put pics of your sub install it might help too also if your sub requires a certain cubic ft add .5cubic ft extra i find it makes it louder

also is it only 1 sub???? and what size is it??

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Big box installer (Timmins)
02 GRAND CARAVAN SPORT
I change my mind like i change my underwear lol

new system coming.
-CD7200MKII
-new alternator 160amps
-sound deadning

need new subs and a bigger amp. saving up for it.