Bach Contrabass Trombone Mouthpiece
Model No. Approx. Cup Dia. Rim Shape Description
30CB 30.00mm Medium Wide Designed specifically for contra-bass trombones. Produces a full, rich sound.

Bach Tuba & Sousaphone Standard Mouthpiece

With the exception of the "junior" mouthpieces, Nos. 30E and 32E, Bach tuba mouthpieces can be used equally well on BBb and Eb tuba. There is no good reason for making mouthpieces for Eb tuba any smaller or shallower because a player using an Eb tuba actually transposes a fourth and uses the instrument in the lower register, for which a larger-sized mouthpiece is to be given preference. Models 7, 12, 24W and 24AW have larger backbores.
Model No. Depth of Cup Approx. Cup Dia. Rim Shape Description
7 Medium 33.25mm Medium Wide A large mouthpiece with full, lively tone and a splendid low register, for players with a strong embouchure. Recommended for large-bore instruments.
12 Medium 32.75mm Medium Wide Fairly large diameter, producing a big, vivid tone.
18 Medium 32.10mm Medium wide Our best selling mouthpiece for all-around work. Has an even register and substantial tone of excellent carrying power.
22 Medium

31.60mm

 Medium wide Slightly smaller than No. 18. Recommended for use in school bands.
24W Medium 31.25mm Wide, well rounded. A versatile mouthpiece with lively tone, suitable for school bands.
24AW Deep 31.25mm Wide, well rounded. An excellent mouthpiece whenever a sonorous, dark tone quality of enormous volume is desirable.
25 Medium 30.60mm Medium wide A fairly small mouthpiece suitable for young students.
30E Medium shallow 30.00mm Medium wide A small mouthpiece requiring little volume of air. For the young student with a small mouth.
32E Medium shallow 29.50mm Medium wide A small mouthpiece for the lightweight bass horn, or for the less robust player seeking a robust tone.

Bach Megatone Tuba/Sousaphone Mouthpieces

Model No. Depth of Cup Approx. Cup Dia. Rim Shape Description
7 Medium 33.25mm Medium wide A large mouthpiece with full, lively tone and a splendid low register, for players with a strong embouchure. Recommended for large-bore instruments.
12 Medium 32.75mm Medium wide Fairly large diameter, producing a big, vivid tone.
18 Medium 32.10mm Medium wide Our best selling mouthpiece for all-around work. Has an even register and substantial tone of excellent carrying power.
22 Medium 31.60mm Medium wide Slightly smaller than No. 18. Recommended for use in school bands.
24AW Deep 31.25mm Wide, well-rounded An excellent mouthpiece whenever a sonorous, dark tone quality of enormous volume is desirable.