Variance in the same model
Most of us like to try new horns - I certainly do (even though I've settled into what I consider the perfect setup for me currently). And when shopping and testing, and shopping some more and testing some more, we'll often play on several examples of the same make and model. Theoretically, modern instruments coming out of a factory SHOULD be pretty consistent from horn to horn, but we know that's not always the case.
That got me wondering - what exactly are all the variables that can make such big differences from horn to horn, most things being equal? What kinds of things in the manufacturing process can make one euphonium a dog and the very next one amazing?
To quote Peter Venkman: "Pretend for a moment that I don't know anything about metallurgy, engineering, or physics, and just tell me what the hell is going on."
Sean Kissane
Low Brass Specialist, Paige's Music
Principal Euphonium, Indianapolis Brass Choir
Principal Euphonium, Crossroads Brass Band