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Eminence Alpha-8A - 8 ohm 8" 125W Pro Audio Woofer

Eminence Alpha-8A - 8 ohm 8" 125W Pro Audio Woofer
Ship weight
2.32 kg
Priced per:
8 ohm
Specifications Sheet:
Cabinet Design:
Your price:
CDN $86.97
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Recommended for professional audio mid-range applications in a sealed cabinet, or as a mid-bass in a vented satellite enclosure.

Speaker Detail
Nominal Basket Diameter8", 203 mm
Nominal Impedance*8 Ω
Power Rating*
Program Power250 W
Watts125 W
Resonance73 Hz
Usable Frequency Range58 Hz - 5 kHz
Sensitivity*94 dB
Magnet Weight20 oz.
Gap Height0.25", 6.4 mm
Voice Coil Diameter1.5", 38 mm
Thiele & Small Parameters
Resonant Frequency (fs)73 Hz
DC Resistance (Re)5.3 Ω
Coil Inductance (Le)0.44m H
Mechanical Q (Qms)4.6
Electromagnetic Q (Qes)0.68
Total Q (Qts)0.59
Compliance Equivalent Volume (Vas)17.7 liters / 0.63 cu.ft.
Peak Diaphragm Displacement Volume (Vd)67 cc
Mechanical Compliance of Suspension (Cms)0.28 mm/N
BL Product (BL)7.8 T-M
Diaphragm Mass Inc. Airload (MMs)17 grams
Efficiency Bandwidth Product (EBP)107
Maximum Linear Excursion (Xmax)3.2 mm
Surface Area of Cone (Sd)210 cm2
Maximum Mechanical Limit (Xlim)7.1 mm
Mounting Information
Recommended Enclosure Volume
Sealed 5-7 liters / 0.18-0.25 cu.ft.
Vented 16.7-25.5 liters / 0.59-0.9 cu.ft.
Driver Volume Displaced0.02 cu.ft. / 0.58 liters
Overall Diameter8.24", 209.3 mm
Baffle Hole Diameter7.13", 181.1 mm
Front Sealing GasketYes
Rear Sealing GasketYes
Mounting Holes Diameter0.22", 5.6mm
Mounting Holes B.C.D.7.75", 196.9mm
Depth3.25", 82.6 mm
Net Weight4.3 lbs, 1.95 kg
Shipping Weight5.1 lbs, 2.31 kgs
Materials of Construction
Coil ConstructionCopper voice coil
Coil FormerPolyimide former
Magnet CompositionFerrite magnet
Core DetailsVented core
Basket MaterialsPressed steel basket
Cone CompositionPaper cone
Cone Edge CompositionCloth cone edge
Dust Cap CompositionSolid composition paper dust cap
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