Detail 01
.675 inch cup diameter
Small end of the Standard line. Less lip vibrating inside the rim, so endurance comes easier than on a 17 or 20.
Product detailSKU #1275776904166
SchilkeStandard Series Trumpet Mouthpiece Group II in Gold 15A4 Gold
Independent shopping perspective
The Korena take
Schilke's 15A4 in gold plate: a small .675-inch diameter with a shallow A cup. Built for lead and commercial trumpet playing up high.
Strong match
Who this is for
- Lead trumpet players living above the staff on long sets
- Commercial and show work needing cut through a horn section
- Players who lose endurance on wide rims like the 20
Consider the trade-offs
When to look elsewhere
- Orchestral players who need a dark, full low register
- Beginners still building a stable embouchure and air support
- Anyone wanting one mouthpiece for every playing situation
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
Shallow A cup
Short air column above the lips. Brighter and more cutting, high notes slot easier, and the low register gives up some body.
Detail 03
27 throat
Tighter than the 26 throat used across most of the Standard line. Adds resistance you can push air against.
Detail 04
Large c-backbore
The one thing separating this from the 15A4a. It opens the blow back up after that tight throat, so it feels free rather than stuffy.
Detail 05
Number 4 semi-flat rim
Flatter contact spreads pressure over more lip. Aimed at comfort through long high passages rather than maximum flexibility.
Detail 06
Gold plating
Finish only. Cup, rim and throat dimensions are identical to the silver-plated version of the same model.
Final check
Know before you order
- 01This is the mouthpiece alone. Plan on your own pouch and cleaning brush.
- 02A shallow cup exposes weak air support. Keep your current piece during the switch.
- 03Changing rim size takes weeks to settle. Don't debut it at a gig.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Is the 15A4 a lead mouthpiece?
Yes. The shallow A cup and small .675-inch diameter are aimed at the upper register, with a bright sound that projects over a section.
02What's the difference between the 15A4 and the 15A4a?
Same .675-inch diameter, same 27 throat, same shallow A cup and number 4 rim. The 15A4 uses a larger c-backbore for a more open feel; the 15A4a has a tight a-backbore.
03Does gold plating change the sound?
The cup, rim and throat shape the sound, and those are the same on both finishes. Plating changes the surface your lips sit on, not the dimensions.
04Will it fit my trumpet?
It's a trumpet mouthpiece with a trumpet shank, so it drops into a standard Bb trumpet receiver. It won't fit a cornet.
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.
