I used to have a set of JBL 4715a subs to make a long story short I'm making another set. My wife said what are you out of your f*ckin mind. I've got 4 15 Inch jbl speakers and I'm pretty handy at building things so why not. I built them to the same specks as the original ones, I already have a set of SR 4738 they both are the same size. I just love to hear and feel that slug hammer smack in the chest bass. Just one more thing I can cross off my buckit list. When I get them done i'll show you all the end product
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