Larry Gianni

Hello,

I was asked a question by a prominent player today concerning Bach backbores and his lack of knowledge of the Bach backbore numbering system.

He is new to the “threaded” backbore concept and has always played the backbore that the Bach factory suggested and had sent with the rim/cup of his choice.

I have my opinions on the subject, but I told him I would ask my esteemed colleges on the TM site to either validate or “tear apart “my long held concepts.

He told me he went to the Selmer site and said " Well, a # 24 comes with an A cup, which is described as bigger (than what?), darker (than what?) symphonic and a V cup comes with a # 25 which also list " big " as a description along with a 87 ( big, free blowing ) so what gives"

Simply list biggest to smallest:

24
7
3
117
87
76
41
57
25

Plus any others not listed.

If you can give a personal description after the backbore number, so much the better and I will forward every and all determinations to him. He asked I didn’t reveal his name, but it’s an older “household one “and you would be surprise how little some top named players know about the gear they use.

Larry

Note to Bach Trumpet Moderators;

I asked this question in the “ Bach Trumpet “ forum because I hope it would get more viewings and more diverse opinions then in the “ All - Encompassing “ mouthpiece forum, but if you feel it belongs in the mouthpiece section , I’ll understand if it gets moved.

DrunkIQ

the best way to show him is with the kanstul backbore comparer...

this way you can show two models on top of themselves and see the differece.... another way would be to compare each of their backbores using this web page with the schilke numbering system - that may make more sense for most people....

here is the link:

http://www.kanstul.net/mpcJN/Compare...ompareIEbb.HTM

-marc

Larry Gianni

Trumpetmikey,

Got an opinion on these backbores. ?

Larry

Mikey

Yes, I will add my own opinion on this, but I need soem time. Hopefully this weekend.

Mike

romey1

out

dbacon

I agree with romey completely. Mark Curry makes the best Bach mouthpiece, period.

Larry Gianni

Hi,

Mark Curry does make exceptional mouthpieces, that for sure.

OK, back to my original question ( including the
#10 BB , which I did leave out ), what do you think.

Remember, this question is about screw-type backbores ( screwed in to on a custom rim and cup ) 72 throat. All the Bach backbores all made and available at Kanstul's. My friend is not thinking Elkhart , Ind - but Anaheim, Ca as far a getting them.

Larry

AJcarter

I thought Kanstul's mouthpiece comparator only compared rim and cup sizes, not back bore. I am also looking for information on Bach back bores, as I have an extra 3C I'd like to open up some.If I find any useful information I will report back directly.

rowuk

AJ,
when you open up the mouthpiece, you destroy the playing characteristics. The cup, throat and backbore have to be in sync with one another to get a good response. A mismatch lowers the efficiency, makes the slotting worse and can ruin the intonation of the mouthpiece/horn combination.

Schwab

I disagree, you don't destroy the playing characteristics, you get different characteristics. If what you say is true, so many orchestral players wouldn't be using mouthpieces with 24 backbores, only standard on A cups. Nor would Michael Sachs be playing a 1.5C with a 117 backbore, etc.

The Warburton line would not be so popular, with their interchangeable backbores, and Kanstul wouldn't have a market for their threaded copies of Bach backbores.