The Genz-Benz Shuttle 6.0 is a head that weighs 3.75 pounds, and there is a dock for it on the G-B T12 speaker so they make a combo. Total weight of head and speaker is 36 pounds and with one T12 speaker the head is rated 375 Watts. There are a number of threads on TB about the Shuttle 3.0, 6.0 and 9.0 series.
I switched to this from a single 15" speaker and love it. It's the most power with the lightest weight you will find, so it can keep up with pretty much any band. The build quality and sound are superb. I don't know that I'd like to carry 36 pounds of combo plus a bass very far, but it would be easy to use a folding cart.
