My guess is that there is more involved than simply the mpc stem depth and leadpipe venturi location.
The 'match-up' of the mpc's cup volume and backbore shape with the H177 can also have a big effect. It might also be as simple as you making small changes in how you play the horn to get the sound you want - back to the traditional (and valid) technique of using plenty of air flow, and embouchure control. Jay Kosta Endwell NY amateur player ------------------------------------------ Valerie WELLS valleriewells at msn.com wrote - I've been tootling around with a very, very old Holton H177. It plays quite well considering the condition it's in, except it has a slightly stuffy middle C. The mpc goes in about 1 - 2 mm farther than on my newer horn. I have two questions: (1) Do any of you know if this flaw can make a significant effect on the playing quality of a horn (such as the stuffy middle C?)? (2) What can be done to remedy this? Valerie _______________________________________________ post: horn@music.memphis.edu unsubscribe or set options at http://music2.memphis.edu/mailman/options/horn/archive%40jab.org