Yamaha TR-15B4
TrumpetIn Production
Precision Specifications
RIM DIAMETER16.96 mm
CUP DEPTHMedium Shallow
THROAT ∅3.65 mm
BACKBOREStandard
SHANKHigh flexibility; fits Bb, C, D, and Eb trumpets.5
CUP SHAPE—
Rim Widthstandard
Rim Contoursemi-round
Throat Drill #—
Materialbrass
FinishSilver plated
Weight—
Recommended For
StudentAll Around
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Reference Notes
Yamaha TR-15B4 appears in the Trumpet catalog section with 16.96 mm rim, Medium Shallow cup, 3.65 mm throat, Standard backbore, and High flexibility; fits Bb, C, D, and Eb trumpets.5 shank. Database tags list it for Student and All Around use. 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.