There are tons of threads about La Scalas over at the Klipsch forums. From what I have read, SOME rooms do like the La Scalas in the rear facing position (with the tops facing forward, of course).....but, like the KHorns, I think placement is room dependant. Not just the dimensions, but also the construction, the flooring, furniture, listening position....and other things.
Kevin and I have been working on my LS cabinets a little, and I plan to start a thread on the rebuild probably this weekend or early next week. I have decided to go with the "doghouse mod" wherein I will build new enclosures for the mid and tweeter drivers, and will vent the additional space I will enclose, making them have a larger internal volume while porting them at the same time. From everything I have read, the LS were designed with too little volume, thereby limiting the lower extension to the low 50's. This mod supposedly changes that, providing bass into the 30's...WE WILL SEE....