Posted by Klaus on November 11, 2001 at 10:49:42:
In Reply to: Re: Tenor tuba ? posted by Jay Bertolet on November 11, 2001 at 08:49:32:
Below the link for Miraphone site (the link on the Shops page is defunkt on my computer). You will have to scroll to the right to find the button for the English version.
By searching the Bb Baritones you will find 3 main types of bore:
14.7mm = .579" through all 4 valves
15.5mm = .610" through all 4 valves
14.7mm = .579" increasing to 16.2mm = .638" through the valves. Whether it is an increase in small steps through all 4 valves or just on jump to the bore of the 4th valve can not be deduced precisely from the pages. The word "conical" would suggest the small increments.
The three bell diameters are:
290mm = 11.417"
310mm = 12.205"
340mm = 13.386" (on a bell front model)
Klaus