I have a pair of CAOW1s that I normally use in a bedroom 2-channel system. I also have SongTowers and a SongCenter in my family room HT. Just for grins, I have tried the CAOW1s in my HT system instead of the SongTowers, and I can confirm that they work quite nicely with the SongCenter.
My CAOW1s have the CA15 woofer and the OW1 tweeter, and my SongCenter has the ER15 woofers and the OW2 tweeter. Those differences don't seem to matter, as the crossover designer is the same.
These are very good sounding speakers, and nogaro's price is good. Did you build them? They look good in your photos. I haven't looked at the prices recently, but your price is probably better than what it might cost to build them today.