Eminence Definimax4018lf 18" Pro Woofer; 1600w Max; 8 Ohms W/copper Voice Coil & Acrylic Wetlook Paper Cone

This item is brand-new, factory sealed.

This table charts the specifications for the DEFINIMAXT 4018LF speaker
* Nominal Basket Diameter: 18-in , 457 mm.
* Nominal Impedance: 8 Ohms.
* Power Rating:
* Watts: 800 W.
* Music Program: 1600 W.
* Resonance: 32 Hz.
* Usable Frequency Range: 36 Hz - 0.2 kHz.
* Sensitivity: 95 dB.
* Magnet Weight: 109 oz..
* Gap Height: 0.375-in , 9.5 mm.
* Voice Coil Diameter: 4-in , 102 mm.
* Thiele & Small Parameters.
* Resonant Frequency (fs): 32 Hz.
* DC Resistance (Re): 6.19 Ohms.
* Coil Inductance (Le): 4.78m H.
* Mechanical Q (Qms): 10.38.
* Electromagnetic Q (Qes): 0.36.
* Total Q (Qts): 0.35.
* Compliance Equivalent Volume (Vas): 237.9 liters / 8.4 cu.ft..
* Peak Diaphragm Displacement Volume (Vd): 939 cc.
* Mechanical Compliance of Suspension (Cms): 0.12 mm/N.
* BL Product (BL): 27 T-M.
* Diaphragm Mass Inc. Airload (MMs): 211 grams.
* Efficiency Bandwidth Product (EBP): 89.
* Maximum Linear Excursion (Xmax): 7.9 mm.
* Surface Area of Cone (Sd): 1188 cm2.
* Maximum Mechanical Limit (Xlim): 15.9 mm.
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Recommended Enclosure Volume;
* Sealed: N/a.
* Vented: 125-210 liters / 4.4-7.4 cu.ft..
* Driver Volume Displaced: 0.234 cu.ft. / 6.62 liters.
* Overall Diameter: 18-in , 457.2 mm.
* Baffle Hole Diameter: 16.57-in , 420.9 mm.
* Front Sealing Gasket: Yes.
* Rear Sealing Gasket: Yes.
* Mounting Holes Diameter: 0.28-in , 7.1mm.
* Mounting Holes B.C.D.: 17.25-in , 438.2mm.
* Depth: 8.13-in , 206.5 mm.
* Net Weight: 24 lbs, 10.89 kg.
* Shipping Weight: 26 lbs, 11.79 kgs.
* Materials of Construction.
* Coil Construction: Copper voice coil.
* Coil Former: Polyimide former.
* Magnet Composition: Ferrite magnet.
* Core Details: Undercut w/aluminum shorting ring & Core Periphery Ventilation.
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* Basket Materials: Die-cast aluminum basket.
* Cone Composition: Water resistant paper cone.
* Cone Edge Composition: Cloth cone edge.
* Dust Cap Composition: Water resistant treated paper dust cap.