ATCs are a bit tough to live with, but they may work well for you so long as you have a monster amp behind them. One of ATC's hang ups that I've noticed is that they need to be played a bit louder than usual to open up. In a big room, that may very well be a good thing.
For an amp for them, look at at least 200 wpc IMO. Bryston 4B comes to mind pretty quickly.
For an amp for them, look at at least 200 wpc IMO. Bryston 4B comes to mind pretty quickly.