Posted by Chuck(G) on September 18, 2001 at 10:12:09:
In Reply to: Re: Re: Re: Thayers on tubas.... posted by Klaus on September 17, 2001 at 22:36:30:
If I were going to take a trombone-type valve and adapt it for tuba use, it would probably be a Greenhoe unit, as this looks to be the most practical. See link below: