| I have been playing for a few month's on a Curry 3BC. I really don't know the difference between a B and a BC however I do know that a BC the "Chicago" line is based on orchestral mouthpieces. Basically what had to be bought before as a multi piece mouthpiece "rim, cup, backbore,etc." THey are basically the equivalent of a Bach rim plus a B cup which is deeper than the standard C cup plus a 24 throat which has to be special ordered or drilled out after market and all of this is put together into a 1 piece solid mouthpiece. You can e-mail curry with this question and I'm sure you will get a reply. You can find an e-mail on the website and if not just tell me so and I will give one to you. |