Which has a bigger cup — Bob Reeves 40/SV/X or Schilke 13A4a?

The Schilke 13A4a has a cup diameter of 16.76 mm / 0.6598 in compared to 15.88 mm / 0.6252 in on the Bob Reeves 40/SV/X — a difference of 0.88 mm / 0.0346 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bob Reeves 40/SV/X and Schilke 13A4a?

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

Bob Reeves 40/SV/X vs Schilke 13A4a

Name: Schilke 13A4a
Brand: Schilke

The Schilke 13A4a has a wider cup diameter.

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

Bob Reeves 40/SV/X

• Trumpet

BackboreX

Best suited for

🎺Lead / commercial — shallow cup for brightness and range

Mouthpiece B

Schilke 13A4a

• Trumpet

Backbore27

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.