of subwoofer performance is here with the PB17-Ultra R Evolution. Reimagined dual mono-