Schilke 53 vs Schilke 57
The Schilke 57 has a wider cup diameter.
Mouthpiece A
Schilke 53
• Trombone
Cup diameter26.24 mm / 1.0331 in
Cup depthMedium
Rim width—
Throat diameter5.95 mm / 0.2343 in
Backbore15/64.2344"
Finish—
Material—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Schilke 57
• Trombone
Cup diameter26.52 mm / 1.0441 in
Cup depthMedium
Rim width—
Throat diameter5.95 mm / 0.2343 in
Backbore15/64.2344"
Finish—
Material—
Best suited for
High-volume projection — open throat for power
Cup Diameter
The Schilke 57 has a cup diameter of 26.52 mm / 1.0441 in compared to 26.24 mm / 1.0331 in on the Schilke 53 — a difference of 0.28 mm / 0.0110 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
Throat diameters are essentially identical at 5.95 mm / 0.2343 in, so resistance feel will be comparable.
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.