The REL's contain explicit instructions for connecting to your system, basically you take their proprietary cable with three colored wires at the amp end and hook the red and black to your right channel + and - and then the yellow to your left channel + and the sub takes the exact same signal that is going to your speakers for effortless blending and matching. The REL is absolutely fantastic, I just bought a tiny 15" cube, the REL Q201E, and cannot believe how tuneful, rich, and musical the bass and midrange now sound w/my tiny Mirage monitors. I cannot overestimate the difference a REL, any model, will make in your system. --Sarah
