Detail 01
Open-V backbore
This is the backbore specification for model 5.

Independent shopping perspective
For tenor or alto horn, the gold Heritage Series 5 is the range’s deepest and narrowest option. It combines a 17.50mm cup, 6.35mm rim, 5.20mm throat, and Open-V backbore. The model is described as flexible and rich-toned, with a resonant, full upper register. Heritage construction places greater mass near the throat and backbore while keeping the walls toward the rim thinner, supporting response at softer dynamics and articulation higher up.


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
This is the backbore specification for model 5.
Detail 02
Model 5 is positioned this way within the listed tenor and alto horn range.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
It is a Heritage Series mouthpiece for tenor horn and alto horn.
It has a 17.50mm cup diameter, 6.35mm rim width, and 5.20mm throat.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.