Bach A47I
Bb/F large-bore tenor trombone · professional · current
Artisan modular large-bore tenor with Infinity axial-flow valve; open blow, customizable
| Type | tenor |
|---|---|
| Key | Bb/F |
| Bore class | large |
| Bore size | .547″ |
| Valve configuration | F attachment |
| Valves | 1 |
| Rotor type | axial-flow (Thayer) |
| Wrap | open wrap |
| Bell diameter | 8.5″ |
| Bell material | yellow brass |
| Bell construction | one-piece |
| Slide | chrome-plated nickel silver inner tubes; reverse-construction main tuning slide |
| Finish | clear lacquer |
| Level | professional |
| Era | current |
| Country | USA (Elkhart, Indiana) |
Features: Artisan line (level 900); patented Infinity axial-flow valve (sealed bearings); modular detachable bell (yellow/gold/lightweight gold brass); reverse tuning slide