Ok, I need some input. I built a sealed 75lt DPL12 last Feb. It has been working great, but I would like to make, it or something else, better. My goal, to get cleaner lower base. I have a couple of thoughts. Either an infinite baffle with at least two tempest, a phoenix type dipole using two dpl12 (http://sho.mystarband.net/BBContent/BBBass.html) or a push pull type transmission line (http://www.teresaudio.com/haven/subs/subs.html) Any thoughts, I am leaning towards the dipole of tl because I already have one DPL12. But, I do have a perfect location for an infinite baffle too. I don’t have a sub EQ yet so, can one of these run relatively well without one.