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Eminence Alpha 3 - 32 ohm 3" 30W Fullrange Line Array Speaker

Eminence Alpha 3 - 32 ohm 3" 30W  Fullrange Line Array Speaker
  •  Frequency Response Graph
Ship weight
2.00 kg
Priced per:
32 ohm
Specifications Sheet:
Cabinet Design:
Your price:
CDN $30.97
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A truly versatile compact full-range driver perfectly suited for tight fitting pro audio line array and column array applications. An 8.3 oz ferrite magnet used in conjunction with an internal neodymium bucking magnet increases the sensitivity and extends the response out to 20kHz. The highly pressed cone sandwiches paper with a layer of water-resistant polypropylene for increased stiffness and lower distortion.


Pro Tip: Wire eight Alpha 3 - 32Ω together in parallel for a total impedance of 4 ohm line array - See Cabinet Design


Speaker Detail
Nominal Basket Diameter3", 76 mm
Nominal Impedance*32 Ω
Power Rating*
Program Power60 W
Watts30 W
Resonance117 Hz
Usable Frequency Range150 Hz - 20 kHz
Sensitivity*88.2 dB
Magnet Weight8 oz.
Gap Height0.08", 2 mm
Voice Coil Diameter0.79", 20 mm
Thiele & Small Parameters
Resonant Frequency (fs)117 Hz
DC Resistance (Re)22.4 Ω
Coil Inductance (Le)0.23m H
Mechanical Q (Qms)5.87
Electromagnetic Q (Qes)0.85
Total Q (Qts)0.74
Compliance Equivalent Volume (Vas)0.98 liters / 0.04 cu.ft.
Peak Diaphragm Displacement Volume (Vd)7.4 cc
Mechanical Compliance of Suspension (Cms)0.86 mm/N
BL Product (BL)6.46 T-M
Diaphragm Mass Inc. Airload (MMs)2 grams
Efficiency Bandwidth Product (EBP)138
Maximum Linear Excursion (Xmax)2.6 mm
Surface Area of Cone (Sd)28.6 cm2
Maximum Mechanical Limit (Xlim)4 mm
Mounting Information
Recommended Enclosure Volume
Sealed 1.13-1.7 liters / 0.04-0.06 cu.ft.
Vented 1.13-1.98 liters / 0.04-0.07 cu.ft.
Driver Volume Displaced0.005 cu.ft. / 0.13 liters
Major Diameter3.98", 101.1 mm
Flat to Flat Diameter3.24", 82.3 mm
Baffle Hole Diameter3.04", 77.2 mm
Front Sealing GasketYes
Rear Sealing GasketYes
Mounting Holes Diameter0.16", 4.1mm
Mounting Holes B.C.D.3.63", 92.1mm
Depth1.76", 44.6 mm
Net Weight0.9 lbs, 0.41 kg
Shipping Weight1.1 lbs, 0.5 kgs
Materials of Construction
Coil ConstructionCopper voice coil
Coil FormerPolyimide former
Magnet CompositionFerrite magnet
Core DetailsVented / Flux source cap
Basket MaterialsPressed steel
Cone CompositionPaper / Poly sandwich cone
Cone Edge CompositionPoly cone edge
Dust Cap CompositionPoly dust cap
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