The Gen 2 31G tuba mouthpiece is slightly larger in diameter than the Wedge SG or Schilke Geib. Wedge G mouthpieces have a Geib style cup similar to the Schilke Geib, Bach 7, Bach 12, and Yamaha 67C4 mouthpieces. The cup shape is a modified funnel, which is slightly more bowl shaped than a Helleberg style cup. The Geib cup sounds is less dark than a Helleberg cup, with a bit more projection.
The Gen 2 mouthpieces have a second generation Wedge design that incorporates elements from our highly successful Gen 2 high brass rim. They have an accentuated oval rim shape that extends right down to the base of the cup. This unique oval cup shape amplifies the effect of the Wedge rim, providing greater responsiveness and more core to the sound compared to a conventional round cup of similar depth and volume.
ID: 1.31 inches at .05 inches into the cup (33.27 mm)
OD: 1.91 inches (48.51 mm)
Throat: .325 inches (8.26 mm)