Bach 18 vs Conn Connstellation 7BW
the Conn Connstellation 7BW features a deeper cup.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bach 18
• French Horn
Cup diameter16.15 mm
Best suited for
All-round versatile — balanced cup for general playing
High-volume projection — open throat for power
vs
Mouthpiece B
Conn Connstellation 7BW
• French Horn
OrchestralCup diameter—
Best suited for
French horn players
French horn size 7; smaller cup; more compact tone; Wide rim; larger rounded inner radius; less bite
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.