Neither of them are it; but the second one is a little closer. It looks very similar in design to a Cactus Sounds MK 1 18" sub based on pure appearance. The vented back plate on mine is flat, but otherwise, they're very VISUALLY similar. 3" vc, dual spiders, and dual 4ohm vc. I just want to go to dual 2ohm coils on it basically.