Brand New Genuine Eminence 8″ Beta Coaxial Speaker. Recommended for professional audio mid-range reproduction in sealed enclosures. Also suitable for mid-bass or floor monitor applications in vented 2-way cabinets. Recommended high frequency driver APT50 is sold separately.
SPECIFICATION | |
Nominal Basket Diameter | 8″, 203 mm |
Nominal Impedance* | 8 Ω |
Power Rating* | |
Program Power | 500 W |
Watts | 250 W |
Resonance | 62 Hz |
Usable Frequency Range | 95 Hz – 3.3 kHz |
Sensitivity* | 92.9 dB |
Magnet Weight | 38 oz. |
Gap Height | 0.312″, 7.9 mm |
Voice Coil Diameter | 2″, 51 mm |
THIELE & SMALL PARAMETERS | |
Resonant Frequency (fs) | 62 Hz |
DC Resistance (Re) | 5.37 Ω |
Coil Inductance (Le) | 0.67m H |
Mechanical Q (Qms) | 6.57 |
Electromagnetic Q (Qes) | 0.31 |
Total Q (Qts) | 0.29 |
Compliance Equivalent Volume (Vas) | 21.43 liters / 0.76 cu.ft. |
Peak Diaphragm Displacement Volume (Vd) | 67.2 cc |
Mechanical Compliance of Suspension (Cms) | 0.35 mm/N |
BL Product (BL) | 11.21 T-M |
Diaphragm Mass Inc. Airload (MMs) | 19 grams |
Efficiency Bandwidth Product (EBP) | 201 |
Maximum Linear Excursion (Xmax) | 3.2 mm |
Surface Area of Cone (Sd) | 210 cm2 |
Maximum Mechanical Limit (Xlim) | 6.9 mm |
MOUNTING INFORMATION | |
Recommended Enclosure Volume | |
Sealed | 3.4-9.91 liters / 0.12-0.35 cu.ft. |
Vented | 7.08-16.99 liters / 0.25-0.6 cu.ft. |
Driver Volume Displaced | 0.028 cu.ft. / 0.79 liters |
Overall Diameter | 8.24″, 209.3 mm |
Baffle Hole Diameter | 7.13″, 181.1 mm |
Front Sealing Gasket | Yes |
Rear Sealing Gasket | Yes |
Mounting Holes Diameter | 0.22″, 5.6mm |
Mounting Holes B.C.D. | 7.75″, 196.9mm |
Depth | 3.5″, 88.9 mm |
Net Weight | 6.8 lbs, 3.08 kg |
Shipping Weight | 7.5 lbs, 3.4 kgs |
MATERIALS OF CONSTRUCTION | |
Coil Construction | Copper voice coil |
Coil Former | Kapton former |
Magnet Composition | Ferrite magnet |
Core Details | Tapered Coax |
Basket Materials | Pressed steel basket |
Cone Composition | Paper Cone |
Cone Edge Composition | Sealed cloth cone edge |
Dust Cap Composition | Zurette dust cap |
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