Eminence DEFINIMAX™ 4018LF 18"

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Nominal Basket Diameter	18", 457.2mm
Nominal Impedance*	8 ohms
Power Rating
Watts	800W
Music Program	1600W
Resonance	32Hz
Usable Frequency Range	36Hz-200Hz
Sensitivity***	95
Magnet Weight	109 oz.
Gap Height	0.375", 9.53mm
Voice Coil Diameter	4", 101.6mm

THIELE & SMALL PARAMETERS
Resonant Frequency (fs)	32Hz

DC Resistance (Re)	6.19
Coil Inductance (Le)	4.78mH
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)	939cc
Mechanical Compliance of Suspension (Cms)	0.12mm/N
BL Product (BL)	27.0 T-M
Diaphram Mass inc. Airload (Mms)	211 grams
Efficiency Bandwidth Product (EBP)	89
Maximum Linear Excursion (Xmax)	7.9mm
Surface Area of Cone (Sd)	1188.0 cm2
Maximum Mechanical Limit (Xlim)	15.9mm
MOUNTING INFORMATION
Recommended Enclosure
Sealed
Vented	125-210 liters/ 4.4-7.4 cu.ft.
Overall Diameter	18", 457.2mm
Baffle Hole Diameter	16.57", 420.9mm
Front Sealing Gasket	fitted as standard
Rear Sealing Gasket	fitted as standard
Mounting Holes Diameter	0.28", 7mm
Mounting Holes B.C. D.	17.25", 438.2mm
Depth	8.13", 206.4mm
Net Weight	24 lbs, 10.9 kg
Shipping Weight	26 lbs, 11.8 kg
MATERIALS OF CONSTRUCTION
Coil Construction	Copper voice coil
Coil Former	Polyimide former
Magnet Composition	Ferrite magnet
Core Details	Undercut with copper shorting ring and Core Periphery Ventilation
Basket Materials	Die-cast aluminum basket
Cone Composition	Acrylic Wetlook Paper Cone
Cone Edge Composition	Cloth cone edge
Dustcap Composition	Acrylic wetlook paper dust cap