Detail 01
0.206 in. venturi
A wide throat. Less back pressure, more air through the horn, higher volume ceiling — but it demands steady air support.
Product detailSKU #1308251061050
MarcinkiewiczPro-Line Concert Hall Series French Horn Mouthpiece CH EF5 - John Cerminaro
Independent shopping perspective
The Korena take
A French horn mouthpiece from Marcinkiewicz's Concert Hall line, cut with a wide venturi for players who want a free, open blow and volume in reserve.
Strong match
Who this is for
- Orchestral and large-ensemble horn players needing carrying power
- Strong-air players who feel choked by tight backbores
- Low-horn and second-horn work where volume matters
Consider the trade-offs
When to look elsewhere
- Students still building air support — the open blow tires them
- Players who rely on resistance to place soft entrances
- Anyone wanting a dark, covered chamber-music sound
What matters in use
The specifications, translated
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 02
0.688 in. inside rim diameter
A moderate horn rim. Enough lip inside the cup for flexibility without spreading your embouchure thin on long passages.
Detail 03
0.878 in. cup depth
On the shallower side for horn. Brightens the sound and helps the upper register speak more easily.
Detail 04
Round rim contour
No sharp bite. Comfortable over long rehearsals, though it gives less grip than a flatter, more defined rim edge.
Detail 05
Smaller than a C4
If you play a C4 now, expect a slightly tighter, more focused feel on the lips and a firmer high register.
Detail 06
0.972 in. outside cup diameter
The overall rim footprint on the lip. Narrower than the Standard 3, so it concentrates pressure over less area.
Final check
Know before you order
- 01Sold alone — no pouch, brush or case included
- 02Wide venturi needs real air support; underblowing makes it sound thin
- 03Give it two weeks before judging — response feel changes as you adapt
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01How is this different from the Standard Series 3?
Nearly the same rim diameter, but this has a shallower cup and a much wider venturi. Brighter, freer-blowing, louder ceiling. The Standard 3 is deeper and more resistant.
02Is this good for a high school player?
Usually not. The open throat rewards developed air support. Students often lose focus and tire quickly on wide-venturi mouthpieces.
03I play a C4 now. Will this feel smaller?
Yes. It sits slightly under a C4, so expect a more compact feel on the lips and a bit more security up high.
04Does it work for both single and double horns?
Yes. French horn mouthpiece shanks are standard, so it seats in single, double and triple horns alike.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsBody & build
- Color
- John Cerminaro
4 detailsSize & weight
- Inside Cup Diameter
- 0.688 in. (17.42 mm)
- Cup Depth
- 0.878 in. (22.70 mm)
- Length
- 2.500 in. (63.50 mm)
- Outside Cup Diameter
- 0.972 in. (23.55 mm)
4 detailsOther
- Comparison Only
- smaller than C4
- Rim
- round
- Model Number
- John Cox CH EF21 (with B rim)
- Drill Venturi
- 0.206 in. (5.23 mm)
