Detail 01
30mm cup diameter; 7.89mm throat
These are the supplied dimensions for the 5L model.

Independent shopping perspective
Built around the Heritage Series cup design, the 5L uses a deep cup and matching backbore to produce a compact sound. Its 30mm cup diameter and 7.89mm throat make it a specified choice for F and Eb tubas. The design places a 1.2mm wall near the rim and additional metal at the cup base, combining the series’ responsive feel with its stated rich overtone structure. Gold plating on the rim and cup contrasts with the silver-plated body.

Strong match
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
These are the supplied dimensions for the 5L model.
Detail 02
The 5L is voiced for a compact sound.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
The 5L is identified as a good choice for F and Eb tubas.
The rim and cup are gold-plated, while the body is silver-plated.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.