That's an interesting one, Tom. I must confess I've never had a request to really crank things on an attended session, and even though my PMCs will go astonishingly loud for the size of box I'd be very reluctant to do so. Maybe that will change with my new room, which is quite a bit bigger than I've previously had.Do you have a client lounge where you could have an auxiliary loud system? At least then you wouldn't have to put up with the volume. Otherwise about the only other advice I can think of is 'don't do hip hop sessions'.On a different tack, how did you originally measure and set your 83dB? I'm thinking of investing in a sound level meter: I monitor at moderate levels which are probably in that region and have a marked volume control, but it would be good to measure and confirm.