Posted April 13, 201213 yr i have 2 15" Sundown sa-15's in a 7 cuft box in a 1998 gmc jimmy. i'm running a hifonics hifi1500.1 amp. I've seen people with the same subs, same brand amp(but smaller) in very similar vehicles do much better hair tricks than i can achieve. Any suggestions on how to increase mine? I love to show off my subs and this is a fun way to do so!
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