The Bach Stradivarius 50A3 is a double rotor bass trombone with open wrap F and G-flat attachments which can be accessed independently using two Hagmann* rotary valves.
The LT50A3LG variant has a larger 10½-inch gold brass bell and lightweight nickel silver hand slide.
Note: model pictured is 50A3 standard model.
Also available in the Bach 50B3 range:
|Bell diameter (inches)
|Closed / standard
|Open / standard
|Open / Hagmann*
|Open / ‘Infinity’ axial-flow
Other model variant: †LT50A3LG
*The Hagmann free-flow valve appeared in the early 1990s as a further development away from the traditional rotary valve, following the introduction of the more complex Thayer axial-flow valve in the 1980s. The Hagmann design minimises distortion of the air flow inside the valve, resulting in a rich, full sound, and is easy to maintain using regular valve oil. Vincent Bach introduced the Hagmann valve into their Stradivarius trombone range in 1999.
Manufacturer’s website: conn-selmer.eu
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