Yamaha 52

[cognitofalcon]

Wondering how it compares to a Bach 4G or 5G. Is the cup depth comparable? I want to buy one for marching.

[Trombo]

Yamaha 52 (25,72 mm) in-between Bach 5g (25,55 mm) and Bach 4G (26 mm). But 5G and 4G is deeper than the Yamaha 52.

[iiipopes]

And noting Bach's inconsistency through the years, the actual cup I.D. on any particular Bach mouthpiece has a good chance of being larger than the "spec." I have found this to be true across the board, from trumpet to tuba. The cup diameter of my 6 1/2 AL is as large as any "5" series mouthpiece by Bach or clones.

[cognitofalcon]

Well in that case, I think I'll go with their 51D in small shank. I know it has a deep cup.