LI12D4 - Incriminator Audio 12" Dual 4-Ohm 600W RMS Lethal Injection Series Subwoofer LI12D4 - Incriminator Audio 12" Dual 4-Ohm 600W RMS Lethal Injection Series Subwoofer Outer Diameter: 12 3/8" Mounting Diameter: 11 1/8" Mounting Depth: 7" Displacement: .13 cu. ft.