Which has a bigger cup — Schilke 45B or Schilke 47B?

The Schilke 47B has a cup diameter of 24.87 mm / 0.9791 in compared to 24.30 mm / 0.9567 in on the Schilke 45B — a difference of 0.57 mm / 0.0224 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Schilke 45B and Schilke 47B?

Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.

Schilke 45B vs Schilke 47B

Name: Schilke 47B
Brand: Schilke

The Schilke 47B has a wider cup diameter, the Schilke 47B has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material

Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.

Mouthpiece A

Schilke 45B

• Trombone

Material—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Schilke 47B

• Trombone

Material—

Best suited for

📣High-volume projection — open throat for power

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.