Eminence Definimax 4012ULF 12" 8 Ohm 1200W Professional Audio Woofer Speaker - Perfect for PA Systems, DJ Setups & Live Sound Reinforcement
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Description
Does not come with magnet boot or labelled sticker
A high-power, ultra low frequency enhanced version of the popular 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 | 0.37", 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 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 |
