What exactly does a subsonic filter do, and do i need one for two 15 L7's in a ported box powered by hifonics Brutus???
97 V6 ATX 20,000 Miles
alpine cda 9811
Alpine MRV-F357
hifonics brutus BX2000D
2 Kicker L7 15
I NEED GREY LEATHER DOOR PANELS!!!!!!
Flip out monitor
PS2
Spr-175a
SPR-69LP
SPR-57LS
60 Ft EDEAD
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