Bob Reeves 40/B/69 vs Conn Connstellation 9CW
the Conn Connstellation 9CW features a deeper cup.
Mouthpiece A
Bob Reeves 40/B/69
• Trumpet
Cup diameter15.88 mm / 0.6252 in
Cup depthVery deep
Rim width—
Throat diameter—
Backbore69
Finish—
Material—
vs
Mouthpiece B
Conn Connstellation 9CW
• Trumpet
LeadCup diameter15.88 mm / 0.6252 in
Cup depth
Rim width—
Throat diameter—
Backbore—
Finish—
MaterialSilver-plated brass
Best suited for
Trumpet players seeking precise matched dimensions
Size 9 (15.88mm); larger cup; fuller lower register; Wide rim; larger rounded inner radius; less bit
Cup Diameter
Both mouthpieces have virtually identical cup diameters at 15.88 mm / 0.6252 in.
Cup Depth
The Conn Connstellation 9CW has a — cup while the Bob Reeves 40/B/69 has a very deep cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Material
The Bob Reeves 40/B/69 is described as unspecified, and the Conn Connstellation 9CW as Silver-plated brass. Material affects mass, warmth, and how quickly the piece responds.
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.