Power handling RMS P 600 Watts Recommended amplifier power RMS 150 – 600 Watts Impedance z 2 x 2 Ω / 1 x 4 Ω / 1 x 1 Ω Max. linear excursion Xmax +/- 8.0 mm Port tuning frequency Fb 41 Hz Sensitivity SPL 92 dB @ 2.83V / 1m 89 dB @ 1W / 1m Dimensions (D x H) 580 x 160 mm / 22.8 x 6.3” Integrated subwoofer chassis HELIX IK W8-SVC2 Recommended DSP settings ″Self-define″ highpass 35 Hz / Q = 1.0 EQ filter: 60 Hz / Q = 1.0 / -1 dB