I'm in the process of rebuilding mine to a pair of Theater 3's for HT use. From the test runs, they walk all over the Polks that I've been using, but a few steps down from the two channel setup. Stupid cr@ppy Sony reciever! For surrounds, I've got my beloved PI Ones. For Center, I'm using a speaker I picked up from a local shop, but I think a PI One would be a great choice. Resize it to 14Hx16Wx8D and you can fit the two drivers on top of each other on the front baffle.Alternatively, being a big fan of the PI Ones, I think five of these plus a sub would make a pretty awesome HT speaker system.
Gar.