I am new to this forum. I recently purchased my first polk audio set up and had a few questions. First let me start by saying I absolutely love my new speakers. I have what many would call a very modest set up, but it works great for me and my budget. Now let me tell you what I have. I have an lg 55lh40 lcd tv, an onkyo 608 receiver, two tsi200's as my fronts, a cs10 as my center, two tsi100's as surrounds, and two t15's as rears. As for subs, I have a psw125 and a psw110 stacked in a front corner running off of "y" splitter. My plan was originally to use two more tsi100's as rears, and another 125 sub, but I came across a killer deal on the t15's and the 110 that could not be passed up. I think it sounds good and was wondering if someone could give me some advice on two things, one, the crossover freq. I should set the speakers to individually, and, two, any advice on sub placement. I started with them in opposite front corners, but think I am getting better sound with them stacked. Any help would be appreciated. Like I said before, I am new to this. Upgraded from an onkyo htib, and wow, what a difference. Thanks in advance for any input.