Bach 50AF3
Bb/F/Gb large-bore bass trombone · professional · current
Professional double-valve bass trombone with in-line independent Infinity axial-flow valves, open wrap; open blow
| Type | bass |
|---|---|
| Key | Bb/F/Gb |
| Bore class | large |
| Bore size | .562″ |
| Valve configuration | Double valves (independent / inline) |
| Valves | 2 |
| Rotor type | axial-flow (Thayer) |
| Wrap | open wrap |
| Bell diameter | 9.5″ |
| Bell material | yellow brass |
| Bell construction | one-piece |
| Slide | chrome-plated nickel silver inner tubes; yellow brass outer slide |
| Finish | clear lacquer |
| Level | professional |
| Era | current |
| Country | USA (Elkhart, Indiana) |
Features: Stradivarius line; double in-line independent Infinity axial-flow valves (sealed bearings), open wrap