I listen mostly to R&B,rap and jazz. I would like for it to be sq and spl.Its driven by a PG 200.4. Its in a seal box now(JL spec :sounds great),but I would like to have both sealed and ported to see difference and plus after building my first box,Its kind of fun.Should I just use JL's specs.I thought about ML plans because it seems like everybody says TUNE LOW.