Bach 17D vs Schilke 45B
The Schilke 45B has a wider cup diameter, the Schilke 45B features a deeper cup, the Schilke 45B has a larger throat opening.
Cup Diameter
The Schilke 45B has a cup diameter of 24.30 mm / 0.9567 in compared to 24.20 mm / 0.9528 in on the Bach 17D — a difference of 0.10 mm / 0.0039 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Schilke 45B has a medium cup while the Bach 17D has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Schilke 45B has a wider throat (5.95 mm / 0.2343 in vs 5.85 mm / 0.2303 in). 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.
Compare Bach 17D with others
Compare Schilke 45B with others
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