When I purchased my bass it wasn't in playable shape. The octave mechanism was a bit tweaked and needed some work. After a some time with the horn my excitedly called to tell me the horn was playing and sounds like a champ. He played it for me with a Selmer S-80 baritone mouthpiece. I though it sounded okay but something was missing. My tech hadn't noticed the monster vintage bass mouthpiece hiding deftly in the corner of the case so he play tested with what he had on hand. When I played it with my Baritone S-80 I couldn't get the response to work and the intonation was all over the map. Following that i defaulted to the vintage piece in the case and notice that a few notes seemed wonky.
On a whim, I bought a Selmer Bass Mouthpiece for 50% off on ebay brand new in the box. On a casual examination it looked exactly like the the Baritone S-80 except for for the engraving "Saxo Basse"on the table. On closer inspection the difference was huge. After a couple hours with the bass piece I don't think I'll be using the vintage piece ever again.
First, the similarities:
- Exterior dimensions are identical
- Baritone ligatures fit this perfectly.
- Tip opening charts are identical (so i'm told)
- The chamber is much larger on the bass
- Baritone has a square window into the chamber
- Bass has slightly scooped sidewalls vs straight baritone walls
- Bass has a slightly wider tip width for bass reeds though baritone work as well
- The bass has a larger back bore (shank opening)