Which has a bigger cup — Bach 18 or Giardinelli C12?

The Giardinelli C12 has a cup diameter of 17.50 mm / 0.6890 in compared to 16.15 mm / 0.6358 in on the Bach 18 — a difference of 1.35 mm / 0.0531 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 18 and Giardinelli C12?

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

Bach 18 vs Giardinelli C12

Name: Giardinelli C12
Brand: Giardinelli

The Giardinelli C12 has a wider cup diameter, the Giardinelli C12 has a larger throat opening.

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

Surface plating or treatment (e.g. silver plate, gold trim). Affects feel, durability, and appearance.

Mouthpiece A

Bach 18

• French Horn

Finish—

Best suited for

🎵All-round versatile — balanced cup for general playing

📣High-volume projection — open throat for power

Mouthpiece B

Giardinelli C12

• French Horn

Finish—

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.

Open in interactive tool + Add third mouthpiece Bach 18 details Giardinelli C12 details Bach 18 equivalents Giardinelli C12 equivalents

Bach 18 vs Giardinelli C12

Playing Characteristics

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What Changes If You Switch?

Which is better?

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