| Model No. | Inner Rim Diam. (mm) | Rim Contour/ Thickness |
Cup Depth | Throat (mm) | Back- bore |
Playing Characteristics |
|---|---|---|---|---|---|---|
| 7A4-GP | 16.24 | semi-flat/ thick |
shallow | No. 27 3.65 |
narrow | Relatively small inner rim diameter, but still flexible. Perfect for piccolo or lead trumpet. |
| 8C4-GP | 16.19 | semi-flat/ standard |
standard | No. 27 3.65 |
semi- narrow |
Good for all around playing, including solos. Combines an extended high range with rich lows. |
| 11B4-GP | 16.46 | semi-flat/ standard |
semi- shallow |
No. 27 3.65 |
semi- narrow |
A somewhat shallow cup and medium rim for extra endurance. Brilliant tone. Suitable for D, E b , and piccolo trumpets. |
| 14A4a-GP | 16.68 | semi-flat/ semi-thick |
shallow | No. 27 3.65 |
semi- narrow |
Fast-response high range and powerful sound. Ideal for piccolo or lead trumpet. |
| 14B4-GP | 16.85 | semi-flat/ standard |
semi- shallow |
No. 27 3.65 |
semi- narrow |
Relatively large rim diameter and shallow cup. Outstanding overall balance for all musical genres. |
| 14C4-GP | 16.88 | semi-flat/ standard |
standard | No. 27 3.65 |
semi- narrow |
Rim designed for outstanding facility and flexibility. Popular in ensembles and orchestras. Can produce high volume. |
| 16C4-GP | 17.0 | semi-flat/ standard |
standard | No. 27 3.65 |
semi- narrow |
Large rim and medium cup for easy playability over a wide range. High volume. Excellent for symphony orchestra players. |
| 17C4-GP | 17.3 | semi-flat/ standard |
standard | No. 27 3.65 |
semi- narrow |
Deeper cup than the 17B4. Powerful, dark sound. A popular choice with symphony orchestra players. |