The use of triggers for brass instruments specially the low brass is very common. For making the best instrument is still a very difficult task even for the most well known instrument makers in the world. The sound, tuning, looks, good and easy playing are just a view problems we have to deal with. Each problem is connected and that's why it is so difficult to make a top-brass instrument.And then we have the problem of the many styles and different kind of brass players. The use of a trigger is a good tool for making you to play in tune and not loosing your sound. You can devote your technique for making sound(music) and not for bending your notes the right way.This MMIS-custom trigger is developed for the Besson 1967 and 1968 sovereign Euphoniums. Specially the f, f sharp and g are always on the high side.

By moving the main tuning slide and not the 1st or 3rd valve slide like the old Miraphone euphonium, you can very easy lower the pitch almost a º note (maximum operated).

The lever of this trigger is placed between the 3rd slide valve and is operated with your left thumb. Connected to the lever there is the tuning rod (for tuning the main tuning slide).

On the main tuning slide there is a brace to connect this tuning rod.On both ends of the tuning rod there are two miniballs.The material I use is mainly 8mm brass, for the lever arm and the tuning rod.The spring a use is a very heavy one otherwise the action will be to slow.