Detailed specifications for the Yamaha trumpet mouthpiece line. Compare cup depth, rim diameter, throat, backbore, and intended use across models.
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Yamaha Standard Trumpet
| Model No. | Inner Rim Diameter (mm) | Rim Contour/ Thickness | Cup Depth | Throat (mm) | Backbore | Playing Characteristics |
|---|---|---|---|---|---|---|
| 5A4 | 15.90 | semi-flat/ thick | shallow | No. 273.65 | narrow | Extremely small inner rim diameter. Flat and wide. Small cup volume. Ideal for lead trumpet. |
| 6A4a | 15.90 | semi-flat/ thick | shallow | No. 273.65 | narrow | Very shallow cup for easy high notes. Good for big-band type lead trumpet. |
| 7A4 | 16.24 | semi-flat/ thick | shallow | No. 273.65 | narrow | Relatively small inner rim diameter, but still flexible. Perfect for piccolo or lead trumpet. |
| 7B4 | 16.08 | semi-flat/ thick | semi-shallow | No. 263.72 | standard | Relatively large throat diameter with a sharp shoulder. bright sound with easy high notes. |
| 8C4 | 16.19 | semi-flat/ standard | standard | No. 273.65 | semi-narrow | Good for all-around playing, including solos. Combines an extended high range with rich lows. |
| 9C4 | 16.28 | semi-flat/ standard | standard | No. 273.65 | semi-narrow | Somewhere between the 8C4 and 11C4, affording easy playability over a wide range. Well-defined rim bite for easy blowing and extended endurance. |
| 11A4 | 16.46 | semi-flat/semi-thick | shallow | No. 273.65 | semi-narrow | Medium rim diameter with a shallow cup for easy high notes. Ideal for piccolo trumpet and jazz idioms. |
| 11A5 | 16.38 | semi-flat/thick | shallow | No. 273.65 | semi-wide | Designed for those who are not comfortable with the 14A4a. Wide rim shallow cup with a slightly large back bore delivers a rich upper range with ease. Well-suited for piccolo trumpet. |
| 11B4 | 16.46 | semi-flat/ standard | semi-shallow | No. 273.65 | semi-narrow | A somewhat shallow cup and medium rim for extra endurance. Brilliant tone. Suitable for D, E b , and piccolo trumpets |
| 11 | 16.32 | standard/ semi-thick | standard | No. 273.72 | standard | Relatively large throat with a sharp shoulder. Easy to play over the entire range, with a fairly bright sound. Good for beginners. |
| 11C4 | 16.46 | semi-flat/ standard | standard | No. 273.65 | semi-narrow | Clean bite and well-balanced rim for all-around playing. Standard model for beginners and advanced players. |
| 13A4a | 16.20 | semi-flat/ thick | shallow | No. 273.65 | narrow | Relatively flat rim with a shallow cup for fast response. Ideal for piccolo and lead trumpet. |
| 13B4 | 16.63 | semi-flat/ standard | semi-shallow | No. 273.65 | semi-narrow | Superb clarity for large ensembles and orchestras. Well-matched to C trumpets. Powerful sound. |
| 13C4 | 16.50 | semi-flat/ standard | standard | No. 273.65 | semi-narrow | Medium rim diameter and cup volume for all-around playing. Good for ensembles and orchestras. Fairly dark sound. |
| 13D4 | 16.68 | semi-flat/ standard | semi-deep | No. 273.65 | semi-narrow | Fairly deep cup with rich, mellow tone. A dark sound that is ideal for orchestra players. |
| 14A4a | 16.68 | semi-flat/ semi-thick | shallow | No. 273.65 | narrow | Fast-response high range and powerful sound. Ideal for piccolo or lead trumpet. |
| 14B4 | 16.85 | semi-flat/ standard | semi-shallow | No. 273.65 | semi-narrow | Relatively large rim diameter and shallow cup. Outstanding overall balance for all musical genres. |
| 14C4 | 16.88 | semi-flat/ standard | standard | No. 273.65 | semi-narrow | Rim designed for outstanding facility and flexibility. Popular in ensembles and orchestras. Can produce high volume. |
| 14D4 | 16.80 | semi-flat/ standard | semi-deep | No. 273.65 | semi-narrow | A fairly deep cup with a medium rim. Rich, somewhat dark tone. Well suited to orchestral playing. |
| 14E4 | 16.84 | semi-flat/ semi-thick | deep | No. 243.88 | wide | The 14B4 rim with a unique cup for a soft tone. For rotary trumpets. Large backbore and throat. |
| 15B4 | 16.96 | semi-flat/ standard | semi-shallow | No. 273.65 | semi-narrow | Fairly large rim diameter with a shallower cup than the 15C4. Outstanding flexibility. Suits Bb , C, D, and Eb trumpets. |
| 15C4 | 16.98 | semi-flat/ standard | standard | No. 273.65 | semi-narrow | Clean rim bite with a standard U-shaped cup. Bright, powerful tone. For advanced players. |
| 15E4 | 16.92 | semi-flat/ semi-thick | deep | No. 243.88 | wide | Rim designed for outstanding facility and flexibility. For rotary trumpets. Between the 14E4 and 16E4 in size. |
| 16C4 | 17.00 | semi-flat/ standard | standard | No. 273.65 | semi-narrow | Large rim and medium cup for easy playability over a wide range. High volume. Excellent for symphony orchestra players. |
| 16D | 17.14 | standard/ standard | semi-deep | No. 273.65 | semi-narrow | A deeper cup than the 16C4. Soft tone. Mellow-but-solid sound that is ideal for orchestras. |
| 16E4 | 17.14 | semi-flat/ semi-thick | deep | No. 243.88 | wide | The 16C4 rim with a unique deep cup. Heavy tone. For rotary trumpets. Maximum inner rim diameter. |
| 17B4 | 17.30 | semi-flat/ standard | semi-shallow | No. 273.65 | semi-narrow | A good combination of large rim and relatively shallow cup. Powerful sound. A good choice for orchestra first-chair players. |
| 17C4 | 17.30 | semi-flat/ standard | standard | No. 273.65 | semi-narrow | Deeper cup than the 17B4. Powerful, dark sound. A popular choice with symphony orchestra players. |
| 17D4 | 17.30 | semi-flat/ standard | semi-deep | No. 273.65 | semi-narrow | An even deeper cup than the 17C4 for an exceptionally dark, heavy tone. Good for symphony orchestra players who prefer a mellow sound. |
| 18C4 | 17.42 | semi-flat/ standard | standard | No. 273.65 | semi-narrow | High volume with an exceptionally large inner rim diameter and deep cup. For advanced orchestra players. |
Specifications sourced from manufacturer published data. For corrections, please contact us.