The Eminence Alpha 3-8 is a truly 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 out to 20kHz. The highly pressed cone sandwiches paper with a layer of water-resistant polypropylene for increased stiffness and lower distortion.
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\n| SPECIFICATION |
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\n| Nominal Basket Diameter |
\n3", 76 mm |
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\n| Nominal Impedance* |
\n8 Ω |
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\n| Power Rating* |
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\n| Program Power |
\n60 W |
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\n| Watts |
\n30 W |
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\n| Resonance |
\n118 Hz |
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\n| Usable Frequency Range |
\n150 Hz - 20 kHz |
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\n| Sensitivity* |
\n88.6 dB |
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\n| Magnet Weight |
\n8 oz. |
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\n| Gap Height |
\n0.1", 2.5 mm |
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\n| Voice Coil Diameter |
\n0.787", 20 mm |
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\n| THIELE & SMALL PARAMETERS |
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\n| Resonant Frequency (fs) |
\n118 Hz |
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\n| DC Resistance (Re) |
\n5.12 Ω |
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\n| Coil Inductance (Le) |
\n0.11m H |
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\n| Mechanical Q (Qms) |
\n7.94 |
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\n| Electromagnetic Q (Qes) |
\n0.53 |
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\n| Total Q (Qts) |
\n0.5 |
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\n| Compliance Equivalent Volume (Vas) |
\n0.95 liters / 0.03 cu.ft. |
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\n| Peak Diaphragm Displacement Volume (Vd) |
\n6.9 cc |
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\n| Mechanical Compliance of Suspension (Cms) |
\n0.84 mm/N |
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\n| BL Product (BL) |
\n3.93 T-M |
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\n| Diaphragm Mass Inc. Airload (MMs) |
\n2 grams |
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\n| Efficiency Bandwidth Product (EBP) |
\n220 |
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\n| Maximum Linear Excursion (Xmax) |
\n2.4 mm |
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\n| Surface Area of Cone (Sd) |
\n28.6 cm2 |
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\n| Maximum Mechanical Limit (Xlim) |
\n4 mm |
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\n| MOUNTING INFORMATION |
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\n| Recommended Enclosure Volume |
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\n| Sealed |
\nAcceptable |
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\n| Vented |
\nAcceptable |
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\n| Driver Volume Displaced |
\n0.005 cu.ft. / 0.13 liters |
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\n| Overall Diameter |
\n3.98", 101.1 mm |
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\n| Baffle Hole Diameter |
\n3.04", 77.2 mm |
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\n| Front Sealing Gasket |
\nYes |
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\n| Rear Sealing Gasket |
\nYes |
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\n| Mounting Holes Diameter |
\n0.16", 4.1mm |
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\n| Mounting Holes B.C.D. |
\n3.63", 92.1mm |
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\n| Depth |
\n1.76", 44.6 mm |
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\n| Net Weight |
\n0.9 lbs, 0.41 kg |
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\n| Shipping Weight |
\n1.1 lbs, 0.5 kgs |
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\n| MATERIALS OF CONSTRUCTION |
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\n| Coil Construction |
\nCopper voice coil |
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\n| Coil Former |
\nPolyimide former |
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\n| Magnet Composition |
\nFerrite magnet |
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\n| Core Details |
\nVented / Flux source cap |
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\n| Basket Materials |
\nPressed steel basket |
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\n| Cone Composition |
\nPaper/Poly sandwich cone |
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\n| Cone Edge Composition |
\nPoly cone edge |
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\n| Dust Cap Composition |
\nPoly dust cap |
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