Just curious as to how many people actually mix speakers (by choice) in a 4x12 configuration? If you do...how do you mix them? X pattern? Top and bottom? Good idea? Bad idea? I know my Avatar 2x12 cab had a Vintage 30 and a G12H30 in it and sounded good. I'm debating on a 4x12 cab and might want to mix Budda Phatman speakers with english Vintage 30's.