A high-power, ultra-low frequency enhanced version of the popular Definimax 4015LF. Perfect for horn loading, or in small to medium-sized vented subwoofers for lots of clean punch and deep lows.

SPECIFICATION
Nominal Basket Diameter	15", 381 mm
Nominal Impedance*	8 Ω
Power Rating*
Program Power	2400 W
Watts	1200 W
Resonance	38 Hz
Usable Frequency Range	35 Hz - 0.2 kHz
Sensitivity*	93 dB
Magnet Weight	109 oz.
Gap Height	0.375", 9.5 mm
Voice Coil Diameter	4", 102 mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs)	38 Hz
DC Resistance (Re)	6.19 Ω
Coil Inductance (Le)	4.43m H
Mechanical Q (Qms)	10.27
Electromagnetic Q (Qes)	0.35
Total Q (Qts)	0.34
Compliance Equivalent Volume (Vas)	101.79 liters / 3.59 cu.ft.
Peak Diaphragm Displacement Volume (Vd)	625 cc
Mechanical Compliance of Suspension (Cms)	0.1 mm/N
BL Product (BL)	26.79 T-M
Diaphragm Mass Inc. Airload (MMs)	173 grams
Efficiency Bandwidth Product (EBP)	107
Maximum Linear Excursion (Xmax)	7.3 mm
Surface Area of Cone (Sd)	856.3 cm2
Maximum Mechanical Limit (Xlim)	15.5 mm
MOUNTING INFORMATION
Recommended Enclosure Volume
Sealed	N/a
Vented	48.14-148.66 liters / 1.7-5.25 cu.ft.
Driver Volume Displaced	0.152 cu.ft. / 4.31 liters
Overall Diameter	15.21", 386.3 mm
Baffle Hole Diameter	14", 355.6 mm
Front Sealing Gasket	Yes
Rear Sealing Gasket	Yes
Mounting Holes Diameter	0.28", 7.1mm
Mounting Holes B.C.D.	14.56", 369.8mm
Depth	6.56", 166.6 mm
Net Weight	23.7 lbs, 10.75 kg
Shipping Weight	26 lbs, 11.79 kgs
MATERIALS OF CONSTRUCTION
Coil Construction	Copper voice coil
Coil Former	Kapton former
Magnet Composition	Ferrite magnet
Core Details	Undercut with aluminum shorting ring and Core-Periphery Ventilation

Basket Materials	Die-cast aluminium basket
Cone Composition	Water resistant paper cone
Cone Edge Composition	Cloth cone edge
Dust Cap Composition	Water resistant treated paper dust cap

Eminence DEFINIMAX 4015ULF-8 15" 1200 Watts

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