Kinda. I wanted to do something similar with my Ampeg 810, but it's too shallow front-to-back to be stable with casters attached directly to the bottom of the cab. I ended up buying one of
these and bolting it to the bottom of the cab. (Obviously you have to be okay with drilling holes in the bottom of your cab.)
That dolly board is deep enough that you can slide the cab back some to offset the cab being front-heavy. In my case, the cab sits 3 or 4 inches back from the front edge of the dolly to get the weight distributed right. The original tilt-back casters actually hang off the back edge of the dolly board an inch or so, but it balances perfectly there and is totally stable. Not the least bit wobbly.
You'd be amazed at how much easier it is to move the fridge around, and load-ins and load-outs are simple. I can seriously roll it around with one hand, and getting through narrow doorways, etc. is a piece of cake. No one who's moved it could believe they never thought of doing something similar.
