I guess what I'm trying to get at is, the svs ultras would make a great choice for a 2.0 system, but is kind of unnecessary and may complicate things when adding subs for music system... When I was building my 2.2 here is what I found, the towers when played full range uncrossed sounded good by themselves, then when I added the sub, there was more bass, but it didn't sound as clear and there was obviously something wrong about the sound... So I took the subs away and the sound cleaned up, then I tried lowering the subs crossover to its lowest setting, this helped, but also almost cut the subs duty down to nothing.. Then after advice from this board, I crossed the towers at 80 and pulled the sub in at 75, this made a huge difference, what happened was really noticable, first the towers amplifier was hardly working {since its not making power for the lows} which I think contributed to making it much more airy and to add to it the bass was instantly cleaned up, honestly no matter where I put the subs the bass seems to melt together with the towers seemlessly. I have since tweaked the crossovers and made some placement changes for what I feel is as good as it gets... Now here's the thing, them ultras are made to have great bass, my only concern is that by adding dual subs you are going to have to cross out that bass Pthat you are paying for} to make it sound good, so why not spend that money on a speaker made for 80+hz, and then get some musical sealed subs to handle the sub80 material???
IMO, you can get some powerful bookshelf speakers and some decent subs and get better sound than towers and subs, I had evo10 bookshelfs running in my 2.2 for a couple days while I was trying them out and it sounded great {I kept the towers because the bookshelfs are for my 3.1 ht system, but it sounded just as good if not better}... Ill bet a pair of sierra1 bookshelfs with either 2-xpa100's or a single xpa2 and a pair of hsu ULS15's will cost you half the money and sound better... Now Im not sure how shipping would work but, I would imagine it is doable...
PS-Im not saying you won't be happy with the Ultras, just not a huge amount of people around that heard them, and if you are really set on them, I would call svs and see which sub they recommend them with buy one of theirs that they already tested them with... May get better results... Also, you may like how they sound left alone uncrossed, my brother crossed his towers and then changed them back, he said he likes the sound of all the bass together, but I don't...
