Posted by tuba-lew on August 28, 2000 at 20:31:28:
In Reply to: Re: Re: Compensating system. posted by Bill on August 28, 2000 at 19:23:28:
I played a Besson 3-valve compensating tuba about 25 years ago and it was explained to me that the compensating system had extra tubing that came into effect when the 1-3 valve combination was used to bring it down into tune. Since there wasn't a 4th valve, it had nothing to do with adding tubing to compensate for 4th valve combinations. I do remember it being a great playing horn.