Wayne, the wife has been cool with the ever growing collection of Pi speakers around the house but the tower 2's really are a little large for rear surrounds so I've been thinking... If I built a cabinet 36" tall with the same volume as the smaller pi 2 and used a psd 2002 tweeter to match the theater 4's we might both be happy. What would I need to do to the crossover to change tweeters? Would the box tuning need to be changed since the speakers will be right up against the rear wall? BTW, I did get a little crown amp and it really woke up the theater 4's. The fan is noisy, but I don't even notice it after I put the amp in my entertainment center. I'm saving up for some JBL's now.