How does cup depth compare between Conn Connstellation 3BW and Marcinkiewicz CH EF 21J. Cox?

Both mouthpieces share a very deep cup depth, so the sound character from depth alone will be very similar.

Conn Connstellation 3BW vs Marcinkiewicz CH EF 21J. Cox

Name: Marcinkiewicz CH EF 21J. Cox
Brand: Marcinkiewicz

Both mouthpieces share similar core dimensions — the differences are in the details.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material

The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.

Mouthpiece A

Conn Connstellation 3BW

• French Horn

Orchestral

Throat diameter—

Best suited for

📋French horn players

🎶French horn size 3; smaller cup; more compact tone; Wide rim; larger rounded inner radius; less bite

Mouthpiece B

Marcinkiewicz CH EF 21J. Cox

• French Horn

Throat diameter4.57 mm / 0.1799 in

Best suited for

🎻Orchestral playing — large cup for full, dark tone

📣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.

Open in interactive tool + Add third mouthpiece Conn Connstellation 3BW details Marcinkiewicz CH EF 21J. Cox details Conn Connstellation 3BW equivalents Marcinkiewicz CH EF 21J. Cox equivalents

Conn Connstellation 3BW vs Marcinkiewicz CH EF 21J. Cox

Playing Characteristics

What Do These Model Names Mean?

What Changes If You Switch?

Which is better?

Compare Conn Connstellation 3BW with others

Compare Marcinkiewicz CH EF 21J. Cox with others

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