Schilke 14 vs Yamaha TR-14C4
The Schilke 14 has a wider cup diameter.
Mouthpiece A
Schilke 14
• Trumpet
Cup diameter17.02 mm / 0.6701 in
Cup depthMedium
Rim width—
Throat diameter3.65 mm / 0.1437 in
Backbore26
Finish—
Material—
vs
Mouthpiece B
Yamaha TR-14C4
• Trumpet
Cup diameter16.88 mm / 0.6646 in
Cup depthMedium
Rim width—
Throat diameter3.65 mm / 0.1437 in
BackboreSemi-narrow
Finish—
Material—
Cup Diameter
The Schilke 14 has a cup diameter of 17.02 mm / 0.6701 in compared to 16.88 mm / 0.6646 in on the Yamaha TR-14C4 — a difference of 0.14 mm / 0.0055 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
Throat diameters are essentially identical at 3.65 mm / 0.1437 in, so resistance feel will be comparable.
Which is better?
Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.