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Eminence Alpha-8MRA - 8 ohm 8" 125W Sealed Basket Pro Audio Midrange

Eminence Alpha-8MRA - 8 ohm 8" 125W Sealed Basket Pro Audio Midrange
Ship weight
2.32 kg
Priced per:
8 ohm
Specifications Sheet:
Cabinet Design:
Your price:
CDN $85.97
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Recommended for professional audio and bass guitar applications as a mid-range. Sealed basket makes this woofer independent of enclosure design.

Speaker Detail
Nominal Basket Diameter8", 203 mm
Nominal Impedance*8 Ω
Power Rating*
Program Power250 W
Watts125 W
Resonance514 Hz
Usable Frequency Range400 Hz - 4.8 kHz
Sensitivity*100.9 dB
Magnet Weight20 oz.
Gap Height0.25", 6.4 mm
Voice Coil Diameter1.5", 38 mm
Thiele & Small Parameters
Resonant Frequency (fs)514 Hz
DC Resistance (Re)7.32 Ω
Coil Inductance (Le)0.34m H
Mechanical Q (Qms)4.48
Electromagnetic Q (Qes)2.08
Total Q (Qts)1.42
Compliance Equivalent Volume (Vas)0.8 liters / 0.03 cu.ft.
Mechanical Compliance of Suspension (Cms)0.01 mm/N
BL Product (BL)8.9 T-M
Diaphragm Mass Inc. Airload (MMs)7 grams
Efficiency Bandwidth Product (EBP)247
Maximum Linear Excursion (Xmax)1.6 mm
Surface Area of Cone (Sd)205.9 cm2
Maximum Mechanical Limit (Xlim)3 mm
Mounting Information
Recommended Enclosure Volume
Sealed N/a
Vented - liters / - cu.ft.
Driver Volume Displaced0.02 cu.ft. / 0.58 liters
Overall Diameter8.22", 208.8 mm
Baffle Hole Diameter7.19", 182.6 mm
Front Sealing GasketYes
Rear Sealing GasketYes
Mounting Holes Diameter0.22", 5.6mm
Mounting Holes B.C.D.7.78", 197.6mm
Depth3.25", 82.6 mm
Net Weight4.4 lbs, 2 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 with closed back
Cone CompositionPaper cone
Cone Edge CompositionPaper cone edge
Dust Cap CompositionSolid composition paper dust cap
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