Oh by all means, I believe you have.Alan Baer wrote: I believe I've researched this more that most and certainly realize that many others have their own opinions and research...
Al Baer
Thou this phenomena should not be compared to the same happening with instruments actually having a gap,
there are similarities and I am in the believe that a gap simulates a less aggressive (and longer) backbore of the MP
by increasing the velocity of the air toward the leadpipe and making the eddies generated by the MP shank
walls less important.
On the tuba it has more to do with feel and 'comfort zone' than an actual tuning device.
(this would be receiver/leadpipe/MP specific)
"Lectron who uses AM shank on all his 'euro' tubas witch quite ironic leaves quite a big gap"





