JL Audio 12TW1-4

Continuous Power Handling (RMS) 300 W
Recommended Amplifier Power (RMS) 75 - 300 W
Nominal Impedance (Znom) 4 Ω 
Nominal Diameter 12.0 in / 300 mm
Overall Diameter (A) 12.375 in / 314 mm
Mounting Hole Diameter (B) 11.0625 in / 281 mm
Bolt Hole Circle Diameter (C) 11.7 in / 297 mm
Motor Outer Diameter (D) 5.71 in / 145 mm
Mounting Depth (E) 4.62 in / 117 mm
Front Grille Protrusion (F) 0.87 in / 22 mm
Driver Displacement 0.072 cu ft / 2.04 L
Net Weight 16.5 lb / 7.5 kg