• Nominal Diameter 12", 300 mm
• Overall Diameter 12.44", 316 mm
• Bolt Circle Diameter 11.75", 298.5 mm
• Baffle Cutout Diameter 11.75", 282 mm
• Depth 5.31", 135 mm
• Flange and Gasket Thickness 0.47", 12 mm

• Minimum Impedance 6.7 Ohm
• Nominal Impedance 8 Ohm
• Nominal Power Handling*** 300 W
• Maximum Power Handling**** 600 W
• Sensitivity (1W/1m) 99 dB
• Frequency Range 50 - 5000 Hz
• Voice Coil Diameter 2.5", 65 mm
• Winding Material Aluminium
• Former Material Glass Fiber
• Winding Depth 0.49", 12.5 mm
• Magnetic Gap Depth 0.31", 8 mm
• Flux Density 1.05 T

• Resonant Frequency (fs) 61 Hz
• DC Resistance (Re) 5.4 Ohm
• BL Product (BL) 14 N/A
• Diaphragm Mass inc. Airload (Mms) 46.9 grams
• Mechanical Compliance of Suspension (Cms) 0.14 mm/N
• Rms 0.87 Kg/s
• Electromagnetic Q (Qes) 0.52
• Mechanical Q (Qms) 20.5
• Total Q (Qts) 0.5
• Compliance Equivalent Volume (Vas) 2.01 ft³, 56.87 dm³
• Surface Area of Cone (Sd) 81.5"², 526 cm²
• Maximum Linear Excursion (Xmax)* 4.92 mm
• Xdamage** 15.25 mm
• Coil Inductance (Le) 0.61 mH
• Diaphragm mass (Mmd) 40.1 g
• Eta Zero 2.37 %

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