Hooked it up to Nikita's amp today on free air. Definitely the sub, DAMNIT. I don't understand. Coils read 2 ohms and there is no visible damage to the coil. No coil rub. Sounds good at low volume and then when the sub reaches a certain point of excursion you hear it and it sounds like it's bottoming out but it's FAR from bottoming out. We got a video I will post later.... I think it's recone time. FOOEY.