SPECIFICATION

• Nominal Basket Diameter 8", 203.2 mm
• Nominal Impedance 4 ohms
• Power Rating Watts 20 W / Music Program N/A
• Resonance 143.55 Hz
• Usable Frequency Range 80 Hz - 4.6 kHz
• Sensitivity 96.1
• Magnet Weight 15 oz.
• Gap Height 0.25", 6.35 mm
• Voice Coil Diameter 1", 25.4 mm

THIELE & Small Parameters

• Resonant Frequency (fs) 143.55 Hz
• DC Resistance (Re) 3.64
• Coil Inductance (Le) 0.33 mH
• Mechanical Q (Qms) 18.78
• Electromagnetic Q (Qes) 0.92
• Total Q (Qts) 0.88
• Compliance Equivalent Volume (Vas) 9.62 liters / 0.34 cu. ft.
• Peak Diaphragm Displacement Volume (Vd) 36.70 cc
• Mechanical Compliance of Suspension (Cms) 0.13 mm/N
• BL Product (BL) 5.74 T-M
• Diaphragm Mass inc. Airload (Mms) 9.25 grams
• Efficiency Bandwidth Product (EBP) 155.79
• Maximum Linear Excursion (Xmax) 1.59 mm
• Surface Area of Cone (Sd) 230.9 cm²
• Maximum Mechanical Limit (Xlim) N/A

MOUNTING Information

• Recommended Enclosure Volume 
  Sealed Acceptable 
  Vented Acceptable
• Overall Diameter 8.24", 209.3 mm
• Baffle Hole Diameter 7.13", 181.1 mm
• Front Sealing Gasket fitted as standard
• Rear Sealing Gasket N/A
• Mounting Holes Diameter 0.22", 5.58 mm
• Mounting Holes B.C.D. 7.75", 193.85 mm
• Depth 3.06", 77.72 mm

MATERIALS of Construction

• Copper voice coil
• Polyimide former
• Ferrite magnet
• None-vented core
• Pressed steel basket
• Paper Cone
• Full paper cone
• Zurette dust cap