Yamaha Neo BBb Tuba - Bore Size?

Discussion in 'The Rehearsal Room' started by Matthew, Feb 11, 2014.

  1. Matthew

    Matthew Active Member

    Can anyone confirm what the bore size is of the Yamaha Neo BBb Tuba please? Can't seem to find this anywhere and would like to compare with Besson/York and other Rotary models.

    Thanks! :)
  2. Matthew

    Matthew Active Member

    Found this mysterious spec at last!

    YBB-632 Bore Size = 18.5-20.0mm (0.728"-0.787"). 500mm Bell Size, 3+1 Valves.

  3. pt88

    pt88 New Member

    How does that compare to besson/York 994, not sure what the Bore Size is, 18.5-20.0 mm is this the size of the tapper over the length of the lead pipe

    PT88.( might have to change this trying my old 24aw again)
  4. MoominDave

    MoominDave Well-Known Member

    Are those numbers quoted at 2nd valve and 4th valve? Never quite sure which numbers are being quoted with tuba-type instruments...
  5. Laserbeam bass

    Laserbeam bass Active Member

  6. Matthew

    Matthew Active Member

    My new Neo BBb arrived today - the build quality is superb. :)

    The 66D4 Mouthpiece is too small for my liking - my Bach 18 works well though, will have to experiment with other mouthpieces.