I am now ready to share my thoughts (and videos!) regarding the Sinfonico. You can find my full review on the blog, here:
http://www.dwerden.com/forum/entry.p...nico-Euphonium
In that you will find links to 3 videos. The first is my doing A/B comparisons of the Adams (for reference) and Sinfonico. There are 12 total excerpts, counting the lead-in, and I reverse the order of instruments in each one so neither horn is always first or last. The 2nd video is just me showing some features, the bell size (I find that especially interesting), etc. And the 3rd (new) video is a closer look at the mouthpiece receiver bits that come standard with the Wessex (this one contains something you want to know if you plan to use them).
I have added the Sinfonico's measurements to the Valve Spacing Charts:
http://www.dwerden.com/forum/showthr...-Spacing-Chart
And I modified the intonations chart pages to now show the Sinfonico, replacing the original prototype. For your reference, here is the prototype and the Sinfonico overlaid:
At least some of these differences may be due to the longer tuning slide I used on the new one. That changes the nodes a bit, I suppose, and could affect more than just the overall tuning.