I had a 500/1 from my M3 that I had used but the thing was turned way down and was really a waste to use a 500 on this box. I'd suggest getting a 250/1 or getting a 500/5 and using that for it. You don't need a ton of power for this sub, it's not like a w7. That said, I'm only in Derry, NH and will be around if you'd like to come up.