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 925 Silver Trumpet
| Model No. | Inner Rim Diam. (mm) | Rim Contour/Thickness | Cup Depth | Throat (mm) | Back-bore | Playing Characteristics |
|---|---|---|---|---|---|---|
| 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. |
| 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, Eb, and piccolo trumpets. |
| 14A4a | 16.68 | semi-flat/ semi-thick | shallow | No. 273.65 | semi- 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. |
| 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. |
Specifications sourced from manufacturer published data. For corrections, please contact us.