Eminence Alpha-8A 8" PA Driver
The stamped-steel frame Eminence Alpha-8A 8" PA Driver is an ideal woofer for small P.A. and club speaker systems, as well as keyboard or guitar amplifier combos. Made in the USA. 7-year manufacturer's warranty!
| PRODUCT SPECIFICATIONS |
| Power Handling (RMS) |
125 Watts |
| Power Handling (max) |
250 Watts |
| Impedance |
8 ohms |
| Frequency Response |
58 to 5,000 Hz |
| Sensitivity |
94 dB 1W/1m |
| Voice Coil Diameter |
1.5" |
| Magnet Weight |
20 oz. |
| THIELE-SMALL PARAMETERS |
| Resonant Frequency (Fs) |
73 Hz |
| DC Resistance (Re) |
5.3 ohms |
| Voice Coil Inductance (Le) |
0.44 mH |
| Mechanical Q (Qms) |
4.60 |
| Electromagnetic Q (Qes) |
0.68 |
| Total Q (Qts) |
0.59 |
| Compliance Equivalent Volume (Vas) |
0.6 ft.³ |
| Mechanical Compliance of Suspension (Cms) |
0.28 mm/N |
| BL Product (BL) |
7.8 Tm |
| Diaphragm Mass Inc. Airload (Mms) |
17g |
| Maximum Linear Excursion (Xmax) |
3.2 mm |
| Surface Area of Cone (Sd) |
210 cm² |
| MATERIALS OF CONSTRUCTION |
| Cone Material |
Paper |
| Surround Material |
Cloth |
| Voice Coil Wire Material |
Copper |
| Voice Coil Former |
Kapton® / Polyimide |
| Basket / Frame Material |
Steel |
| Magnet Material |
Ferrite |
| MOUNTING INFORMATION |
| Overall Outside Diameter |
8.24" |
| Baffle Cutout Diameter |
7.13" |
| Depth |
3.25" |
| # Mounting Holes |
8 |
| OPTIMUM CABINET SIZE * |
| Sealed Volume |
0.51 ft.³ |
| Sealed F3 |
106 Hz |
| Vented Volume |
1.28 ft.³ |
| Vented F3 |
52 Hz |
| * Enclosure volume/F3s based on BassBox "optimum" calculations |
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