Detail 01
.675 inch (17.14mm) cup diameter
Small-to-medium rim size. Less lip inside the cup, which favors control and endurance over raw volume.
Product detailSKU #1275776904078
SchilkeStandard Series Trumpet Mouthpiece Group II in Gold 15C4 Gold
Independent shopping perspective
The Korena take
Gold-plated Schilke 15C4: a .675-inch cup with a semi-flat rim, aimed at players who need endurance through long sessions and want a smoother rim feel.
Strong match
Who this is for
- Long rehearsals and pit work where rim fatigue ends the night early
- Model 15 players who want more comfort without changing cup size
- Players whose lips react badly to silver plating
Consider the trade-offs
When to look elsewhere
- Players who need a bigger rim; .675 inch runs small
- Upper-register specialists better served by the shallow A-cup models
- Anyone buying a spare horn mouthpiece at this price
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
Number 4 semi-flat rim
Wider, flatter contact area spreads pressure across the lip, so fatigue arrives later in the day.
Detail 03
26 throat
The bore size used across most of this series, so response and resistance stay consistent if you switch models.
Detail 04
Same dimensions as the model 15
You keep the free-blowing, clear character of the 15. The rim shape is the only real change.
Detail 05
Gold plating
Slicker and softer under the lip than silver, and an option if silver plating irritates your skin.
Final check
Know before you order
- 01Ships as the mouthpiece alone; budget for a pouch if you carry it loose
- 02Trumpet shank only — it will not seat in a cornet or flugelhorn
- 03Give a new rim shape two weeks before judging it; endurance dips first
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What does 15C4 actually mean?
15 is the rim size, .675 inch. C is the cup. 4 is the rim contour — the semi-flat shape Schilke uses for endurance rather than the rounder profiles.
02Is the gold worth it over the silver 15C4?
Cup, rim and throat are identical. Gold feels slicker on the lip and suits players who react to silver. If neither matters to you, the silver plays the same for far less.
03Will this help my high register?
Not directly. It is built around rim comfort and endurance. The shallow A-cup models with the tighter backbore, like the 15A4a, are the ones aimed at upper-register work.
04Will it fit my trumpet?
Yes, any standard Bb or C trumpet receiver. It will not fit a cornet or flugelhorn, which take different shanks.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsBody & build
- Color
- Gold
21 detailsOther
- 15
- 17.12mm, .674 inch cup diameter; 26 throat. An excellent all-around mouthpiece which offers a free blowing, clear sound.
- 16
- 17.20mm, .677 inch cup diameter; 26 throat. This medium-large diameter mouthpiece produces a full, free blowing quality.
- 17
- 17.33mm, .682 inch cup diameter; 26 throat. A compromise of all the medium characteristics, this mouthpiece is an excellent medium to large diameter mouthpiece.
- 18
- 17.52mm, .690 inch cup diameter; 26 throat. The high point being nearer to the center makes this mouthpiece feel smaller than it is. The standard characteristics produce a rich, brilliant tone.
- 19
- 17.65mm, .695 inch cup diameter; 26 throat. The C cup, number 3 rim and standard c-backbore are similar to the model 20 but with a slightly smaller diameter.
- 20
- 17.78 mm, .700 inch cup diameter; 26 throat. This large diameter is for the robust embouchure. Original mouthpiece of choice for Renold O. Schilke.
- 22
- 18.03mm, .710 inch cup diameter; 26 throat. Similar to the model 20 but with a larger inside diameter.
- 24
- 18.29mm, .720 inch cup diameter; 26 throat. Our largest cup diameter offered. This mouthpiece provides a huge volume of sound.
- 15a4
- 17.14mm, .675 inch cup diameter; 27 throat. Same as the 15A4a but with a larger c-backbore for an open feel.
- 16b4
- 17.20mm, .677 inch cup diameter; 26 throat. Same as the model 16C4 except the shallower, medium-small B cup offers more resistance, providing a brighter quality of sound. The 16B4 is an excellent choice for Eb trumpet when a player requires a bigger rim diameter.
- 18c3d
- 17.52mm, .690 inch cup diameter; 26 throat. Similar in dimension to the model 18 but with a larger d-backbore producing a large, teutonic tone.
- 16c4
- 17.20mm, .677 inch cup diameter; 26 throat. Similar to the 16 in dimensions, this mouthpiece offers a number 4 semi-flat rim for a more traditional feel and increased endurance.
- 17d4
- 17.33mm, .682 inch cup diameter; 26 throat. This mouthpiece includes a deeper D cup and number 4 semi-flat rim for improved endurance.
- 15c4
- 17.14mm, .675 inch cup diameter; 26 throat. This mouthpiece is similar to the model 15 but with the number 4 semi-flat rim for increased endurance.
- 17d4d
- 17.33mm, .682 inch cup diameter; 26 throat. A larger blowing mouthpiece than the 17D4 because of the increase d-backbore.
- 16c2
- 17.20mm, .677 inch cup diameter; 26 throat. This model offers the same options as the model 16, but instead offers a number 2 rim for increased flexibility.
- 15a4a
- 17.14mm, .675 inch cup diameter; 27 throat. A larger diameter mouthpiece with a shallow A cup and tight a-backbore for upper register playing. Number 4 semi-flat rim offers comfort in upper register.
- 18b4
- 17.52mm, .690 inch cup diameter; 26 throat. Ideal for a classical player looking for a commercial sound, the medium shallow cup and semi-flat rim provide resistance and comfort for upper register playing. Cup shape offers some sparkle in the sound with enough volume for tone.
- 20d2d
- 17.73mm, .698 inch cup diameter; 26 throat. Similar to the model 20 in diameter but includes a larger D style cup, number 2 semi-round rim and larger d-backbore.
- 17b4
- 17.33mm, .682 inch cup diameter; 26 throat. Well suited for the player looking for a shallower cup in a larger diameter. Medium-small B cup offers more brilliance for projection with number 4 semi-flat rim for comfort.
- 15b
- 17.12mm, .674 inch cup diameter; 26 throat. With the same diameter as the model 15, this mouthpiece includes B style cup which produces a more brilliant sound than the standard model 15 mouthpiece.
