I've read a couple threads about .5 alignment of speakers using multiple woofers, and also several threads describing the square 2x2 arrangement of the common 410 bass cab and 412 guitar cab as basically the worst designs possible (from an acoustical perspective, at least). I didn't want to "put lipstick on a pig" but I've had a pair of 410 cabs since 1999 and they have always gotten the job done for me, but I've definitely noticed big changes in tone depending on where I stand in relation to my stack. So, I did a bit of reading, and the .5 alignment could be accomplished by adding an inductor in series with the + lead on the woofer(s) in question -- which prompted me to order a pair of solid-core inductors to set an LPF point of approximately 450 Hz. After I had "converted" the first cab; I did a side-by-side comparison with the other 410 and heard a lot more clarity and detail -- it cleaned things up a lot. So I proceeded to mod the second cab and the effect is even more pronounced when they are stacked. I felt like I was hearing the winding on my strings. For $30 in parts and a couple hours of my time, it seems like a great bargain, and it's completely reversible if the result doesn't turn out to be helpful at gigs.