ok i just rethought what u said bout my subs trying to hit below my tuning freq. ok well let me explain. that cant be cuz i have played a new young jeezy song lots of times and it gets real low!!! without making that noise. ok but a song wil go fine threw the first beats then when it going to go over the same one it did it starts making that noise. so i turn it down. but i can get it low without making that noise to. so are u sure its going below teh tuning freq? cuz i mean not every song does this but mostly the ones when teh llows wil wana hit . but i have gottten it way lower its just when its loud. so idk. maybe your right after all. just checking , maybe its somethign else? its gotta be the box and tuning