The Bach 5G and Schilke 51 have been the standard workhorses for large bore tenor trombones for many years.
Scans of different specimens of the Bach 5G show an ID of between .101 and 1.00 inches, depending on the specimen. Schilke 51 rims are more consistent at 1.01 inches. The Yamaha comes in closer to 1.00 inches.
The Wedge 101G is a good replacement for the larger 5G and Schilke 51 mouthpieces. It does have a slighty deeper cup than the others. However, the 101G is not as deep as the Schilke 51D.
Most players switching to the 101G will find that their range and endurance impoves despite the slightly deeper cup, and that the low end is also significantly better.
Material - These mouthpieces can be made in either Delrin or Acrylic plastic. Here is a comparison of their characteristics:
- Feels softer on the chops because it has more give than metal. This is a great advantage for players with braces.
- Not as slippery as silver, giving more grip.
- Added grip makes Delrin mouthpieces feel smaller than their metal counterparts with the same size designation.
- Not as smooth as metal, so some players may feel slight chop irritation for the first day or two while they adjust.
- More comfortable to play in cold weather because they feel warm on the chops.
- Plastic mouthpieces are more responsive than brass, making soft entries more secure.
- Articulation less crisp with less point at the front of the note compared to brass.
- Darker sound than brass.
- Less core in the sound compared to brass.
- Feels softer than brass but less soft and Delrin on the chops.
- Less slippery than metal but more slippery than Delrin.
- Grip intermediate between Delrin and silver.
- Feel slightly smaller than the metal counterparts.
- Smoother than Delrin, very similar to silver.
- Comfortable to play in cold weather.
- Responsive to soft articulation.
- Articulation is clearer than Delrin, very similar to metal.
- Sound is slightly darker than brass and brighter than Delrin.
- More core in the sound than Delrin, but not as much core as metal.