Rath R4F
Bb/F large-bore tenor trombone · custom · current
Large-bore (.547") Bb/F tenor; removable F-valve section converts to straight tenor.
| Type | tenor |
|---|---|
| Key | Bb/F |
| Bore class | large |
| Bore size | .547″ |
| Valve configuration | F attachment |
| Valves | 1 |
| Bell diameter | 8.5″ |
| Bell material | yellow brass |
| Slide | yellow brass |
| Leadpipe | interchangeable |
| Finish | clear lacquer |
| Level | custom |
| Era | current |
| Country | England |
Features: Modular/build-to-order; valve choice of René Hagmann, Willson Rotax or Voigt (.547" wrap tubing); detachable valve/gooseneck conversion; bell yellow/gold/red brass or nickel silver in std/light/heavy; slide in yellow brass, bronze or nickel silver; interchangeable leadpipe (4 materials, 5 sizes).