EMINENCE IMPERO18C

High power driver recommended for pro audio in vented enclosures. Suited for full-range three-way boxes, bass guitar boxes, & small subwoofers. 4 ohm.
SKU: IMPERO18C
Availability: Out of stock

This table charts the specifications for the IMPEROT 18C speaker
* Nominal Basket Diameter: 18-in , 457 mm.
* Nominal Impedance: 4 Ohms.
* Power Rating:
* Watts: 1200 W.
* Music Program: 2400 W.
* Resonance: 31 Hz.
* Usable Frequency Range: 36 Hz - 0.8 kHz.
* Sensitivity: 94.5 dB.
* Magnet Weight: 109 oz..
* Gap Height: 0.5-in , 12.7 mm.
* Voice Coil Diameter: 4-in , 102 mm.
* Thiele & Small Parameters.
* Resonant Frequency (fs): 31 Hz.
* DC Resistance (Re): 3.13 Ohms.
* Coil Inductance (Le): 1.09m H.
* Mechanical Q (Qms): 10.13.
* Electromagnetic Q (Qes): 0.35.
* Total Q (Qts): 0.34.
* Compliance Equivalent Volume (Vas): 317.02 liters / 11.2 cu.ft..
* Peak Diaphragm Displacement Volume (Vd): 942.7 cc.
* Mechanical Compliance of Suspension (Cms): 0.17 mm/N.
* BL Product (BL): 16.1 T-M.
* Diaphragm Mass Inc.
Airload (MMs): 148 grams.
* Efficiency Bandwidth Product (EBP): 89.
* Maximum Linear Excursion (Xmax): 8.13 mm.
* Surface Area of Cone (Sd): 1159 cm2.
* Maximum Mechanical Limit (Xlim): 20.2 mm.
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Recommended Enclosure Volume;
* Sealed: N/a.
* Vented: 118.93-339.8 liters / 4.2-12 cu.ft..
* Driver Volume Displaced: 0.237 cu.ft.
/ 6.7 liters.
* Overall Diameter: 18-in , 457.2 mm.
* Baffle Hole Diameter: 16.56-in , 420.6 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: 8.31-in , 211.1 mm.
* Net Weight: 27.3 lbs, 12.38 kg.
* Shipping Weight: 30.8 lbs, 13.97 kgs.
* Materials of Construction.
* Coil Construction: Copper voice coil.
* Coil Former: Fiberglass former.
* Magnet Composition: Ferrite magnet.
* Core Details: Bumped Vented Extended core.
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* Basket Materials: Die-cast aluminum basket.
* Cone Composition: Water resistant paper cone.
* Cone Edge Composition: Treated cloth cone edge.
* Dust Cap Composition: Water resistant treated paper dust cap.