I just finished building all the main speakers for my HT (Tempest F/L and Volt Coaxials for the surrounds/center). I love them! I'm now thinking of building a sub, and much of what I've read says that 2 subs are much better than 1. I've never run more than one sub before, so I have a couple noob questions, and I'm hoping I can get some advice. I'm more interested in SQ than volume, so I'm leaning toward a pair of 3 cu ft or 2 cu ft sealed subs (based on the flat packs available here). Do you agree that 2 subs are better than 1? Do the two subs run in stereo, or does the same signal go to both? How do I set this up? I'm also thinking of replacing my amp with an Emotiva setup (UMC-200 and UPA-700). The UMC-200 has 1 balanced and 1 unbalanced sub output. Do I use one for each sub? Is there a special amp I should buy that powers two subs from one signal? Any advice is much appreciated! Thanks!