Wedge 31H
TubaIn Production
Precision Specifications
RIM DIAMETER33.3 mm
CUP DEPTHDeep
THROAT ∅8.26 mm
BACKBORE—
SHANK—
CUP SHAPEDeep Funnel Helleberg
Rim Width—
Rim Contour—
Throat Drill #—
Material—
Finish—
Weight—
Recommended For
Orchestral
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Special Features
- Oval Wedge Rim
- Funnel Cup
- Helleberg Style
- Ergonomic Design
Reference Notes
31H tuba (33.3 mm). Comparable to Schilke 67. Deep Helleberg funnel for large orchestral BBb or CC tuba. 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.