After I bought my current head and cabinets I had a nice opportunity to do that. The guitarist I was playing with had a Fender Dual Showman head and a 2x12 cabinet and he could get insanely loud - and liked doing it to the point where I couldn't hear myself anymore.
The first time I brought my new (at the time) set up to his house to practice, his son sat in on drums. As usual he got louder over time, so I turned up a little louder, then he did, and our first legitimate volume war started. It didn't take long for his son to stop playing and throw his sticks down. We got so loud he was smashing the heads and cymbals but we literally heard NO sound from the drums.
It was fun for a few seconds to realize that I was no longer going to be drowned out and it actually did solve the volume problem from then on. However, we also realized that was pretty stupid. We were in a small room with a wood floor, one wall was a large window, and one was stone fireplace - IOW very live! If we kept it up we could have really done some damage to our hearing. Luckily it only lasted a short time - and as I said the positive result was that it was a permanent solution to the volume problem.