I have a jlaudio 10w6v2 sub in a custom sealed box and a jl audio 500/1 sub amp pushing it why do i get a poping sound when i turn it up from the sub only when the bass hits. It sounds good as long as i don't turn it up. I have not had this happen before so i am not sure what it is doing? Is it to much amp for the sub or not enough? any one with stereo experience please help me?

 

Your enclosure may be leaking air.