This isn't a question, it's just a heads up for IRU users. When doing a "True Stereo" sweep, the audition impulse function does not use all 4 channels when auditioning, even though it is clearly set to do so. I have to turn off 2 channels to hear the other 2. I have only been able to hear the results once the preset has been made and I check it out in SD. It's kind of annoying. I am going to send a note to Apple as well as this post.
Dual 2gHz G5, Mac OS X (10.4.8), 4Gig Ram, Metric Halo ULN-2