6 3/4C “megatone”

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AndreaAndreoli
Posts: 61
Joined: Oct 23, 2018

by AndreaAndreoli »

Hello,

I would like to try a kind of 6 3/4C with a larger throat and maybe in a heavy blank, like megatone’s.

Seems that they do the 7c megatone but not the 6 3/4C.

I find that the regular 6 3/4 has a too tight throat for me.

Also I would like to have a 25.4 rim instead of the 25…

Do you think there is a similar piece on the market, without going to order a custom one from Bach?

Maybe Greg black 6C do the trick?

Doug Elliot 100 C+ ?

Thanks
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AtomicClock
Posts: 1094
Joined: Oct 19, 2023

by AtomicClock »

Bach 5GS?
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Doug_Elliott
Posts: 4155
Joined: Mar 22, 2018

by Doug_Elliott »

MT or LT 100 rim, C or C+ cup, backbore depends on the horn.

Any of those combination would be close. Fine tune to your horn and expectations.
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harrisonreed
Posts: 6479
Joined: Aug 17, 2018

by harrisonreed »

[quote="AndreaAndreoli"]Hello,

I would like to try a kind of 6 3/4C with a larger throat and maybe in a heavy blank, like megatone’s.

Seems that they do the 7c megatone but not the 6 3/4C.

I find that the regular 6 3/4 has a too tight throat for me.

Also I would like to have a 25.4 rim instead of the 25…

Do you think there is a similar piece on the market, without going to order a custom one from Bach?

Maybe Greg black 6C do the trick?

Doug Elliot 100 C+ ?

Thanks[/quote]

You might want the Nils Landgren. It's not a heavy blank, but hits the 6 3/4C and open throat bit.

<LINK_TEXT text="viewtopic.php?p=127013#p127013">https://trombonechat.com/viewtopic.php?p=127013#p127013</LINK_TEXT>
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ithinknot
Posts: 1339
Joined: Jul 24, 2020

by ithinknot »

DE C+ is great

Wick 7CS is also what you're describing... 25.4mm rim, larger throat than Bach Cs (6.25mm, same as the Nils)
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Posaunus
Posts: 5018
Joined: Mar 23, 2018

by Posaunus »

Yamaha "Nils Landgren": Cup I.D. ~25.1mm (0.989"); Throat 6.25mm (0.246")

Not a bad place to start. Available. Affordable
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Trombo
Posts: 143
Joined: Dec 11, 2020

by Trombo »

[quote="AndreaAndreoli"]Hello,

I would like to try a kind of 6 3/4C with a larger throat and maybe in a heavy blank, like megatone’s.

Seems that they do the 7c megatone but not the 6 3/4C.

I find that the regular 6 3/4 has a too tight throat for me.

Also I would like to have a 25.4 rim instead of the 25…

Do you think there is a similar piece on the market, without going to order a custom one from Bach?

Maybe Greg black 6C do the trick?

Doug Elliot 100 C+ ?

Thanks[/quote]

Wich makes the 7cs Heritage if you like heavy blanks.

Bach makes 6 3/4c Megatone. Delfayo Marsalis played this one.
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AndreaAndreoli
Posts: 61
Joined: Oct 23, 2018

by AndreaAndreoli »

[quote="Doug Elliott"]MT or LT 100 rim, C or C+ cup, backbore depends on the horn.

Any of those combination would be close. Fine tune to your horn and expectations.[/quote]

Thank you Doug!
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AndreaAndreoli
Posts: 61
Joined: Oct 23, 2018

by AndreaAndreoli »

Thank you for all this super useful replies!
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harrisonreed
Posts: 6479
Joined: Aug 17, 2018

by harrisonreed »

How about either the 6.5AL megatone or the regular 6.5AM?

The 6.5AL megatone has the blank and rim diameter you want (25.4mm), and the throat is wider than the normal .261 throat on the non-megatone 6.5AL. They don't give an exact width though.

The AM is the same thing but even larger in the throat and backbore.
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Trav1s
Posts: 473
Joined: Jul 26, 2018

by Trav1s »

[quote="ithinknot"]DE C+ is great

Wick 7CS is also what you're describing... 25.4mm rim, larger throat than Bach Cs (6.25mm, same as the Nils)[/quote]

For sure! C+ is my choice for .485/500 horns
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AndreaAndreoli
Posts: 61
Joined: Oct 23, 2018

by AndreaAndreoli »

[quote="harrisonreed"]How about either the 6.5AL megatone or the regular 6.5AM?

The 6.5AL megatone has the blank and rim diameter you want (25.4mm), and the throat is wider than the normal .261 throat on the non-megatone 6.5AL. They don't give an exact width though.

The AM is the same thing but even larger in the throat and backbore.[/quote]

Thank you! Not sure that the AL or AM cup would work for me… looking for a C cup indeed

Btw does a 6 3/4C megatone exists?

Cause it doesn’t show up on Bach catalogue, but some cats told me that they had it as a custom order…

But really never seen around before
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ngrinder
Posts: 294
Joined: Apr 24, 2018

by ngrinder »

Email Jim New and ask him for an NG.2 model, it might be close to what you're looking for. I've been working with Jim for over a year now, trying to mate a 6.5AL rim to a 6-3/4 ish body. I have a bunch of prototypes and this latest one works pretty well. I think we're at a .240 throat, but the throat/slope of the throat is what I need to work on next.
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AndreaAndreoli
Posts: 61
Joined: Oct 23, 2018

by AndreaAndreoli »

[quote="ngrinder"]Email Jim New and ask him for an NG.2 model, it might be close to what you're looking for. I've been working with Jim for over a year now, trying to mate a 6.5AL rim to a 6-3/4 ish body. I have a bunch of prototypes and this latest one works pretty well. I think we're at a .240 throat, but the throat/slope of the throat is what I need to work on next.[/quote]

Thank you, I check it out
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dcslideman
Posts: 134
Joined: Mar 23, 2022

by dcslideman »

[quote="harrisonreed"]How about either the 6.5AL megatone or the regular 6.5AM?

The 6.5AL megatone has the blank and rim diameter you want (25.4mm), and the throat is wider than the normal .261 throat on the non-megatone 6.5AL. They don't give an exact width though.

The AM is the same thing but even larger in the throat and backbore.[/quote]

actually the AM is smaller in throat and backbore and has a .257 "F" throat. Here is a snap of the Bach catalogue:

User image
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Posaunus
Posts: 5018
Joined: Mar 23, 2018

by Posaunus »

Bach Trombone Mouthpieces (nominal dimensions from the Bach mouthpiece catalog)

SMALL SHANK:

6¾C: Cup I.D. 25.00mm; Throat 5.85mm; Backbore #402

6½A: Cup I.D. 25.40mm; Throat 5.85mm; Backbore #402

6½AL: Cup I.D. 25.40mm; Throat 6.63mm; Backbore #420

6½AM: Cup I.D. 25.40mm; Throat 6.53mm; Backbore #413

6: Cup I.D. 25.50mm; Throat 5.85mm; Backbore #402

LARGE SHANK:

6½A: Cup I.D. 25.40mm; Throat 7.00mm; Backbore #429

6½AL: Cup I.D. 25.40mm; Throat 6.63mm; Backbore #420

6½AM: Cup I.D. 25.40mm; Throat 6.53mm; Backbore #413

Note that the Small Shank 6½A has a smaller throat than the 6½AL and 6½AM,

whereas the Large Shank 6½A has a larger throat than the 6½AL and 6½AM.