DD Audio 9921a D1

Speaker Size (In):21 Watts RMS:1500 - 2500 Watts Peak:10000 Impedance:D1 VCD (In):4 Piston Diameter (In):18.25 Fs (Hz):26.24 Qms:5.265 Qes:0.517 Qts:0.471 Vas (Liters):161.9 Xmech (MM):92 Xmax (MM):22 Frame OD (In):21.3125 Frame OD w/Gasket (In):21.3125 Mounting Diameter (In):19.25 Mounting Depth (In):11.3125 Motor Diameter (In):10.3125 Motor Depth (In):4.5625 Woofer Displacement (CuFt):0.55 Ported Enclosure (CuFt):6.0 - 8.0 Shipping Weight (Lbs):92