if the sub is in the proper box and it as well as the amp r wired correctly it should shake the hell out of a civic..... ported box will be louder sealed box will be cleaner and a lil more punchy
if the sub is in the proper box and it as well as the amp r wired correctly it should shake the hell out of a civic..... ported box will be louder sealed box will be cleaner and a lil more punchy