“As a matter of fact: after a couple of days of trying I feel free to say this: The Reeves #42 underpart with Warburton #5 top gives excellent results despite of the little mismatch. The sound is rather fat, warm and jazzy. I play a large bore Bach Strad New York #7 edition 2007 by the way. This horn produces already a warm sound. – Also good is the Bach # 7B underpart with the same Warb #5 rim on top. This Bach mouthpiece was already exceptional before the threading, in comparison with other Bach mpcs. It gives a Chet Baker like sound. I’m glad I sent it too you for threading. – And last but not least the GR #65MX underpart goes well with your rim #42 on top! (although the rim is slightly to thick for me and although again there is a mismatch between the two parts). This last combination gives the more clean sound and most ease of intonation.
I can imagine that a classical player would fall for this kind of sound.
I as a jazz trumpeter feel that the GR mpc produces too clean a sound. It seems that the GR people in their quest to make a scientific masterpiece that is perfectly calculated have succeeded in making a mouthpiece that creates too much of a sinusoidal sound, i.e. it is too clean and therefore too cold. Obviously they have sacrificed the warmth (which is essentially permitting a few slightly out of tune frequencies in the whole sound spectre) in favor of ease of intonation and full sound. As they say: discontinuities are in ALL other mpcs (a bold statement) and not in theirs; this might very well be the reason that their mpcs (at least the few #65s that I have tried) produce too clean sounds. At least for jazz musicians like me who have a different sound ideal in their minds. At the same time this is an illustration of the fact that you always end up with a compromise: more warmth means a slighly less pure sound.
I did not mean to criticize one of the best mpc makers, it is all a matter of taste. I hope you don’t publish this second part of my writing. And maybe you don’t even agree with what I am writing and think that I as an amateur should stay away from the physics.
Anyway, I am glad with the parts and I might come back to you in the future.
Yours truly,
Edward H.J. Ninck Blok.
PS. I also was happy that there were no traces of a lathe on the parts. Nice work! Thanks again!”
