Eminence ALPHA 3: 3 inch Midrange / Full Range Driver
Available in 8, 16 or 32 ohms
Price is for (1) one. Just change the quantity to order more.
* 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.
Click Here to Download 8 ohm PDF Spec Sheet
Click Here to Download 8 ohm PDF Cabinet Design
Click Here to Download 16 ohm PDF Spec Sheet
Click Here to Download 16 ohm PDF Cabinet Design
Click Here to Download 32 ohm PDF Spec Sheet
Click Here to Download 32 ohm PDF Cabinet Design
| 8 ohm Specification | |
| Nominal Basket Diameter | 3″, 76 mm |
| Nominal Impedance* | 8 Ω |
| Power Rating* | |
| Program Power | 60 W |
| Watts | 30 W |
| Resonance | 118 Hz |
| Usable Frequency Range | 150 Hz – 20 kHz |
| Sensitivity* | 88.6 dB |
| Magnet Weight | 8 oz. |
| Gap Height | 0.1″, 2.5 mm |
| Voice Coil Diameter | 0.787″, 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 | |
| Sealed | 0.85-1.42 liters / 0.03-0.05 cu.ft. |
| Vented | 1.42-1.98 liters / 0.05-0.07 cu.ft. |
| Driver Volume Displaced | 0.005 cu.ft. / 0.13 liters |
| Major Diameter | 3.98″, 101.1 mm |
| Flat to Flat Diameter | 3.24″, 82.3 mm |
| Baffle Hole Diameter | 3.04″, 77.2 mm |
| Front Sealing Gasket | Yes |
| Rear Sealing Gasket | Yes |
| Mounting Holes Diameter | 0.16″, 4.1mm |
| Mounting Holes B.C.D. | 3.63″, 92.1mm |
| Depth | 1.76″, 44.6 mm |
| Net Weight | 0.9 lbs, 0.41 kg |
| Shipping Weight | 1.1 lbs, 0.5 kgs |
Materials of Construction |
|
| Coil Construction | Copper voice coil |
| Coil Former | Polyimide former |
| Magnet Composition | Ferrite magnet |
| Core Details | Vented / Flux source cap |
| Basket Materials | Pressed steel |
| Cone Composition | Paper / Poly sandwich cone |
| Cone Edge Composition | Poly cone edge |
| Dust Cap Composition | Poly dust cap |
