| Model No. | Rim Inner Diameter (mm) | Throat (mm) |
Characteristics |
|---|---|---|---|
| SL-47L | 24.98 | 5.85 | Smaller inner rim diameter than the 48. Extended endurance. Plenty of volume. Ideal for ensemble and orchestra playing. |
| SL-48DL | 25.25 | 6.62 | Same rim as the 48 with a relatively deep cup. Rich low register with a soft tone. Also ideal for euphonium. |
| SL-48L | 25.25 | 6.62 | Well-balanced rim and cup with a fairly narrow backbore. Meets the needs of professional players. |
| SL-51BL | 25.23 | 6.92 | The 51 rim with a relatively shallow cup. Powerful sound. Popular with ensemble and orchestra euphonium players. |
| SL-51L | 25.23 | 6.92 | Relatively large inner rim diameter with large cup volume for a dark sound. Standard euphonium model with a large backbore. |
| SL-51C4L | 25.23 | 6.92 | Shallower cup than the 51. Plenty of volume and power. Solid tone throughout the instrument's range. Ideal for symphony orchestra playing. |
| EP-51DL | 25.24 | 7.11 | An even deeper cup than the 51 for a heavy, rich tone. Specifically for euphonium. Ideal for advanced players who prefer a dark sound. |
| SL-52L | 25.65 | 7.11 | Larger inner rim diameter and cup than the 51. Heavy tone. For advanced players. |
| SL-53L | 25.91 | 7.11 | Extremely large cup. Outstanding middle and low registers. Heavy tone. Ideal for beginning bass trombone players. |
| EP-53DL | 26.08 | 7.11 | Good response and tenor-single-like condensed sound. Designed for euphonium players to control the piano sound comfortably and the wider dynamics range at the same time. |
| SL-54L | 26.15 | 7.11 | Larger inner rim diameter and cup than the 52. Suitable for larger orchestras. |
| SL-55L | 26.35 | 7.11 | Larger inner rim diameter and cup than the 54. Heavy tone. Also ideal for bass trombone. |