Bob Reeves DR ORCH vs Giardinelli 1GM
The Giardinelli 1GM has a wider cup diameter, the Giardinelli 1GM features a deeper cup.
Mouthpiece A
Bob Reeves DR ORCH
• Trombone
Cup diameter25.55 mm / 1.0059 in
Cup depthMedium
Rim width—
Throat diameter—
Backbore—
Finish—
Material—
vs
Mouthpiece B
Giardinelli 1GM
• Trombone
Cup diameter27.00 mm / 1.0630 in
Cup depthDeep
Rim width—
Throat diameter6.75 mm / 0.2657 in
Backbore17/64 (.265)"
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
Cup Diameter
The Giardinelli 1GM has a cup diameter of 27.00 mm / 1.0630 in compared to 25.55 mm / 1.0059 in on the Bob Reeves DR ORCH — a difference of 1.45 mm / 0.0571 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Giardinelli 1GM has a deep cup while the Bob Reeves DR ORCH has a medium 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.