Originally Posted by
ghmerrill
While conceding the intended purpose of the 4th valve lock, it should be noted that an "off label" use of it is to turn your euphonium into a small bore 3-valve F tuba.
. . . which I have occasionally done
David Bjornstad
1923 Conn New Wonder 86I, Bach 6 1/2 AL
2018 Wessex EP100 Dolce, Denis Wick 4ABL
2013 Jinbao JBEP-1111L, Denis Wick 4AM
2015 Jinbao JBBR-1240, Denis Wick clone mouthpiece of unknown designation
Cullman (AL) Community Band (Euph Section Leader)
Brass Band of Huntsville (2nd Bari)