Yamaha BB-64
TubaIn Production
Precision Specifications
RIM DIAMETER30.45 mm
CUP DEPTHMedium
THROAT ∅8.35 mm
BACKBOREStandard
SHANKTuba
CUP SHAPE—
Rim Widthstandard
Rim Contourstandard
Throat Drill #—
Materialbrass
FinishSilver plated
Weight—
Recommended For
Student
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Reference Notes
Ideal beginner model for young players.41 Use these measurements as a comparison starting point: fit and response still depend on the player, dental structure, instrument receiver, and each manufacturer's measuring method.
Brand Deep Dive
Yamaha · BrassFit Science
Yamaha Mouthpiece Guide
Yamaha mouthpiece numbering, cup families, and instrument-specific selection guide.