Yamaha SL-48DL vs Yamaha SL-LANDGREN-S
The Yamaha SL-48DL has a wider cup diameter, the Yamaha SL-48DL features a deeper cup, the Yamaha SL-48DL has a larger throat opening.
Cup Diameter
The Yamaha SL-48DL has a cup diameter of 25.25 mm / 0.9941 in compared to 25.11 mm / 0.9886 in on the Yamaha SL-LANDGREN-S — a difference of 0.14 mm / 0.0055 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Yamaha SL-48DL has a deep cup while the Yamaha SL-LANDGREN-S has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Yamaha SL-48DL has a wider throat (6.62 mm / 0.2606 in vs 6.25 mm / 0.2461 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.