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The Trombone ForumHorns, Gear, and EquipmentMouthpieces(Moderators: BGuttman, Doug Elliott) Difference between a Bach 6.5AL, 6.5A, and 6.5AM
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Author Topic: Difference between a Bach 6.5AL, 6.5A, and 6.5AM  (Read 8436 times)
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ottisthetrombonist

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« on: Aug 22, 2012, 04:38AM »

Just out of curiosity, what is the difference? I reall know nothing about mps, so if y'all could be so kind to enlighten me!
Really I'm just wondering. What do all these letters mean?
I mean, I just realized what the numbers and letters mean on horns.
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« Reply #1 on: Aug 22, 2012, 05:57AM »

Bach Mouthpiece Manual.

In general, Bach designations give you a clue about rim diameter and depth, but nothing else.  It's not systematic like Elliot codes.
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daveyboy37

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« Reply #2 on: Aug 22, 2012, 06:30AM »

Based on the manual, it looks like the main differences on the small shank versions are the throat and backbore. The 6 1/2A has the standard small shank throat and backbore, the 6 1/2 AM has the "F" (.257") throat and #413 backbore, and the 6 1/2 AL has the "G" (.261") throat and #420 backbore.

This is somewhat different for the large shank mouthpieces though. In that series.the 6 1/2AM and 6 1/2AL have the same specs, but the 6 1/2A has the full "bass trombone" throat and backbore, .276" throat with #429 backbore.

The rim and cup are all identical I believe.
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« Reply #3 on: Aug 22, 2012, 08:05AM »

I can share my experience with the the AL and AM...

In the early 90's (during college) my prof pushed me from a Schilke 51B to the 6.5AL.  It just never worked.  Even after extensive playing and time to adapt it lacked focus and clarity for me.  I tried the 6.5 AM and it worked well for me from the first note. 


My best suggestion for you  -->  Try all of them back to back and decide from there.  Have someone you trust and knows trombone to help with a blindfold test.  Play what works.  :D 
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« Reply #4 on: Aug 22, 2012, 09:18AM »


Your switching to a 5G  so don't worry about it!!!   Evil
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daveyboy37

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« Reply #5 on: Aug 22, 2012, 09:22AM »

I didn't switch to a 5G until College. I was all-state two years in HS, so I don't think the 6 1/2AL held me back. I did audition with a king 3b though.
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David Sullivan
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« Reply #6 on: Aug 22, 2012, 09:25AM »


Daveboy.....not dissing the 61/2 but in another port otis has said she is switching to the 5G size!
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ottisthetrombonist

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« Reply #7 on: Aug 22, 2012, 10:06AM »

Yes. The 5G is more comfortable for me. My friend walked into rehearsal one day, said try ou my new mp, put it in my horn, and told me to play. I warmed up. I loved it. He told me it was a 5G and said I could use it for a week because he wasn't eating his large bore until then and was playing a small bore. I loved the mp though. It was basically a blind test.
To be quite honest, I don't know anything about mps. I just saw a 6.5A online and thought it was a typo. I'm just generally curious about the whole thing.
But thanks for your thoughts everyone! I feel more knowlagable about the whole thing!
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« Reply #8 on: Jun 14, 2014, 01:28AM »

hi!

Has anyone played a 6 1/2A?
I understand, that it has bigger throat, does that mean that it will have better low range than 6 1/2 AL?
I'm interested in it because there are few at Dillons store, so I can buy it and get it to Latvia!
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heinz gries

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« Reply #9 on: Jun 14, 2014, 02:55AM »

hi!

Has anyone played a 6 1/2A?
I understand, that it has bigger throat, does that mean that it will have better low range than 6 1/2 AL?
I'm interested in it because there are few at Dillons store, so I can buy it and get it to Latvia!

the 6 1/2A have the standart Bach throat for small shank pieces 5,8 mm
the 6 1/2AM have a 6,53mm throat and the 6 1/2AL a 6,63mm throat
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« Reply #10 on: Jun 14, 2014, 05:01AM »

the 6 1/2A have the standart Bach throat for small shank pieces 5,8 mm
the 6 1/2AM have a 6,53mm throat and the 6 1/2AL a 6,63mm throat

forgot to say that I'm interested in large shank version!
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« Reply #11 on: Jun 14, 2014, 05:39AM »

Quote
My friend walked into rehearsal one day, said try ou my new mp, put it in my horn, and told me to play. I loved it.

Ewww germs!
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« Reply #12 on: Jun 14, 2014, 06:38AM »

forgot to say that I'm interested in large shank version!

Then you are right.Same rim and cup as No. 61⁄2A small shank tenor trombone,
but with full bass trombone throat (7mm) and backbore for a rich,
compact sound of large volume.
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« Reply #13 on: Jun 14, 2014, 11:04AM »

Your switching to a 5G  so don't worry about it!!!   Evil

Heh +1  :)
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« Reply #14 on: Jun 14, 2014, 12:02PM »

hi!

Has anyone played a 6 1/2A?
I understand, that it has bigger throat, does that mean that it will have better low range than 6 1/2 AL?
I'm interested in it because there are few at Dillons store, so I can buy it and get it to Latvia!
I use a 6 1/2A small shank and I really like it. I find it is quite good in all registers. I have a large shank version and I don't feel that comfortable with it. It seems to backup on me. I have some friends who have tried it and they think it's great. I'm using a 4G on my large shank Trbns. That fits me better.
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« Reply #15 on: May 12, 2017, 07:59AM »

I can share my experience with the the AL...
Even after extensive playing and time to adapt it lacked focus and clarity for me...
Ditto
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Bone Appetit
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« Reply #16 on: May 13, 2017, 06:52AM »

Bill Watrous uses the AM for his 36
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Trombocholik

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« Reply #17 on: May 13, 2017, 12:34PM »

Bill Watrous uses the AM for his 36

I thought Watrous plays Bach 16M and Mt. Vernon 11C. Don't know
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« Reply #18 on: May 13, 2017, 12:37PM »

I thought Watrous plays Bach 16M and Mt. Vernon 11C. Don't know

I would be surprised if he didn't own more than one trombone.
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« Reply #19 on: May 13, 2017, 01:44PM »


I would be surprised if he didn't own more than one trombone.


It's his style and his sound concept. I can't imagine it on a Bach 36.(IMHO)
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