Tony E wrote:So how 'bout it:
Is the "FILLED AND CONTAINED" sound "just beyond" our physiological abilities on a BBb tuba???
I didn't read the "filled and contained" sound article, but if the words match the sound of Bobo playing, then that sound is likely not what you'd pick up a large tuba to create. Bobo never played a particularly large tuba--his largest was a 188, right? All his solo work was done on a 184 CC or (later) even a 621 F. To me, his whole sound concept is built around relatively smaller instruments.
While I find that sound concept exciting in the extreme, I do not think it is the only valid sound concept out there. There are many players who have gone for breadth with focus, while Bobo's sound is focus first and foremost. I've listened to all sorts of sounds on orchestral recordings and in person, and I find the breadth of Jacobs or those who follow his model as musically valid as Bobo's Power Sound.
So, if Bobo is saying, "you can't get the kind of sound I particularly like using a big tuba, particularly a Bb tuba", I would be more inclined to take it at face value.
Every preacher has his heresy, of course. Even the best ones.
As to the challenge I have issued many times stating that one cannot tell the difference by listening whether a good performer is playing a Bb or a C tuba, I stand by that. Bobo will be listening for something very specific, something that many players may not even be seeking. The rest of mortal mankind will be listening more generally. Tubas are primarily an ensemble instrument measured by what they do in support of corporeal musical objectives, not by whether they impress even the greatest among tuba players.
Can a 5% increase in the air volume of the bugle make that big a difference? A Miraphone 186 Bb and 186 C, for example, have the same bell and valve bodies. The instrument doesn't go conical until the crook of the tuning slide, which is about five feet down the bugle from the mouthpiece. The bell stacks are the same on the two instruments, which means that the last three feet of the bugle is the same. So, a 186 Bb expands from around .8 inches bore to around 4" bore in 10 feet of bugle, and the 186 C does so in about 8 feet of bugle. If the taper is uniform in that part of each instrument, the difference in air volume will be about 100 cubic inches, out of an instrument that has an air volume of about 2000 cubic inches (most of it in the bell stack). The degree of taper will make a bigger difference, it seems to me, and this varies all over the place.
One final point: Has Mr. Bobo listened to the same players switching back and forth between similar Bb and C instruments, noting that he got "filled and contained" more when they played C instruments? I rather doubt it. I think he finds that Bb players, as a class, don't give him what he's looking for than C players, as a class. I think that is more a comparison of the players than the instruments.
Rick "who wonders if anyone listens with the same set of standards as Bobo" Denney