I'm running into my 1515/66/1 and I love the cab.. The only thing is that it's hard to carry the thing down a flight of stairs and nearly impossible to do so by myself.. That being said, i'm looking at splitting the cab into a 15/6/1 and a 15/6 and have one of the cabs flipped so when I stack them vertically the 6's are right next to each other. I'm hesitant because it's obviously going to cost more money to get the material together etc. Also, doing this take the 6's farther away from my ear and closer to my "Crotchal" region. Suggestions? Insight?