I have a used JL 10W7 subwoofer and a used JL 500/1 monoblock amp for sale, I've had them for about two years now and they work GREAT. There's some minor wear and tear on the outside edge of the sub but they're cosmetic only, does NOT effect the sound performance whatsoever. Prefer to sell these together since they're made for each other:thumbsup: Asking $550 + shipping OBO.