Bob Reeves 4G/JF vs Denis Wick 1AL
The Denis Wick 1AL has a wider cup diameter, the Denis Wick 1AL features a deeper cup.
Mouthpiece A
Bob Reeves 4G/JF
• Trombone
Cup diameter26.00 mm / 1.0236 in
Cup depthDeep
Rim width—
Throat diameter—
Backbore—
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
vs
Mouthpiece B
Denis Wick 1AL
• Trombone
Cup diameter27.11 mm / 1.0673 in
Cup depthVery deep
Rim width6.09 mm / 0.2398 in
Throat diameter7.45 mm / 0.2933 in
Backboreopen
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
Cup Diameter
The Denis Wick 1AL has a cup diameter of 27.11 mm / 1.0673 in compared to 26.00 mm / 1.0236 in on the Bob Reeves 4G/JF — a difference of 1.11 mm / 0.0437 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Denis Wick 1AL has a very deep cup while the Bob Reeves 4G/JF has a deep 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.