Posted by Chuck on January 08, 2004 at 10:25:39:
In Reply to: Yoda Self Tuba Question posted by Steve Inman on December 28, 2003 at 20:42:48:
that slide is definitely a valve slide, and I think it is the 4th as you speculate. It's not a main tuning slide. This tuba is actually quite a lot different from the production model of the YFB-822. It is lighter weight and plays with a brighter, livelier sound than the production model, and some of the valve tubing is wrapped differently (the 4th especially). This photo was taken before he had the tuning mechanism mounted to the main tuning slide.
Long story short, ya, it's a valve slide, not the main tuning slide.