Bruno Tilz 305-7 vs Schilke 47C4
The Schilke 47C4 has a wider cup diameter, the Schilke 47C4 has a larger throat opening.
Cup Diameter
The Schilke 47C4 has a cup diameter of 25.10 mm / 0.9882 in compared to 25.00 mm / 0.9843 in on the Bruno Tilz 305-7 — 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
Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
The Schilke 47C4 has a wider throat (5.95 mm / 0.2343 in vs 5.80 mm / 0.2283 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 Bruno Tilz 305-7 with others
Compare Schilke 47C4 with others
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