DD Audio VO-W12a-D4

Speaker Size12″ Watts RMS500-1500 Watts Peak3000 Voice Coil Diameter - in3 Voice Coil ImpedanceDual 4 Ohm Piston Diameter - in10.25 Fs - Hz39 Qms4.381 Qes0.439 Qts0.399 Vas - liters30.301 dBSPL88 Xmech - mm70 Xmax - mm8 Frame OD - in12.625 Frame OD w/Gasket - in12.75 Mounting Diameter - in11.125 (28,25cm) Mounting Depth - in6.75 (17.14cm) Motor Depth - in3 (7.62cm) Motor Diameter - in7.87 (19,98cm) Magnet Weight - oz160 (4,5kg) Woofer Displacement - ft30.12 Sealed Enclosure - cu ft1.5-2.5 (42-70l) Ported Enclosure - cu ft1.75-2.75 (49-78l).