Brand: Eminence

Product Code: IMPERO18C

Availability:Out of stock

$865.00 865.00

High power driver recommended for pro audio in vented enclosures. Suited for full-range three-way boxes, bass guitar boxes, and small subwoofers. 4 ohm.

Nominal Basket Diameter 18", 457 mm
Nominal Impedance* 4 Ω
Power Rating*
Program Power 2400 W
Watts 1200 W
Resonance 31 Hz
Usable Frequency Range 36 Hz - 0.8 kHz
Sensitivity* 94.5 dB
Magnet Weight 109 oz.
Gap Height 0.5", 12.7 mm
Voice Coil Diameter 4", 102 mm
Resonant Frequency (fs) 31 Hz
DC Resistance (Re) 3.13 Ω
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
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", 457.2 mm
Baffle Hole Diameter 16.56", 420.6 mm
Front Sealing Gasket Yes
Rear Sealing Gasket Yes
Mounting Holes Diameter 0.28", 7.1mm
Mounting Holes B.C.D. 17.25", 438.2mm
Depth 8.31", 211.1 mm
Net Weight 27.3 lbs, 12.38 kg
Shipping Weight 30.8 lbs, 13.97 kgs
Coil Construction Copper voice coil
Coil Former Fibreglass former
Magnet Composition Ferrite magnet
Core Details Bumped Vented Extended core
Basket Materials Die-cast aluminium basket
Cone Composition Water resistant paper cone
Cone Edge Composition Treated cloth cone edge
Dust Cap Composition Water resistant treated paper dust cap