Detailed specifications for the Bach trombone mouthpiece line. Compare cup depth, rim diameter, throat, backbore, and intended use across models.
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Bach Standard Trombone, Small Shank
| Model No. | Depth of Cup | Approx. Cup Dia. | Rim Shape | Description |
|---|---|---|---|---|
| 3 | Medium deep | 26.26mm | Medium wide, well rounded. | Extra-large cup for players with a robust embourchure. |
| 4 | Medium | 26.00mm | Medium wide, well rounded. | Very large cup; principally used by players having a healthy, strong embouchure. |
| 4C | Medium shallow | 25.75mm | Medium wide, well rounded. | Large cup with a brilliant tone. Requires a powerful natural embouchure. |
| 5 | Medium | 25.50mm | Medium wide, semi flat. | For players with a good, natural embouchure. Rather large cup. Produces a full, mellow, sonorous tone. |
| 5G | Deep | 25.50mm | Medium wide, semi-flat | Same as No. 5 except for throat and backbore. (Same as 5G only with small shank.) |
| 5GB | Deep | 25.50mm | Medium thin, very well-rounded | Same as No. 5G except for rim. (Same as 5G only with small shank.) |
| 5GS | Medium | 25.50mm | Medium wide, semi-flat. | Same as No. 5 but with larger G throat and 420 backbore. |
| 6 | Medium | 25.50mm | Medium wide, well rounded. | Fairly large cup. For players with a strong embouchure. Full, solid, mellow tone. |
| 6 1/2A | Medium deep | 25.40mm | Medium wide, well rounded. | Slightly larger than medium with standard-size throat and backbore. Rich, compact tone of large volume. |
| 6 1/2AL | Medium deep | 25.40mm | Medium wide, well rounded. | The same rim and cup as No. 6 1/2A, but with a larger "G" throat and 420 backbore for trombonists who strive for a Teutonic tone quality. Recommended for euphonium players who desire a round, mellow tone of great carrying power and substantial volume. |
| 6 1/2AM | Medium deep | 25.40mm | Medium wide, well rounded. | Symphony model tenor trombone mouthpiece features same cup and rim as 6 1/2A, but with symphony "F" throat and 413 backbore. |
| 6 3/4C | Medium shallow | 25.00mm | Medium wide, well rounded. | Produces a full, clear, rather brilliant timbre. For trombonists with a good, well-trained embouchure. |
| 7 | Medium | 24.75mm | Medium wide, not too sharp. | The ideal mouthpiece for the artist desiring a beautiful, ringing tone with sufficient volume for melody playing. |
| 7C | Medium shallow | 24.75mm | Medium wide, not too sharp. | Designed for players who prefer a medium-large cup to assure a large volume of tone. The rather shallow cup produces great brilliancy. |
| 8 | Medium | 24.75mm | Slightly wide and flat. | Corresponds in cup design with No. 7, but with a wider rim. Players with heavier lips prefer this model. |
| 8 1/2W | Medium shallow | 24.75mm | Very wide, well rounded. | For players with heavy lips who need support to prevent the rim from digging. Well liked by musicians who do strenuous work. Produces lively brilliant tone with easy high register. |
| 9 | Medium deep | 24.72mm | Medium wide | Possesses a beautiful, rich, rather mellow timbre. |
| 11 | Medium deep | 24.70mm | Medium wide | Same style as No. 9 but slightly smaller. Produces a magnificent round tone of great carrying power. An excellent model for euphonium and baritone players. |
| 11C | Medium shallow | 24.70mm | Medium wide | Same size as No. 11 but with a medium-shallow cup for brilliant ringing tone of large volume. |
| 12 | Medium | 24.50mm | Medium wide | An excellent all-around mouthpiece. Combines a fine, solid dark tone, excellent flexibility, great volume and easy response. |
| 12C | Medium shallow | 24.50mm | Medium wide | Same size and rim as No. 12 but with a more brilliant, crisp tone. The best selling model for all-around playing. |
| 12E | Very shallow | 24.50mm | Medium wide | This model, designed principally for Eb alto trombone, can be used on Bb trombone or bass trumpet when a brilliant, brassy tone is desirable. Alo recommended for use in the extreme high register. |
| 14D | Shallow | 24.50mm | Medium wide | Well suited for playing in the high register. Very effective for coloratura work. |
| 14 1/2D | Shallow | 24.50mm | Medium wide | Small, shallow cup and wider rim aid the high register while producing a clear, lively tone. |
| 15 | Medium deep | 24.40mm | Medium wide | A full-toned mouthpiece of mellow timbre. |
| 15C | Medium shallow | 24.40mm | Medium wide | Medium shallow cup produces a clear, lively tone. Players with thin lips or a weak embouchure will find it helpful. |
| 15CW | Medium shallow | 24.40mm | Very wide, well rounded. | Designed for great brilliancy and resistance to facilitate the very high tones. The wide cushion rim distributes pressure, an advantage to players with soft, fleshy lips. |
| 15D | Shallow | 24.40mm | Medium wide | Has a rim similar to No. 15C but the shallower cup produces a clear, crisp tone, effective in the extreme high register. |
| 15E | Very shallow | 24.40mm | Medium wide | Designed for Eb alto trombone but used also by players who continually play in the extreme high register. Also used for bass trumpet where a martial tone quality is desired. |
| 15EW | Very shallow | 24.30mm | Extra-wide cushion rounded. | The choice of artists who play in the extreme high register for long hours. Produces a brilliant, piercing tone. |
| 17 | Medium | 24.20m | Medium wide | A rather small mouthpiece for all-around work by players with a small mouth or weak lips. Produces a mellow tone. |
| 17C | Medium shallow | 24.20mm | Medium wide | Produces a clear, brilliant tone; requires little effort to play. Good for players with a small mouth and weak lips. |
| 17D | Shallow | 24.20mm | Medium wide | For trombone players who play continually in the high register and need a brilliant tone with much resistance. |
| 18 | Medium | 24.20mm | Fairly wide flat | Same cup as No. 17 but with a wider, flatter rim. |
| 18C | Medium shallow | 24.20mm | Fairly wide, flat. | The same cup diameter as No. 18 but slightly shallower, producing a brighter, crisper tone. |
| 18D | Shallow | 24.20mm | Fairly wide, well rounded | Playing results are similar to No. 17D but with a wider, more rounded rim. |
| 19 | Medium deep | 24.00mm | Medium wide, fairly flat. V-shaped cup | Primarily designed for a rather mellow, velvety tone. |
| 22 | Medium | 23.92mm | Medium wide | This small mouthpiece is used by players of the English or Italian school, and for tenor horn and very small bore trombones. |
| 22C | Medium shallow | 23.92mm | Medium wide | The small and shallow cup is well suited for bass trumpet but is also used on the small bore valve trombones popular in some Latin countries. |
| 22D | Shallow | 23.92mm | Medium wide, slightly rounded. | This model was originally designed for bass trumpet which requires a brilliant, penetrating tone of martial character. |
Specifications sourced from manufacturer published data. For corrections, please contact us.