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Another type of hidden problem to fix is tubing ends under the ferrules that join the various pieces of tubing. The tubing ends on a better horn are cut off square and fit together perfectly under the ferrules, so that there is minimal acoustic disturbance.
In the case of revising my first project horn (last worked on in the 1990s, more here), the fine folks at King/Cleveland were not quite so careful. The part on the left was cut off at an angle, so under that joint there was an area where the acoustics of the horn were negatively impacted. This is the same piece that I discovered also had the ring stuck in it (see the UPDATE to the previous post).
The good thing is that by disassembling this horn and working it over with a new valve section, and correcting issues like these, it has got to play better! With luck by the end of next week it will be back together, but I am taking this slow to be sure everything lines up as well as possible.
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