Eminence Definimax 4012HO - 8 ohm 12" 600W Pro Audio Woofer

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SKU: 555-019

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High output, low distortion mid-bass or woofer with a broad frequency response. Recommended for pro audio in both sealed and vented enclosures.

Manufacturer Spec Sheet

Example Cabinet Designs

Speaker Detail
Nominal Basket Diameter 12", 305 mm
Nominal Impedance* 8 Ω
Power Rating*
Program Power 1200 W
Watts 600 W
Resonance 51 Hz
Usable Frequency Range 48 Hz - 2.7 kHz
Sensitivity* 96.2 dB
Magnet Weight 109 oz.
Gap Height 0.37", 9.5 mm
Voice Coil Diameter 4", 102 mm
Thiele & Small Parameters
Resonant Frequency (fs) 51 Hz
DC Resistance (Re) 5.52 Ω
Coil Inductance (Le) 0.95m H
Mechanical Q (Qms) 11.03
Electromagnetic Q (Qes) 0.36
Total Q (Qts) 0.35
Compliance Equivalent Volume (Vas) 53.68 liters / 1.9 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 338.2 cc
Mechanical Compliance of Suspension (Cms) 0.13 mm/N
BL Product (BL) 19.56 T-M
Diaphragm Mass Inc. Airload (MMs) 78 grams
Efficiency Bandwidth Product (EBP) 142
Maximum Linear Excursion (Xmax) 6.2 mm
Surface Area of Cone (Sd) 545.4 cm2
Maximum Mechanical Limit (Xlim) 11.2 mm
Mounting Information
Recommended Enclosure Volume
Sealed 25.49-76.46 liters / 0.9-2.7 cu.ft.
Vented 33.98-99.11 liters / 1.2-3.5 cu.ft.
Driver Volume Displaced 0.106 cu.ft. / 3 liters
Overall Diameter 12.38", 314.5 mm
Baffle Hole Diameter 11.06", 280.9 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 22.5 lbs, 10.21 kg
Shipping Weight 24.8 lbs, 11.25 kgs
Materials of Construction
Coil Construction Edge wound 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 aluminum basket
Cone Composition Water resistant paper cone
Cone Edge Composition Cloth cone edge
Dust Cap Composition Water resistant treated paper dust cap
response graph

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