Well, last Sunday was the day I finally broke down and ordered a Behringer Feedback Destroyer to EQ my sub. According to UPS, it should be here when I get home from work tomorrow. So far, I've burned test tones to CD from 18Hz-120Hz, and created a chart to plot the measurements for before and after EQ. I've found a guy from Alabama (the best state) who posted a comprehensive setup guide at www.snapbug.ws Seems like everything one would need to get started. The only thing that I still need is a better correction chart for the Rat Shack SPL meter. I found one, but it skips frequencies too much, and you'd have to guess what values to add for the other frequencies. Anyone know where to get a better one? On the dude's web site, he says there is a compensation chart for Excel that automatically corrects when you enter values, but I don't have Excel on my home computer so...... Anyway, that's where I'm at right now. Just wanted to get this thread started so I could share my experience with the BFD. More to come............