Posted by Mike Solms on May 21, 1999 at 08:32:35:
In Reply to: mouthpiece on a K tuba posted by Lola Rubistain on May 20, 1999 at 11:58:05:
The mouthpiece Yamaha ships with the 621 F is a Yamaha 67B4.
According to my Yamaha mouthpiece chart it has "no equivalent". A
Yamaha 67C4, however is said to be similar to a Mirafone C4. I think
we can conclude that the 67B4 is like a Mirafone C4 with a shallower
cup. For comparison purposes, this would make it a bit bigger than
a PT-64 and a bit smaller than a Dillon F1, which are both pretty
"standard" F tuba mouthpieces.