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What are the rims like on the Steven Mead and Curry euphonium mouthpieces? I'm most interested in comparing the SM2 to the Curry 3M, 2M, and 1.5M. The SM2 had a rim width of 6.75mm, but I can't find any information as too if it's flat/round etc. There is nothing on the Curry website about the contour of it rims either...

I don't have access to these mouthpieces so I can't really see (and feel) for myself what they are like. The horn I'm using is a Yamaha 642. Any input would be appreciated.

Curry uses a flat, thin, bass trombone type rim. The SMs are wider but still flat.

I have a Curry 4D mouthpiece, which is deeper than the M cup you ask about. Although it did not work for me, these conical mouthpieces have potential for euphonium use.

The Curry 3D would be closer to the SM2 than the 3M.

Hope this helps.

John