4x Eminence ALPHA-12A 12" 300W 8-Ohms Pro Audio Mid-Bass Speaker Guitar Woofer.

4x Eminence ALPHA-12A 12" 300W 8-Ohms Pro Audio Mid-Bass Speaker Guitar Woofer.

Eminence

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4x Eminence ALPHA-12A T.C.
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Eminence ALPHA-12A 12 300W 8-Ohm

Recommended for professional audio mid-bass applications in a small sealed or medium vented enclosure.

Specification
Nominal Basket Diameter
  • 12", 305 mm
Nominal Impedance
  • 8 Ohm
Power Rating
Program Power
  • 300 W
Watts
  • 150 W
Resonance
  • 49 Hz
Usable Frequency Range
  • 51 Hz - 4.3 kHz
Sensitivity
  • 95.6 dB
Magnet Weight
  • 20 oz.
Gap Height
  • 0.25", 6.4 mm
Voice Coil Diameter
  • 1.5", 38 mm
Thiele & Small Parameters
Resonant Frequency (fs)
  • 49 Hz
DC Resistance (Re)
  • 6.3
Coil Inductance (Le)
  • 0.79m H
Mechanical Q (Qms)
  • 6.53
Electromagnetic Q (Qes)
  • 0.88
Total Q (Qts)
  • 0.77
Compliance Equivalent Volume (Vas)
  • 121.5 liters / 4.29 cu.ft.
Peak Diaphragm Displacement Volume (Vd)
  • 125 cc
Mechanical Compliance of Suspension (Cms)
  • 0.32 mm/N
BL Product (BL)
  • 8.5 T-M
Diaphragm Mass Inc. Airload (MMs)
  • 33 grams
Efficiency Bandwidth Product (EBP)
  • 56
Maximum Linear Excursion (Xmax)
  • 2.4 mm
Surface Area of Cone (Sd)
  • 519.5 cm2
Maximum Mechanical Limit (Xlim)
  • 6.6 mm
Mounting Information
Recommended Enclosure Volume
Sealed
  • 17-22.7 liters / 0.6-0.8 cu.ft.
Vented
  • 56.6-113.3 liters / 2-4 cu.ft.
Driver Volume Displaced
  • 0.063 cu.ft. / 1.78 liters
Overall Diameter
  • 12.26", 311.4 mm
Baffle Hole Diameter
  • 11.06", 280.9 mm
Front Sealing Gasket
  • Yes
Rear Sealing Gasket
  • Yes
Mounting Holes Diameter
  • 0.25", 6.4mm
Mounting Holes B.C.D.
  • 11.71", 297.4mm
Depth
  • 4.73", 120.1 mm
Net Weight
  • 5.3 lbs, 2.4 kg
Shipping Weight
  • 7.4 lbs, 3.36 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 felt dust cap
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