I have a TC Sounds 12inch Revo prototype. Dual 1 inch slug TC9 motor, 3inch coils(dual 3ohm dcr), dual 10inch spiders, aluminum cone, rubber surround. Specs are the exact same as an Audiopulse/TC Sounds Revo 12. $250 shipped to the lower 48. The only difference between the Revo and this sub is the basket color is silver/gray, the cone is silver aluminum, not black.