Posted by Mark Wiseman on January 24, 2001 at 15:37:28:
In Reply to: 7 Valve Tuba posted by Jay Bertolet on January 24, 2001 at 15:21:29:
I'm not sure I see how seven valves would eliminate intonation problems. Seven valves plus open would only give you eight notes that would have the correct length of tubing. The notes above or below those would still be subject to intonation problems.