I'm right now running a Carvin BR615, and for most gigs that I play it works great, but there's a possibility I'll be doing some outdoor gigs in the upcoming months, and want something to project a bit more. The LSx-1503 has really piqued my interest, but I'm wondering if anyone runs an LSx-1503A off of a preamp and how it sounds. Since I occasionally double on guitar, I'm considering going that route and a POD for the guitar, then run the LSx off the line out of my BR615. I'm aware that I won't get the full 600W out of the 615, since it'll be running at 4ohms, but was figuring on using that as a kickback in front of me with the 1503 on a stand behind me. Anyone run a similar setup, and how does it suit what you do? I play everything from funk/jam band to jazz standards. Thanks.