Yamaha Trombone, Small Shank
| Model No. |
Inner Rim Diameter (mm) |
Rim Contour/
Thickness |
Cup Depth |
Throat (mm) |
Backbore |
Playing Characteristics |
| 45A |
24.26 |
standard/
standard |
shallow |
5.85 |
semi-narrow |
Small inner rim diameter with an extremely shallow cup for brilliant tone. Easy high notes. Ideal for bass trumpet. |
| 45C2 |
24.26 |
semi-round/
standard |
standard |
5.85 |
semi-narrow |
Small inner rim diameter with a clean bite. Easy playability with a bright tone. Popular with studio players. |
| 46B |
24.58 |
standard/
standard |
semi-shallow |
5.85 |
semi-narrow |
Shallower cup than the 46C2. Outstanding high register. Fairly sharp shoulder. Brilliant tone. |
| 46C2 |
24.59 |
semi-round/
standard |
standard |
5.85 |
semi-narrow |
Relatively large inner rim diameter. A good choice for advanced jazz players. Ideal for demanding professional studio applications. |
| 47 |
24.98 |
standard/
standard |
standard |
5.85 |
semi-narrow |
Smaller inner rim diameter than the 48. Outstanding endurance. Rich tone suitable for ensembles and orchestras. |
| 48A |
25.25 |
standard/
standard |
shallow |
5.32 |
semi-narrow |
The 48 rim combined with a very shallow cup. For alto trombones.Bright tone with good volume. Ideal for baroque compositions. |
| 48 |
25.25 |
standard/
medium |
medium |
6.62 |
semi-wide |
Well-balanced rim and cup for all-around playing. Refined design meets the needs of professional players. |
| 48D |
25.25 |
standard/
standard |
semi-deep |
6.62 |
semi-wide |
Same rim as the 48 with a relatively deep cup. Rich lower register with a rich, soft tone. Also ideal for euphonium. |
| 51B |
25.23 |
standard/
standard |
semi-shallow |
6.92 |
semi-wide |
The 51 rim with a relatively shallow cup. Powerful sound. Popular with ensemble and orchestra euphonium players. |
| 51 |
25.23 |
standard/
standard |
standard |
6.92 |
semi-wide |
Relatively large inner rim diameter with large cup volume for a dark sound. Standard euphonium model with a beautiful rich tone. |
| 51C4 |
25.23 |
semi-flat/
standard |
standard |
6.92 |
semi-wide |
Shallower cup than the 51. Plenty of volume and power. Solid tone throughout the instrument's range. Ideal for symphony orchestra playing. |
| 51D |
25.24 |
standard/
standard |
semi-deep |
7.11 |
semi-wide |
An even deeper cup than the 51 for a heavy, rich tone. Specifically for euphonium. Ideal for advanced players who prefer a dark sound. |
| 52 |
25.65 |
standard/
standard |
standard |
7.11 |
semi-wide |
Larger inner rim diameter and cup than the 51. Heavy tone. For advanced players. |