Which has a bigger cup — Giardinelli 4M or Schilke 45B?

The Giardinelli 4M has a cup diameter of 25.40 mm / 1.0000 in compared to 24.30 mm / 0.9567 in on the Schilke 45B — a difference of 1.10 mm / 0.0433 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Giardinelli 4M and Schilke 45B?

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

Giardinelli 4M vs Schilke 45B

Name: Schilke 45B
Brand: Schilke

The Giardinelli 4M has a wider cup diameter, the Giardinelli 4M has a larger throat opening.

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

The taper behind the throat leading to the shank. Affects projection and tone character.

Mouthpiece A

Giardinelli 4M

• Trombone

Backbore1/4" (.250)

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Schilke 45B

• Trombone

Backbore15/64 .2344"

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.

Open in interactive tool + Add third mouthpiece Giardinelli 4M details Schilke 45B details Giardinelli 4M equivalents Schilke 45B equivalents

Giardinelli 4M vs Schilke 45B

Playing Characteristics

What Do These Model Names Mean?

What Changes If You Switch?

Which is better?

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Compare Schilke 45B with others

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