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Since I bought my new tuba, I have been farting around with mouthpieces. Current wisdom says that a mouthpiece should go in 3 cm (1.18"). Currently, I am playing 2 tubas mostly. This is the result of TODAY'S test:

Mouthpiece YamaYork Wessex ‘Presence’
Mirafone TU33 1 1/2” 1 1/2”
30H (US) 1 7/16” 1 5/16”
32C (Eu) 1 1/16” 15/16”
(while I didn’t try it for this experiment, I am ASSUMING the 32B will fit the same)
Hammond 31LB 1 1/4” 1 1/16”

When I worked with Doug Elliott, he told me the mouthpiece should go in 1", EXACTLY.

Like I told Jerome Stover, in MY day, we just jammed the mouthpiece in and practiced!

Waddya think?

Interesting. I've wondered about this in terms of what's the most appropriate. I haven't wondered deeply enough to do any research or measurements until now, though. I've just been jamming it in and practicing.

For the record, though, my main mouthpiece goes into my only horn 1 1/16".

What does it all MEAN?