Bach 6½AL (large shank) vs Bob Reeves Jay Friedman Signature
The Bob Reeves Jay Friedman Signature has a wider cup diameter.
Mouthpiece A
Bach 6½AL (large shank)
• Trombone
Cup diameter25.40 mm / 1.0000 in
Cup depthDeep
Rim width—
Throat diameter6.63 mm / 0.2610 in
Backbore—
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
vs
Mouthpiece B
Bob Reeves Jay Friedman Signature
• Trombone
Cup diameter26.26 mm / 1.0339 in
Cup depthDeep
Rim width—
Throat diameter—
Backbore—
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
Cup Diameter
The Bob Reeves Jay Friedman Signature has a cup diameter of 26.26 mm / 1.0339 in compared to 25.40 mm / 1.0000 in on the Bach 6½AL (large shank) — a difference of 0.86 mm / 0.0339 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a deep cup depth, so the sound character from depth alone will be very similar.
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.
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