Bach 7B vs Schilke 7B4
The Bach 7B has a wider cup diameter, the Bach 7B features a deeper cup, the Bach 7B has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bach 7B
• Trumpet
Cup diameter16.20 mm / 0.6378 in
vs
Mouthpiece B
Schilke 7B4
• Trumpet
Cup diameter16.08 mm / 0.6331 in
Best suited for
All-round versatile — balanced cup for general playing
Cup Diameter
The Bach 7B has a cup diameter of 16.20 mm / 0.6378 in compared to 16.08 mm / 0.6331 in on the Schilke 7B4 — a difference of 0.12 mm / 0.0047 in. A wider cup generally produces a fuller, darker tone but requires more air support.
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.