Eminence Definimax 4012ULF 12"Woofer 1200W

SPECIFICATIONS

Nominal Basket Diameter

12", 305 mm

Nominal Impedance*

8 Ω

Power Rating**

Watts

1200 W

Music Program

2400 W

Resonance

49 Hz

Usable Frequency Range

48 Hz - 2.6 kHz

Sensitivity***

96.2 dB

Magnet Weight

109 oz.

Gap Height

0.375", 9.5 mm

Voice Coil Diameter

4", 102 mm

THIELE & SMALL PARAMETERS

Resonant Frequency (fs)

49 Hz

DC Resistance (Re)

5.81 Ω

Coil Inductance (Le)

1.19m H

Mechanical Q (Qms)

11.07

Electromagnetic Q (Qes)

0.34

Total Q (Qts)

0.33

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)

20.7 T-M

Diaphragm Mass Inc. Airload (MMs)

82 grams

Efficiency Bandwidth Product (EBP)

144

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

25.49-42.48 liters / 0.9-1.5 cu.ft.

Vented

36.25-82.12 liters / 1.28-2.9 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

Paper cone

Cone Edge Composition

Cloth cone edge

Dust Cap Composition

Treated Paper Pop-on dust cap