So I feel so smart now. I've been having some trouble getting the volume and low end out of my pair of of Aggie GS112s. They sounded great solo, but I was actually losing low end when I ran them together. I didn't completely kick in as to what the problem was until I was playing them with an SWR SM400S in stereo mode. When I when all to one or the other, they sounded great, but again, with both I was losing a lot of sound. Everybody see where I'm going with this? SO I hauled out a 9V and did a polarity check on both of them. Yup. They were out. So I opened one of them up and swapped the leads to the 12" speaker. Polarity's great now and my amp sounds at least 3 times louder! Thanks laws of physics! Has this happend to anybody else whith speaker cabs?