DD audio SL715-D4

Speaker Size (In): 15 Watts RMS: 1000 Impedance: D4 VCD (In): 3 Piston Diameter (In): 15 Fs (Hz): 27.7 Qms: 6 Qes: 0.73 Qts: 0.66 Vas (Liters): 54.9 Xmech (MM): 40 Xmax (MM): 19 Frame OD (In): 15.375 Frame OD (MM): 391 Frame OD w/Gasket (In): 15.5 Frame OD w/Gasket (MM): 394 Mounting Diameter (In): 13.875 Mounting Diameter (MM): 352 Mounting Depth (In): 6.75 Mounting Depth (MM): 172 Motor Diameter (In): 6.7 Motor Diameter (MM): 170 Motor Depth (In): 2.5 Motor Depth (MM): 63.5 Woofer Displacement (CuFt): 0.09 Woofer Displacement (Liters): 2.55 Sealed Enclosure (CuFt): 1.25 - 2.5 Sealed Enclosure (Liters): 25.4 - 70.8 Ported Enclosure (CuFt): 1.75 - 2.75 Ported Enclosure (Liters): 50 - 77.9