Yamaha Standard Trumpet Mouthpieces
Model
Rim
Cup Depth
Throat
Backbore
Playing Characteristics
Inner Diameter Contour Thickness
5A4
15.9
semi-flat
thick
shallow
3.65
narrow
Extremely small inner rim diameter. Flat and wide. Small cup volume.
6A4a
15.9
semi-flat
thick
shallow
3.65
narrow
Very shallow cup for easy high notes.
7A4
16.24
semi-flat
thick
shallow
3.65
narrow
Relatively small inner rim diameter, but still flexible.
7B4
16.08
semi-flat
thick
semi-shallow
3.72
standard
Relatively large throat diameter with a sharp shoulder. Bright sound with easy high notes.
8C4
16.19
semi-flat
standard
standard
3.65
semi-narrow
Good for all-around playing, including solos. Combines an extended high range with rich lows.
9C4
16.28
semi-flat
standard
standard
3.65
semi-narrow
Somewhere between the 8C4 and 11C4, affording easy playability over a wide range. Well-defined rim bite for easy blowing and extended endurance.
11A4
16.46
semi-flat
semi-thick
shallow
4.3 mm
semi-narrow
Medium rim diameter with a shallow cup for easy high notes.
11B4
16.46
semi-flat
standard
semi-shallow
3.65
semi-narrow
A somewhat shallow cup and medium rim for extra endurance. Brilliant tone. Suitable for D, Eb , and piccolo trumpets.
11
16.32
standard
semi-thick
standard
3.72
standard
Relatively large throat with a sharp shoulder. Easy to play over the entire range, with a fairly bright sound. Good for beginners.
11C4
16.46
semi-flat
standard
standard
3.65
semi-narrow
Clean bite and well-balanced rim for all-around playing. Standard model for beginners and advanced players.
13A4a
16.2
semi-flat
thick
shallow
3.65
narrow
Relatively flat rim with a shallow cup for fast response.
13B4
16.63
semi-flat
standard
semi-shallow
3.65
semi-narrow
Superb clarity for large ensembles and orchestras. Well-matched to C trumpets. Powerful sound.
13C4
16.5
semi-flat
standard
standard
3.65
semi-narrow
Medium rim diameter and cup volume for all-around playing. Good for ensembles and orchestras. Fairly dark sound.
13D4
16.68
semi-flat
standard
semi-deep
3.65
semi-narrow
Fairly deep cup with rich, mellow tone and dark sound.
14A4a
16.68
semi-flat
semi-thick
shallow
3.65
narrow
Fast-response high range and powerful sound.
14B4
16.85
semi-flat
standard
semi-shallow
3.65
semi-narrow
Relatively large rim diameter and shallow cup. Outstanding overall balance for all musical genres.
14C4
16.88
semi-flat
standard
standard
3.65
semi-narrow
Rim designed for outstanding facility and flexibility.
14D4
16.8
semi-flat
standard
semi-deep
3.65
semi-narrow
A fairly deep cup with a medium rim. Rich, somewhat dark tone. Well suited to orchestral playing.
14E4
16.84
semi-flat
semi-thick
deep
3.88
wide
The 14B4 rim with a unique cup for a soft tone. For rotary trumpets. Large backbore and throat.
15B4
16.96
semi-flat
standard
semi-shallow
3.65
semi-narrow
Fairly large rim diameter with a shallower cup than the 15C4 Outstanding flexibility. Suits Bb , C, D, and Eb trumpets.
15C4
16.98
semi-flat
standard
standard
3.65
semi-narrow
Clean rim bite with a standard U-shaped cup. Bright, powerful tone.
15E4
16.92
semi-flat
semi-thick
deep
3.88
wide
Rim designed for outstanding facility and flexibility. For rotary trumpets. Between the 14E4 and 16E4 in size.
16C4
16.92
semi-flat
standard
standard
3.65
semi-narrow
Large rim and medium cup for easy playability over a wide range. High volume.
16D
17.14
standard
standard
semi-deep
3.65
semi-narrow
A deeper cup than the 16C4. Soft tone. Mellow-but-solid sound.
160000
17.14
semi-flat
semi-thick
deep
3.88
wide
The 16C4 rim with a unique deep cup. Heavy tone. For rotary trumpets. Maximum inner rim diameter.
17B4
17.3
semi-flat
standard
semi-shallow
3.65
semi-narrow
A good combination of large rim and relatively shallow cup. Powerful sound.
17C4
17.3
semi-flat
standard
standard
3.65
semi-narrow
Deeper cup than the 17B4. Powerful, dark sound.
17D4
17.3
semi-flat
standard
semi-deep
3.65
semi-narrow
An even deeper cup than the 17C4 for an exceptionally dark, heavy tone. Good for players who prefer a mellow sound.
18C4
17.42
semi-flat
standard
standard
3.65
semi-narrow
High volume with an exceptionally large inner rim diameter and deep cup.