Just was thinking about the pads used for stage/amp/cab decoupling I think they are called gamma pads or something. I was remembering back to when I used to compete in car stereo contest when I was alot younger. We couldn't afford all of the high dollar sound dampening material like dynomat. we would take tennis balls and screw them to the bottom of the subwoofer boxes to decouple them from the car, that way the subwoofer box was only coupled to the car via straps to keep it held in place. It made a huge improvement. I think I'll try this on my cab. It should take no more than probably 5 tennis balls and screws and a little black spray paint (don't like yellow) to make things work. Probably what about ten bucks total. and if you whant to couple the cab to the stage for more bottom then just slide some pvc over the tennis balls for feet, painted black of course. A little redneck but it worked 20 years ago, It should work now.