If the subwoofer plays 1 thing well, it will play everything else thing well. The rest is just personal preference. The Source material is the same thing, it's frequencies from (input subwoofer's depth) - (where you have your subwoofer crossed over), plus a given amplitude (how loud it is). If you happen to like your music with emphasis in one area, and your HT flat, or whatever, you should EQ it so, using a flat, low distortion, low power compression subwoofer. Unless you buy a port-tunable subwoofer, that has 2 tunings that fit your preference.
Seems easier to just EQ it.
SheepStar