Hammond 29XLS
TubaCustom Order
Precision Specifications
RIM DIAMETER32.13 mm
CUP DEPTHMedium Shallow
THROAT ∅—
BACKBORE—
SHANKlarge shank
CUP SHAPEHelleberg
Rim Width—
Rim Contour—
Throat Drill #—
Material—
Finish—
Weight—
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Reference Notes
Shallower Helleberg for bright sound and quick articulation. Official 29/30/31 tuba system staged as explicit future mouthpiece rows. 32 and 33 mm custom endpoints are excluded from direct import. Inferred from Hammond tuba matrix stage pack. 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
Hammond · BrassFit Science
Hammond Guide
Trumpet size ladder, ML cup architecture, Friedman collaborations, and low-brass system logic.