Authentic Eminence Beta-8A 8" 225 Watt RMS 8 Ohm Mid-Bass Speaker

Description

Nominal Basket Diameter: 8", 203 mm
Nominal Impedance*: 8 Ω
Power Rating**
Watts: 225 W
Music Program: 450 W
Resonance: 65 Hz
Usable Frequency Range: 78 Hz - 4.5 kHz
Sensitivity***: 95.1 dB
Magnet Weight: 34 oz.
Gap Height: 0.312", 7.9 mm
Voice Coil Diameter: 2", 51 mm
Thiele & Small Parameters
Resonant Frequency (fs): 65 Hz
DC Resistance (Re): 5.99 Ω
Coil Inductance (Le): 0.49m H
Mechanical Q (Qms): 4.95
Electromagnetic Q (Qes): 0.42
Total Q (Qts): 0.38
Compliance Equivalent Volume (Vas): 23.3 liters / 0.82 cu.ft.
Peak Diaphragm Displacement Volume (Vd): 63 cc
Mechanical Compliance of Suspension (Cms): 0.37 mm/N
BL Product (BL): 9.6 T-M
Diaphragm Mass Inc. Airload (MMs): 16 grams
Efficiency Bandwidth Product (EBP): 156
Maximum Linear Excursion (Xmax): 3 mm
Surface Area of Cone (Sd): 210 cm2
Maximum Mechanical Limit (Xlim): 7.4 mm.
Mounting Information
Recommended Enclosure Volume
Sealed: 5.7-9.9 liters / 0.2-0.35 cu.ft.
Vented: 8.5-19 liters / 0.3-0.67 cu.ft.
Driver Volume Displaced: 0.027 cu.ft. / 0.76 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: 6.6 lbs, 2.99 kg
Shipping Weight: 7.4 lbs, 3.36 kgs
Materials of Construction
Coil Construction: Aluminum voice coil
Coil Former: Polyimide former
Magnet Composition: Ferrite magnet
Core Details: Vented core
Basket Materials: Pressed steel basket
Cone Composition: Paper cone
Cone Edge Composition: Cloth cone edge
Dust Cap Composition: Solid composition paper dust cap