Posted by Barry Guerrero on August 29, 2001 at 10:28:34:
In Reply to: Compensating Tuba Question posted by Rocky Bivens on August 29, 2001 at 08:49:26:
Easy: long, heavy piston valves, with unidentified extra bits of tubing coming out of them (usually on the back side). If the low E (all three valves) seems really well in tune, then it's probably a compensating system.
Barry Guerrero