Posted by Klaus on April 07, 2002 at 14:56:31:
In Reply to: Re: YAMAHA 621 5 valve? posted by Larry Zaidan on April 07, 2002 at 09:20:47:
An outsider not planning to take the Yamaha road, when it comes to tubas below the Bb tenor level, still might have a question to ask:
Do the three 621 versions, YFB, YCB, and YBB, have the same leadpipe?
Or do they each have their own rate of progression of bore through their leadpipes?