Recommended for professional audio as a woofer in small sealed monitors, or as a PA woofer or monitor in a vented enclosure.

SPECIFICATION
Nominal Basket Diameter	12", 305 mm
Nominal Impedance*	8 Ω
Power Rating*
Program Power	450 W
Watts	225 W
Resonance	45 Hz
Usable Frequency Range	48 Hz - 8 kHz
Sensitivity*	97.7 dB
Magnet Weight	38 oz.
Gap Height	0.312", 7.9 mm
Voice Coil Diameter	2", 51 mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs)	45 Hz
DC Resistance (Re)	7.37 Ω
Coil Inductance (Le)	0.83m H
Mechanical Q (Qms)	6.44
Electromagnetic Q (Qes)	0.55
Total Q (Qts)	0.51
Compliance Equivalent Volume (Vas)	136.3 liters / 4.81 cu.ft.
Peak Diaphragm Displacement Volume (Vd)	170 cc
Mechanical Compliance of Suspension (Cms)	0.34 mm/N
BL Product (BL)	11.7 T-M
Diaphragm Mass Inc. Airload (MMs)	36 grams
Efficiency Bandwidth Product (EBP)	82
Maximum Linear Excursion (Xmax)	3.2 mm
Surface Area of Cone (Sd)	532.4 cm2
Maximum Mechanical Limit (Xlim)	8 mm
MOUNTING INFORMATION
Recommended Enclosure Volume
Sealed	14-51 liters / 0.5-1.8 cu.ft.
Vented	56.6-116 liters / 2-4.1 cu.ft.
Driver Volume Displaced	0.071 cu.ft. / 2 liters
Overall Diameter	12.03", 305.6 mm
Baffle Hole Diameter	11.07", 281.2 mm
Front Sealing Gasket	Yes
Rear Sealing Gasket	Yes
Mounting Holes Diameter	0.25", 6.4mm
Mounting Holes B.C.D.	11.59", 294.4mm
Depth	4.47", 113.5 mm
Net Weight	8.1 lbs, 3.67 kg
Shipping Weight	10.2 lbs, 4.63 kgs
MATERIALS OF CONSTRUCTION
Coil Construction	Copper voice coil
Coil Former	Polyimide former
Magnet Composition	Ferrite magnet
Core Details	Vented core

Basket Materials	Pressed steel basket
Cone Composition	Paper cone
Cone Edge Composition	Cloth cone edge
Dust Cap Composition	Solid composition paper dust cap

Eminence BETA-12LTA 12" Speaker Twin Cone 225 Watts

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