Medium deep cup depth
25.40 mm cup diameter
Medium wide, well-rounded rim
Requires a well-developed embouchure
Features fine Bach craftsmanship. The same cup, throat, and backbore as No. 6 1/2AL small shank tenor trombone but with Deepa bass shank softer outer edge, quick respons
Model No. / Depth of Cup / Approx. Cup Dia. / Rim Shape / Throat / Backbore / Description 1G / Deep / 28.00 mm
Among the largest and most powerful bass trombone mouthpieces produced today. 1-1/4G / Deep / 27.50 mm / Medium thin, well rounded.
0.276″ / 429 / Cup diameter is smaller than No.1G, but still very large and deep, with the sonority preferred by the modern American school. 1 – 1/4
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