EMINENCE OMEGAPRO15-2KW-8 Professional Series Bass Speaker 15-in Subwoofer 1000 Wrms 2000 Watts 4-in Voice Coil 8 Ohm Water Resistant Dust Cap || APPLICATIONS || Mid-Bass | Subwoofer | Woofer | Pro Audio | Bass Guitar || Box Type: Vented | Scoop Loading | Horn Loading || SPECIFICATION || Nominal Basket Diameter : 15", 381 mm || Nominal Impedance* : 8 Ω || Program Power : 2000 W || Watts : 1000 W || Resonance : 39.67 Hz || Usable Frequency Range : 39 Hz - 1.245 kHz || Sensitivity* : 94.9 dB || Magnet Weight : 109 oz. || Gap Height : 0.375", 9.5 mm || Voice Coil Diameter : 4", 101.6 mm || || THIELE & SMALL PARAMETERS (1) || Resonant Frequency (fs) : 39.67 Hz || DC Resistance (Re) : 5.95 Ω || Coil Inductance (Le) : 1.13 m H || Mechanical Q (Qms) : 13.9 || Electromagnetic Q (Qes) : 0.46 || Total Q (Qts) : 0.44 || Compliance Equivalent Volume (Vas) : 142.51 liters / 5.03 cu.ft. || || THIELE & SMALL PARAMETERS (2) || Peak Diaphragm Displacement Volume (Vd) : 634 cc || Mechanical Compliance of Suspension (Cms) : 0.14 mm/N || BL Product (BL) : 19.07 T-M || Diaphragm Mass Inc. Airload (MMs) : 111.87 grams || Efficiency Bandwidth Product (EBP) : 86.96 || Maximum Linear Excursion (Xmax) : 7.4 mm || Surface Area of Cone (Sd) : 856.3 cm2 || Maximum Mechanical Limit (Xlim) : 13 mm || || MOUNTING INFORMATION || Vented : 77.87-198.22 liters / 2.75-7 cu.ft. || Driver Volume Displaced : 263 cu.in. / 4.31 liters || Overall Diameter : 15.24", 387.1 mm || Baffle Hole Diameter : 14", 355.6 mm || Front Sealing Gasket : Yes || Rear Sealing Gasket : Yes || Mounting Holes Diameter : 0.275", 6.985mm || Mounting Holes B.C.D. : 14.56", 369.8mm || Depth : 6.42", 163 mm || Net Weight : 22 lbs, 9.98 kg || Shipping Weight : 26 lbs, 11.79 kgs || || MATERIALS OF CONSTRUCTION : || Coil Construction : Inside/outside Copper voice coil || Coil Former : Fiberglass former || Magnet Composition : Ferrite magnet || Core Details : Vented and extended core || Backplate Details : Vented || Basket Materials : Die-cast aluminum basket || Cone Composition : Water-resistant treated paper cone || Cone Edge Composition : Cloth cone edge || Dust Cap Composition : Water-resistant treated dust cap ||