A high-power, ultra-low frequency enhanced version of the popular Definimax 4012HO. Perfect for horn loading, or in micro-sized vented subwoofers for lots of clean punch and deep lows.
SPECIFICATION
Nominal Basket Diameter
12", 305 mm
Nominal Impedance*
8 Ω
Power Rating*
Program Power
2400 W
Watts
1200 W
Resonance
40 Hz
Usable Frequency Range
37 Hz - 0.2 kHz
Sensitivity*
90.7 dB
Magnet Weight
109 oz.
Gap Height
0.375", 9.5 mm
Voice Coil Diameter
4", 102 mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs)
40 Hz
DC Resistance (Re)
6.2 Ω
Coil Inductance (Le)
4.32m H
Mechanical Q (Qms)
12.13
Electromagnetic Q (Qes)
0.32
Total Q (Qts)
0.31
Compliance Equivalent Volume (Vas)
41.3 liters / 1.46 cu.ft.
Peak Diaphragm Displacement Volume (Vd)
365.4 cc
Mechanical Compliance of Suspension (Cms)
0.1 mm/N
BL Product (BL)
27.38 T-M
Diaphragm Mass Inc. Airload (MMs)
153 grams
Efficiency Bandwidth Product (EBP)
126
Maximum Linear Excursion (Xmax)
6.7 mm
Surface Area of Cone (Sd)
545.4 cm2
Maximum Mechanical Limit (Xlim)
15.5 mm
MOUNTING INFORMATION
Recommended Enclosure Volume
Sealed
N/a
Vented
42.48-113.27 liters / 1.5-4 cu.ft.
Driver Volume Displaced
0.106 cu.ft. / 3 liters
Overall Diameter
12.38", 314.5 mm
Baffle Hole Diameter
11.07", 281.2 mm
Front Sealing Gasket
Yes
Rear Sealing Gasket
Yes
Mounting Holes Diameter
0.27", 6.9mm
Mounting Holes B.C.D.
11.69", 296.9mm
Depth
5.32", 135.1 mm
Net Weight
22.3 lbs, 10.12 kg
Shipping Weight
24.6 lbs, 11.16 kgs
MATERIALS OF CONSTRUCTION
Coil Construction
Copper voice coil
Coil Former
Kapton former
Magnet Composition
Ferrite magnet
Core Details
Undercut with aluminium shorting ring and Core-Periphery Ventilation
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