Which has a bigger cup — Bach 30CB or Yamaha SL-53L?

The Bach 30CB has a cup diameter of 30.00 mm / 1.1811 in compared to 25.91 mm / 1.0201 in on the Yamaha SL-53L — a difference of 4.09 mm / 0.1610 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 30CB and Yamaha SL-53L?

The Bach 30CB has a very deep cup while the Yamaha SL-53L has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Bach 30CB vs Yamaha SL-53L

Name: Yamaha SL-53L
Brand: Yamaha

The Bach 30CB has a wider cup diameter, the Bach 30CB features a deeper cup.

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

Bach 30CB

• Trombone

Backbore—

Best suited for

🎻Orchestral playing — large cup for full, dark tone

Mouthpiece B

Yamaha SL-53L

• Trombone

BackboreSemi-wide

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 Bach 30CB details Yamaha SL-53L details Bach 30CB equivalents Yamaha SL-53L equivalents

Bach 30CB vs Yamaha SL-53L

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