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BETA-8CX
SPECIFICATION
Nominal Basket Diameter 8", 203.2mm
Nominal Impedance* 8 ohms
Power Rating
Watts 250W
Music Program 500W
Resonance 63Hz
Usable Frequency Range 74Hz-20kHz with APT-50 Horn Driver
Sensitivity*** 93.3
Magnet Weight 38 oz.
Gap Height 0.313", 7.94mm
Voice Coil Diameter 2", 50.8mm

THIELE & SMALL PARAMETERS
Resonant Frequency (fs) 63Hz
DC Resistance (Re) 5.6
Coil Inductance (Le) 0.85mH
Mechanical Q (Qms) 8.82
Electromagnetic Q (Qes) 0.34
Total Q (Qts) 0.33
Compliance Equivalent Volume (Vas) 19.99 liters / .71 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 67.20cc
Mechanical Compliance of Suspension (Cms) 0.32mm/N
BL Product (BL) 11.1 T-M
Diaphram Mass inc. Airload (Mms) 18.3 grams
Efficiency Bandwidth Product (EBP) 193.1
Maximum Linear Excursion (Xmax) 3.2mm
Surface Area of Cone (Sd) 210.0 cm2
Maximum Mechanical Limit (Xlim) 6.9mm

MOUNTING INFORMATION
Recommended Enclosure
Sealed 3-10 liters/ 0.1-0.4 cu.ft.
Vented 8-21 liters/0.3-0.8 cu.ft.
Overall Diameter 8.24", 209.3mm
Baffle Hole Diameter 7.13", 181.1mm
Front Sealing Gasket Fitted as standard
Rear Sealing Gasket Fitted as standard
Mounting Holes Diameter 0.22", 5.6mm
Mounting Holes B.C. D. 7.75", 196.9mm
Depth 3.5", 88.9mm
Net Weight 6.8 lbs., 3.1 kg
Shipping Weight 7.5 lbs., 3.4 kg

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 Treated Paper Cone
Cone Edge Composition Sealed Cloth cone edge
Dustcap Composition Zurette dust cap

*APT-50 horn driver sold separately.