• Nominal Diameter 3", 80 mm
• Overall Diameter 4.16/3.19", 105.6/81 mm
• Bolt Circle Diameter 3.62", 92 mm
• Baffle Cutout Diameter 2.91", 74 mm
• Depth 2.15", 54.5 mm
• Flange and Gasket Thickness 0.25", 6.5 mm

• Minimum Impedance 7 Ohm
• Nominal Impedance 8 Ohm
• Nominal Power Handling*** 20 W
• Maximum Power Handling**** 40 W
• Sensitivity (1W/1m) 91 dB
• Frequency Range 100 - 20,000 Hz
• Voice Coil Diameter 0.75", 19 mm
• Winding Material Aluminium
• Former Material Kapton
• Winding Depth 0.2", 5 mm
• Magnetic Gap Depth 0.16", 4 mm
• Flux Density 1.5 T

• Resonant Frequency (fs) 110 Hz
• DC Resistance (Re) 6.2 Ohm
• BL Product (BL) 3.6 N/A
• Diaphragm Mass inc. Airload (Mms) 2.4 grams
• Mechanical Compliance of Suspension (Cms) 0.67 mm/N
• Rms 0.4 Kg/s
• Electromagnetic Q (Qes) 0.9
• Mechanical Q (Qms) 4.7
• Total Q (Qts) 0.7
• Compliance Equivalent Volume (Vas) 0.03 ft³, 0.8 dm³
• Surface Area of Cone (Sd) 4.56"², 29.4 cm²
• Maximum Linear Excursion (Xmax)* 1.83 mm
• Xdamage** 7.9 mm
• Coil Inductance (Le) 0.07 mH
• Diaphragm mass (Mmd) 2.3 g
• Eta Zero 0.18 %

Notes

• *Xmax = [(winding depth - magnetic gap depth) / 2] + (magnetic gap depth / 3)
• **Maximum excursion before permanent damage
• ***2 Hours Test According to AES 2-1984 Rev. 2003
• ****Maximum power is defined as 3dB greater than nominal power