Bach 12E vs Bob Reeves DR ORCH
The Bob Reeves DR ORCH has a wider cup diameter, the Bob Reeves DR ORCH features a deeper cup.
Mouthpiece A
Bach 12E
• Trombone
Cup diameter24.50 mm / 0.9646 in
Cup depthShallow
Rim width—
Throat diameter5.85 mm / 0.2303 in
Backbore—
Finish—
Material—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Bob Reeves DR ORCH
• Trombone
Cup diameter25.55 mm / 1.0059 in
Cup depthMedium
Rim width—
Throat diameter—
Backbore—
Finish—
Material—
Cup Diameter
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 12E — a difference of 1.05 mm / 0.0413 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bob Reeves DR ORCH has a medium cup while the Bach 12E has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
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.