Which has a bigger cup — Bach 12C or Bob Reeves DR ORCH?

The Bob Reeves DR ORCH has a cup diameter of 25.55 mm / 1.0059 in compared to 24.50 mm / 0.9646 in on the Bach 12C — a difference of 1.05 mm / 0.0413 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 12C and Bob Reeves DR ORCH?

The Bob Reeves DR ORCH has a medium cup while the Bach 12C has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Bach 12C vs Bob Reeves DR ORCH

Name: Bob Reeves DR ORCH
Brand: Bob Reeves

The Bob Reeves DR ORCH has a wider cup diameter, the Bob Reeves DR ORCH features a deeper cup.

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

The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.

Mouthpiece A

Bach 12C

• Trombone

Rim width—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Bob Reeves DR ORCH

• Trombone

Rim width—

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 12C details Bob Reeves DR ORCH details Bach 12C equivalents Bob Reeves DR ORCH equivalents

Bach 12C vs Bob Reeves DR ORCH

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