Have played for about 10 years with this setup: Bag End 410, BE 15, Stewart WT 2.1, Alembic FX-1 pre-amp. Great sound & zero technical problems. I had always hoped to replace the 15 with a BE-18/Infra processor someday but it has become cost prohibitive. After trying my 410 with a friend's Peavey 18" sub, I was way impressed with the low end--- deep, smooth, solid as a rock-- although above mids there was a drop in volume. My question--- has anybody used the Peavey SP118 in their setup. Good? Bad? I will definitely play thru it before I buy but it seems like a relatively inexpensive alternative to the Bag End 18/Infra. Thanks.