bloke wrote:I'm extraordinarily lucky to own an F tuba that offers a combination of an extraordinarily good scale and extraordinarily good flexibility which allows me to "hold and play" it.
Well, you do have to push buttons with that left hand, so it's still doing more than just holding the instrument.
And you have some combinations that are different than other six-valve F tubas. You are using the availability of six valves in different combinations to make minor adjustments to the length of the bugle so that it will match your buzz pitch.
There is another point we haven't brought up, but that you once described to me based on playing a certain really famous instrument. Some tubas are a bit more broad-banded than others, in that the resonant frequency is not so sharply resonant that a little variation in the buzz pitch causes a noticeable change in tone. Perhaps part of the magic of that legendary instrument (of which two were made) is that one can vary the buzz frequency without undermining the tone.
I think it's fair to say that anyone who cannot buzz the correct frequency for a given situation has no need of the various methods for adjusting the bugle length to match. Those who do are probably just showing off. Those are the folks who need a tuba with narrow slots that will correct their buzz errors, sorta like Autotune. A Miraphone 186 has some of these qualities. The B&S Symphonie will play in tune if the player plays in tune. But it will not cover for a tin-eared tuba player. (I used to put myself in the tin-ear category, but I think I've been hard on myself. I seem to play in tune in when playing with good musicians. And I certainly never fool with the slides on my F tuba. The B&S seems pretty good about delivering a good tone--to the extent I'm able to feed it--even when the pitch is a bit bent.)
Rick "noting that Stauffer learned his lesson about slide pulling back in the 40's on a Conn Orchestra Grand Bass, not exactly the pinnacle of good intonation" Denney