Power RMS / max. 200 / 400 Watts Impedance 4 x 2 Ω Max. linear excursion +/- 5.0 mm Efficiency 1 W / 1 m 90 dB Dimensions (H x W x D) 280 x 318 x 310 mm / 11.0 x 12.5 x 12.2″.