Which has a bigger cup — Bob Reeves 43/F or Denis Wick 4FL?

The Bob Reeves 43/F has a cup diameter of 17.07 mm / 0.6720 in compared to 16.50 mm / 0.6496 in on the Denis Wick 4FL — a difference of 0.57 mm / 0.0224 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bob Reeves 43/F and Denis Wick 4FL?

The Denis Wick 4FL has a very deep cup while the Bob Reeves 43/F has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Bob Reeves 43/F vs Denis Wick 4FL

Name: Denis Wick 4FL
Brand: Denis Wick

The Bob Reeves 43/F has a wider cup diameter, the Denis Wick 4FL 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

Bob Reeves 43/F

• Flugelhorn

Rim width—

Mouthpiece B

Denis Wick 4FL

• Flugelhorn

Rim width5.17 mm / 0.2035 in

Best suited for

📣High-volume projection — open throat for power

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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Bob Reeves 43/F vs Denis Wick 4FL

Playing Characteristics

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