Page 21 - Katalog DuerkHORNS 2020 FINAL

...one brilliant idea is not enough

The Lead pipe / Receiver System

The position of the mouthpiece in the lead pipe has a significant effect on the response and the center of the
sound, as well as the overall feeling of the instrument. This means that there are, in effect, two different mouth-
piece shanks in contact with one another, causing unavoidable variations on the positioning and conical fit of the
mouthpiece inside the lead pipe. In order to permanently remove this geometrical discrepancy, we developed our
DürkHorns Receiver System, which allows you to place your mouthpiece perfectly inside the lead pipe. It helps you
to fit as well as position your mouthpiece optimally. What’s more, you don’t even need a special tool to screw it on
and off. A simple coin suffices.

The two fundamental shanks are:

Thread pitch 1:30 e.g.: Tilz, Schmidt, Paxman, Alexander; Our Dürk HORNS Receiver which are marked with a T.
Thread pitch 1:20 e.g.: Klier, Hoyer, Yamaha; Our DürkHORNS Receiver are marked with a M.
Morse 0 Thread pitch corresponds to a conical ratio of 1:19, 212 e.g. Schilke, Bach.

This slight mistake concerning the thread can easily be neglected. This is why we assign these to thread pitch
1:20.

Of course, it is equally important to note the diameter of the mouthpiece shank itself.

Thus the second problem arises: the positioning of the mouthpiece in the lead pipe. If the diameter is larger, it is
not possible to get the mouthpiece deep enough into the lead pipe. If it is thinner, it goes too far into the lead pipe.
Resulting the horn is losing its center.

This is why we have developed these receivers in different sizes, ascending and descending in
0,5 mm increments. We always deliver our horns with two receivers to make sure that the “fit” is
correct and that nothing wobbles.
M and T are for models with DürkHorns lead pipes (models D1, D2, D3, D4, LDx6, D8, D10
and ab Aeternum). ML and TL are for models with original S.W. Lewis lead pipes (models LDx5,
LD Clevenger). These receivers are available at our own atelier as well as through our authorized
retailers.

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