Eminence ALPHA-8MRA 8" Speaker
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Eminence ALPHA-8MRA 8" Speaker
Recommended for pro audio and bass guitar applications as a midrange. Sealed basket makes this woofer independent of enclosure design.
SPECIFICATION | |
Nominal Basket Diameter | 8", 203 mm |
Nominal Impedance* | 8 Ω |
Power Rating* | |
Program Power | 250 W |
Watts | 125 W |
Resonance | 514 Hz |
Usable Frequency Range | 400 Hz - 4.8 kHz |
Sensitivity* | 100.9 dB |
Magnet Weight | 20 oz. |
Gap Height | 0.25", 6.4 mm |
Voice Coil Diameter | 1.5", 38 mm |
THIELE & SMALL PARAMETERS | |
Resonant Frequency (fs) | 514 Hz |
DC Resistance (Re) | 7.32 Ω |
Coil Inductance (Le) | 0.34m H |
Mechanical Q (Qms) | 4.48 |
Electromagnetic Q (Qes) | 2.08 |
Total Q (Qts) | 1.42 |
Compliance Equivalent Volume (Vas) | 0.8 liters / 0.03 cu.ft. |
Peak Diaphragm Displacement Volume (Vd) | 0 cc |
Mechanical Compliance of Suspension (Cms) | 0.01 mm/N |
BL Product (BL) | 8.9 T-M |
Diaphragm Mass Inc. Airload (MMs) | 7 grams |
Efficiency Bandwidth Product (EBP) | 247 |
Maximum Linear Excursion (Xmax) | 1.6 mm |
Surface Area of Cone (Sd) | 205.9 cm2 |
Maximum Mechanical Limit (Xlim) | 3 mm |
MOUNTING INFORMATION | |
Recommended Enclosure Volume | |
Sealed | N/a |
Vented | - liters / - cu.ft. |
Driver Volume Displaced | 0.02 cu.ft. / 0.58 liters |
Overall Diameter | 8.22", 208.8 mm |
Baffle Hole Diameter | 7.19", 182.6 mm |
Front Sealing Gasket | Yes |
Rear Sealing Gasket | Yes |
Mounting Holes Diameter | 0.22", 5.6mm |
Mounting Holes B.C.D. | 7.78", 197.6mm |
Depth | 3.25", 82.6 mm |
Net Weight | 4.4 lbs, 2 kg |
Shipping Weight | 5.1 lbs, 2.31 kgs |
MATERIALS OF CONSTRUCTION | |
Coil Construction | Copper voice coil |
Coil Former | Polyimide former |
Magnet Composition | Ferrite magnet |
Core Details | Vented core |
Basket Materials | Pressed steel basket with closed back |
Cone Composition | Paper Cone |
Cone Edge Composition | Paper cone edge |
Dust Cap Composition | Solid composition paper dust cap |
Do you have any question?
info@thespeakerfactory.com.au
+61 457 205 573
Mon - Fri: 9:00am - 4:00pm
- +61 457 205 573
- info@thespeakerfactory.com.au