Detail 01
0.173 in. venturi
A narrow throat. Creates real back pressure, which makes quiet entrances and pitch centering easier but caps your loudest dynamics.

Independent shopping perspective
Marcinkiewicz's Standard Series 3 for French horn: a deep cup and narrow venturi, sized close to a Bach 7. A dark, controllable all-round mouthpiece.

Strong match
Consider the trade-offs
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
A narrow throat. Creates real back pressure, which makes quiet entrances and pitch centering easier but caps your loudest dynamics.
Detail 02
Deep for horn. Darkens and rounds the sound, adds body in the middle and low register, and asks more of the high range.
Detail 03
A middle-of-the-road horn rim. Familiar to most players and not a big adjustment from standard student mouthpieces.
Detail 04
A broad rim footprint. Spreads pressure over more lip, which helps endurance but reduces the sense of precise placement.
Detail 05
If a Bach 7 fits your face now, the rim here should feel familiar. The cup and throat are what change.
Detail 06
Rounded rather than sharp-edged. Kinder over long sessions, with less bite for locking in slurs and attacks.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
Yes. The rim sits close to a Bach 7, so the feel is familiar, while the deeper cup gives a fuller, darker sound with more body.
In loud orchestral playing, somewhat — it caps your volume ceiling. In return you get easier soft playing and more secure pitch centering.
Same rim diameter, roughly. This one is deeper cupped and much more resistant: darker and more controlled. The EF5 blows freer and brighter.
Yes. Horn mouthpiece shanks are standardized, so it fits single, double and triple horns from any maker.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.