Bach 15 vs Giardinelli 5M
The Giardinelli 5M has a wider cup diameter, the Bach 15 features a deeper cup, the Giardinelli 5M has a larger throat opening.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Bach 15
• Baritone / Euphonium
Throat diameter5.85 mm
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
vs
Mouthpiece B
Giardinelli 5M
• Baritone / Euphonium
Throat diameter6.00 mm
Best suited for
High-volume projection — open throat for power
Throat Diameter
The Giardinelli 5M has a wider throat (6.00 mm vs 5.85 mm). A wider throat allows more air through, increasing volume and projection but reducing resistance.
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.