Which has a bigger cup — Bach 1B or Conn Connstellation 7CW?

The Bach 1B has a cup diameter of 17.00 mm / 0.6693 in compared to 16.42 mm / 0.6465 in on the Conn Connstellation 7CW — a difference of 0.58 mm / 0.0228 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 1B and Conn Connstellation 7CW?

The Conn Connstellation 7CW has a — cup while the Bach 1B has a deep cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Bach 1B vs Conn Connstellation 7CW

Name: Conn Connstellation 7CW
Brand: Conn

The Bach 1B has a wider cup diameter, the Conn Connstellation 7CW 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

Bach 1B

• Cornet

Rim width—

Best suited for

🎻Orchestral playing — large cup for full, dark tone

Mouthpiece B

Conn Connstellation 7CW

• Cornet

General

Rim width—

Best suited for

📋Trumpet players seeking precise matched dimensions

🎶Size 7 (16.42mm); larger cup; fuller lower register; Wide rim; larger rounded inner radius; less bit

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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Bach 1B vs Conn Connstellation 7CW

Playing Characteristics

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What Changes If You Switch?

Which is better?

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