Eminence Beta 12A-II Woofer
Eminence Beta 12A-II Woofer
Eminence Beta 12A-II Woofer
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Eminence Beta 12A-II Woofer
Eminence Beta 12A-II Woofer
Eminence Beta 12A-II Woofer

Eminence Beta 12A-II Woofer

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Eminence
Price:
$119.99 $144.99

Description

 

Eminence Beta 12A-2

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SPECIFICATION
Nominal Basket Diameter 12", 305 mm
Nominal Impedance* 8 Ω
Power Rating*
Program Power 500 W
Watts 250 W
Resonance 47 Hz
Usable Frequency Range 43 Hz - 3.8 kHz
Sensitivity* 98 dB
Magnet Weight 38 oz.
Gap Height 0.31", 7.9 mm
Voice Coil Diameter 2", 51 mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs) 47 Hz
DC Resistance (Re) 5 Ω
Coil Inductance (Le) 0.64m H
Mechanical Q (Qms) 6
Electromagnetic Q (Qes) 0.5
Total Q (Qts) 0.46
Compliance Equivalent Volume (Vas) 120.1 liters / 4.24 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 237 cc
Mechanical Compliance of Suspension (Cms) 0.29 mm/N
BL Product (BL) 10.8 T-M
Diaphragm Mass Inc. Airload (MMs) 40 grams
Efficiency Bandwidth Product (EBP) 94
Maximum Linear Excursion (Xmax) 4.4 mm
Surface Area of Cone (Sd) 538.9 cm2
Maximum Mechanical Limit (Xlim) 11 mm
MOUNTING INFORMATION
Recommended Enclosure Volume
Sealed 25.5-35.4 liters / 0.9-1.25 cu.ft.
Vented 36.8-139 liters / 1.3-4.9 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 4.57", 116.1 mm
Net Weight 7.5 lbs, 3.4 kg
Shipping Weight 9.7 lbs, 4.4 kgs
MATERIALS OF CONSTRUCTION
Coil Construction Copper voice coil
Coil Former Polyimide former
Magnet Composition Ferrite magnet
Core Details Vented and extended core
   
Basket Materials Pressed steel basket
Cone Composition Paper cone
Cone Edge Composition Cloth cone edge
Dust Cap Composition Solid composition paper dust cap


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