I have two 8 ohm cabinets (2x10 @ 160 watts; 1x15 @ 200 watts) and a head that will effectively drive either, but not both (160 watts @ 8 ohms, runs @ 4 and 8 ohms). I'm thinking about getting a used Crown power amp as opposed to a new head, since the head sounds good. The head would effectively be used only as a preamp. I looked through the archives but still have a couple of questions: Could a crossover be used in this set-up to biamp the two cabinets? If so, where in the chain? Would I use a Y cable to run the preamp line into the two channels of the power amp, or is there such a thing as a bridged input? As it stands, I'm thinking of simply running each cabinet off the two sides of the power amp, since there is not that much difference between their wattage ratings.