Just wanted to add two thoughts which are semi-related to this thread:

1) If there was one "tweak" piece of equipment in the audiophile world that should be mandatory for every set-up, it's a SPL meter. For the $30 or so dollars for the Radio Shack analog version, you get one of the best and easiest set-up/calibration tools out there.

2) The most underrated piece of set-up/calibration equipment is your ears. If the measurements don't make sense, listen to the system and adjust. There are so many acoustical/physical impedments in the typical user listening room that the only tool you can truly trust is your ears. If it sounds good and you're not damaging the equipment, you're set.

Pythagore, I'm sorry that Outlaw equipment didn't work out in your system. I hope you have better luck with the Aragon. In the end, it's all about the music.