NOTE - Price is for 1 piece Eminence Alpha 3-8, not a pair.

The Eminence Alpha 3-8 is a versatile, compact, full-range driver perfectly suited for tight-fitting pro audio line array and column array applications. With a program power rating of 60 watts, this 3" driver utilizes an 8.3 oz ferrite magnet in conjunction with an internal neodymium bucking magnet for increased sensitivity and extends the response to 20kHz. The highly pressed cone sandwiches paper with a layer of water-resistant polypropylene for increased stiffness and lower distortion.

SPECIFICATION
Nominal Basket Diameter3", 76 mm
Nominal Impedance*8 Ω
Power Rating*
Program Power60 W
Watts30 W
Resonance118 Hz
Usable Frequency Range150 Hz - 20 kHz
Sensitivity*88.6 dB
Magnet Weight8 oz.
Gap Height0.1", 2.5 mm
Voice Coil Diameter0.787", 20 mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs)118 Hz
DC Resistance (Re)5.12 Ω
Coil Inductance (Le)0.11m H
Mechanical Q (Qms)7.94
Electromagnetic Q (Qes)0.53
Total Q (Qts)0.5
Compliance Equivalent Volume (Vas)0.95 liters / 0.03 cu.ft.
Peak Diaphragm Displacement Volume (Vd)6.9 cc
Mechanical Compliance of Suspension (Cms)0.84 mm/N
BL Product (BL)3.93 T-M
Diaphragm Mass Inc. Airload (MMs)2 grams
Efficiency Bandwidth Product (EBP)220
Maximum Linear Excursion (Xmax)2.4 mm
Surface Area of Cone (Sd)28.6 cm2
Maximum Mechanical Limit (Xlim)4 mm
MOUNTING INFORMATION
Recommended Enclosure Volume
SealedAcceptable
VentedAcceptable
Driver Volume Displaced0.005 cu.ft. / 0.13 liters
Overall Diameter3.98", 101.1 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 basket
Cone CompositionPaper/Poly sandwich cone
Cone Edge CompositionPoly cone edge
Dust Cap CompositionPoly dust cap