Conn Dual Bore Mouthpiece Choice

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Buffalospiritgathering
Posts: 18
Joined: Apr 26, 2025

by Buffalospiritgathering » (edited 2025-09-12 9:03 p.m.)

Hello!

I have recently acquired a 1928 Conn 76h that's a .500/.525 dual bore straight horn. I <3333 love it, but the Yamaha 48 I use for everything doesn't slot right!

The Yamaha Nils Landgren is a 48 with a shank designed for dual bores, but in the unlikely event that doesn't work out, what are my other options? Dual Bore is tricky with the slotting.
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tbonesullivan
Posts: 1959
Joined: Jul 02, 2019

by tbonesullivan »

[quote="Buffalospiritgathering"]Hello!

I have recently acquired a 1928 Conn 76h that's a .500/.525 dual bore straight horn. I fucking love it, but the Yamaha 48 I use for everything doesn't slot right!

The Yamaha Nils Landgren is a 48 with a shank designed for dual bores, but in the unlikely event that doesn't work out, what are my other options? Dual Bore is tricky with the slotting.[/quote] I seem to recall Doug Elliott designing some shanks specifically for Dual Bore Horns, though I don't know if he had one specifically for .500-.525.
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dukesboneman
Posts: 935
Joined: Apr 02, 2018

by dukesboneman »

I used to have a Conn 32H , also 500/522 bore and My Mount Vernon7C worked fine in it.

Could you post a picture of the horn ? I never knew they made another horn with that configuration.
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Posaunus
Posts: 5018
Joined: Mar 23, 2018

by Posaunus »

[quote="tbonesullivan"]<QUOTE author="Buffalospiritgathering" post_id="284920" time="1757083765" user_id="19419">
The Yamaha Nils Landgren is a 48 with a shank designed for dual bores, but in the unlikely event that doesn't work out, what are my other options? Dual Bore is tricky with the slotting.[/quote] I seem to recall Doug Elliott designing some shanks specifically for Dual Bore Horns, though I don't know if he had one specifically for .500-.525.
</QUOTE>
I was not aware that the Yamaha Nils Landgren mouthpiece was designed for dual bore.

Doug does not currently list a shank designed for dual-bore 0.500"/0.525" bore trombones.

http://www.dougelliottmouthpieces.com/tenortrb.html
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harrisonreed
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Joined: Aug 17, 2018

by harrisonreed »

Why the profanity?
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Burgerbob
Posts: 6327
Joined: Apr 23, 2018

by Burgerbob »

[quote="harrisonreed"]Why the profanity?[/quote]

Why not?
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Doug_Elliott
Posts: 4155
Joined: Mar 22, 2018

by Doug_Elliott »

[quote="Posaunus"]<QUOTE author="tbonesullivan" post_id="284924" time="1757086201" user_id="7063">
I seem to recall Doug Elliott designing some shanks specifically for Dual Bore Horns, though I don't know if he had one specifically for .500-.525.[/quote]
I was not aware that the Yamaha Nils Landgren mouthpiece was designed for dual bore.

Doug does not currently list a shank designed for dual-bore 0.500"/0.525" bore trombones.

http://www.dougelliottmouthpieces.com/tenortrb.html
</QUOTE>
I make lots of stuff that I don't list...

My unlisted backbore 3.5 is for 500/525
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Buffalospiritgathering
Posts: 18
Joined: Apr 26, 2025

by Buffalospiritgathering »

Sweet, Doug! I've been having some glitching with the message system. I received the message that I sent you, back three times addressed from you! Lol
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Buffalospiritgathering
Posts: 18
Joined: Apr 26, 2025

by Buffalospiritgathering »

[quote="harrisonreed"]Why the profanity?[/quote]

Obligatory from a bred New Yorker. Fuggedaboutit.
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WGWTR180
Posts: 2152
Joined: Sep 04, 2019

by WGWTR180 »

[quote="Buffalospiritgathering"]<QUOTE author="harrisonreed" post_id="284931" time="1757090358" user_id="3642">
Why the profanity?[/quote]

Obligatory from a bred New Yorker. Fuggedaboutit.
</QUOTE>
I work with and know many New Yorkers who don't drop the F bomb on a public forum where people of all ages check in. Besides you might be from Buffalo going by your user name. Does that even count as New York? LOL
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Buffalospiritgathering
Posts: 18
Joined: Apr 26, 2025

by Buffalospiritgathering »

Delete post please!!
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WGWTR180
Posts: 2152
Joined: Sep 04, 2019

by WGWTR180 »

[quote="Buffalospiritgathering"]Delete post please!![/quote]

But why? It's just getting good. :cool:
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cgaiii
Posts: 12
Joined: Jul 22, 2025

by cgaiii »

[quote="dukesboneman"]I used to have a Conn 32H , also 500/522 bore and My Mount Vernon7C worked fine in it.[/quote]
Though I am newly coming back to trombone, particularly the dual bore 32H I recently acquired, I have had no problem playing it with a Schilke 47. I tried a couple of others, Bach 6.5AL, 1939 Bach 12 that came with the horn, larger Schilkes (51 (which I use on my bass trumpet), 52), but I have found that of this limited sample, I like the Schilke 47 the best. May learn differently in the future as I get more precise in my playing, but it is another point on the graph.

I would be very curious to hear more about how the various mouthpiece parameters affect slotting, etc., particularly on these dual bore trombones.
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dukesboneman
Posts: 935
Joined: Apr 02, 2018

by dukesboneman »

On my weekly Friday Night Big Band gig, one of the guys had just bought a 32H and brought it to the gig.

It played beautifully , just as I remembered .

Effortless upper range and some meat on the bottom of the horn . A little front heavy but that`s OK

Now I`m looking around the closet and thinking about what can sell and pick one up? Hmmmmm....?
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Doldom
Posts: 139
Joined: May 12, 2018

by Doldom »

Doug's 3.5 shanks are great.!

I had Yamaha 0.500-0.525, 8 inch bell intermediate horn and 4 shank seems like a bit too open, while 3 seems like a little bit restricting, maybe because the Yamaha had large bore-ish neckpipe and bell throat. And 3.5 was better than 3 or 4.

Although I sold the horn because the horn itself is somewhat dull. Thick bell construction, maybe because it is designed for school use, and that dullness is which I didn't like. I feel sorry that Yamaha don't produce pro level model with 0.500-0.525.

I have no idea whether the 3.5 work well with other duo bore horns though. Especially for Conns, I assume that neckpipe and bell throat might have been designed smaller than large bore counterparts. (which might be good thing for 3.5 shank, or not)
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Matt_K
Posts: 4809
Joined: Mar 21, 2018

by Matt_K »

Yep, 2nd the 3.5. Works great in all the 500/525 horns I've put it in. Also was swapping between a 3 and 4 depending on the gig but the 3.5 I haven't switched once. FWIW I use mine in a custom King 500/525 but I suspect it would also work well in the 32H. The bell throat is not too dissimilar on mine from the Conns and I use a 32H pipe in my King.
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Trombola2112
Posts: 61
Joined: Oct 05, 2022

by Trombola2112 »

I'll also support the use of the DE 3.5 shank. I use it on my Yamaha 456G with a E cup. Tried it against the 3 and 4 and like others found the 3 a tad tight and the 4 a bit open.
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Doug_Elliott
Posts: 4155
Joined: Mar 22, 2018

by Doug_Elliott »

I’m glad to hear the D3.5 and E3.5 are working well on .500/.525 dual bores.

That’s what I designed them for, but I don’t have a .500/.525 to try myself.
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Digidog
Posts: 483
Joined: Dec 13, 2018

by Digidog »

[quote="dukesboneman"]Now I`m looking around the closet and thinking about what can sell and pick one up? Hmmmmm....?[/quote]

In the guitar world that's GAS - Gear Acquisitioning Syndrome - and something that has to be constantly negotiated to keep in check. I know of some non-professional guitar guys who owns around 50-100 guitars just for the sake of it, but I've never heard of a corresponding thing with trombones.

What's the most trombones you've heard that anyone owns? I once knew a now passed semi-pro trombonist who owned like thirty different horns and I know a trumpeter who owns about sixty trumpets, and high as those numbers are they are not close to a hundred.
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Buffalospiritgathering
Posts: 18
Joined: Apr 26, 2025

by Buffalospiritgathering »

Well, I acquired this trombone from the largest hoarding of trombones incident I have ever heard of. This guy was in Columbus, Ohio and had like... 300+ horns in a basement... Wasn't even a player. He was renting too! He left everything and it took the guy who sold it to me... Like 8 months to clear it out!

So I did some research, and Doug's lessons made the biggest change in my playing career of any lesson I have ever had, but I can't afford the whole DE setup that I want...

I asked around and managed to acquire myself a Remington Constellation that was paired with several other dual bore horns and it plays very well! I tend to play pretty bright, and the mouthpiece/bone combo is great for me! And at $30, now I am pretty convinced that this combo works for now. I could definitely get a bigger sound, but I at least can play this combo now!