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