TromboneChat

Posted: **Mon Apr 13, 2026 3:39 am**

Hello all, thanks a lot for your inputs. Actually, I've followed the last "exercise" suggested by Sesquitone, and it does appear that my feeling of the low register was wrong. I tried to play a D3 on 6th position with the G-att engaged and I obtained a slightly low Eb instead. Had to lower the position for a proper D. I repeated the scheme down an octave and you guys are right, I do have to lower the positions to obtain good pedals, and therefore, have no more Db2 !

Concerning the valve, it's perfectly adjusted so I won't blame the equipment, but only myself

Here a "proof" that the G-att length is perfect for the D3, down to B2 ( sorry for the tone, I was picking the horn cold)

Thank you all for your help

Posted: **Tue Jun 09, 2026 11:54 am**

Gone fully off the reservation!

Had an 8.8" bass bell spun up for the valve section! I'll mount it next week.

Posted: **Sun Jun 21, 2026 10:02 pm**

I'll snag a photo with it on the horn shortly, but for anyone with an imagination I suppose you can figure out it just looks like a 5/4:tenor trombone lol.

Little guy plays phenomenal! It's a punchy, rich tenor- es que vibe, but when I gas it right colors up into a beautiful bass sound. Crazy fun to play! I'll be bringing it to STS this week, as I know they'll be at least a couple of guys there who will get a kick out of it. That and it's just so ideal for travel. If you plan on attending and want to throw some notes through it please by all means!

Posted: **Fri Jun 26, 2026 9:15 am**

LIBrassCo wrote: Sun Jun 21, 2026 10:02 pm I'll snag a photo with it on the horn shortly, but for anyone with an imagination I suppose you can figure out it just looks like a 5/4:tenor trombone lol.

Little guy plays phenomenal! It's a punchy, rich tenor- es que vibe, but when I gas it right colors up into a beautiful bass sound. Crazy fun to play! I'll be bringing it to STS this week, as I know they'll be at least a couple of guys there who will get a kick out of it. That and it's just so ideal for travel. If you plan on attending and want to throw some notes through it please by all means!

Way to go! Single-thumb-valve minor-third attachment: Eb/C, C/A, Bb/G, G/E, F/D, . . . . TYS.

Posted: **Fri Jul 03, 2026 4:42 pm**

Well, I started doing a thing ....

Posted: **Sat Jul 04, 2026 7:04 am**

LIBrassCo wrote: Fri Jul 03, 2026 4:42 pm Well, I started doing a thing ....

You previously mentioned putting the double-trigger combination in Eb. Can you arrange the plumbing to take either an Eb or D crook? The latter would allow for a shorter stretch between Eb2 in the G-valve 5th position and D2 in 1st.

Posted: **Sat Jul 04, 2026 7:12 am**

Sesquitone wrote: Sat Jul 04, 2026 7:04 am
LIBrassCo wrote: Fri Jul 03, 2026 4:42 pm Well, I started doing a thing ....
You previously mentioned putting the double-trigger combination in Eb. Can you arrange the plumbing to take either an Eb or D crook? The latter would allow for a shorter stretch between Eb2 in the G-valve 5th position and D2 in 1st.

I may go a different route altogether, G/F.

Posted: **Sat Jul 04, 2026 7:32 am**

LIBrassCo wrote: Sat Jul 04, 2026 7:12 am
Sesquitone wrote: Sat Jul 04, 2026 7:04 am
You previously mentioned putting the double-trigger combination in Eb. Can you arrange the plumbing to take either an Eb or D crook? The latter would allow for a shorter stretch between Eb2 in the G-valve 5th position and D2 in 1st.
I may go a different route altogether, G/F.

With the dependent plumbing, that won't give you a "good" C2 or (any) B1! [Actually, I misspoke before: the D double requires a larger stretch between G-valve Eb2 and double-valve D2; but the Eb double requires a larger stretch between B1 and (slide-alone) Bb1. The D double gives you a (non-pedal) Bb1 at the end of the slide.]

Posted: **Sat Jul 04, 2026 7:53 am**

Sesquitone wrote: Sat Jul 04, 2026 7:32 am
LIBrassCo wrote: Sat Jul 04, 2026 7:12 am

I may go a different route altogether, G/F.
With the dependent plumbing, that won't give you a "good" C2 or (any) B1! [Actually, I misspoke before: the D double requires a larger stretch between G-valve Eb2 and double-valve D2; but the Eb double requires a larger stretch between B1 and (slide-alone) Bb1. The D double gives you a (non-pedal) Bb1 at the end of the slide.]

Yeah, I don't care about that. I'm just having some fun.

Posted: **Sat Jul 04, 2026 9:54 am**

LIBrassCo wrote: Sat Jul 04, 2026 7:53 am Yeah, I don't care about that. I'm just having some fun.

How about three different crooks: F (for "traditional" fun), Eb (for continuous chromatics), and D (for that non-pedal Bb1)? [Are you considering trying a matched (larger dual-bore) slide? For even more fun?]

Posted: **Sat Jul 04, 2026 10:04 am**

Sesquitone wrote: Sat Jul 04, 2026 9:54 am
LIBrassCo wrote: Sat Jul 04, 2026 7:53 am Yeah, I don't care about that. I'm just having some fun.
How about three different crooks: F (for "traditional" fun), Eb (for continuous chromatics), and D (for that non-pedal Bb1)? [Are you considering trying a matched (larger dual-bore) slide? For even more fun?]

Nope, I know what those things do, they're boring. I hate convention.

Posted: **Sat Jul 04, 2026 10:26 am**

So an F attachment is not "convention"?

Posted: **Sat Jul 04, 2026 10:49 am**

Sesquitone wrote: Sat Jul 04, 2026 10:26 am So an F attachment is not "convention"?

How many G/F dependent valves on a bass trombone with an 8.8" bell have you seen? Keep in mind I know the answer from literally anyone is going to be zero. Lol!

Posted: **Sat Jul 04, 2026 10:52 am**

Starting with the single (finger-trigger) G attachment on a Bb TENOR trombone (for enhanced slide technique in the lower register), what would be "unconventional" would be to use a shorter slide—say 6 positions in Bb. With the defect made up in a longer bell. This would be a lighter and more nimble slide and give better overall balance. Ideal for beginning students (with short arms) ["hello", Mark McDunn].

If you're using the finger-trigger G attachment on a tenor/bass trombone, you would (presumably) want to fill in (continuously) those missing notes before linking to pedals. Since Bb/G is already (mostly) "unconventional", any of the continuously chromatic dependent tunings would remain so. And, of course, any of the continuously chromatic independent inline tuning would be, too. That's why I opted for Bb/G+E=D; and Bb/G+Eb=Db is another really great combination—a transposition up a P4 from the European tuning of the F contra.

Posted: **Sat Jul 04, 2026 12:19 pm**

Sesquitone wrote: Sat Jul 04, 2026 10:52 am Starting with the single (finger-trigger) G attachment on a Bb TENOR trombone (for enhanced slide technique in the lower register), what would be "unconventional" would be to use a shorter slide—say 6 positions in Bb. With the defect made up in a longer bell. This would be a lighter and more nimble slide and give better overall balance. Ideal for beginning students (with short arms) ["hello", Mark McDunn].

If you're using the finger-trigger G attachment on a tenor/bass trombone, you would (presumably) want to fill in (continuously) those missing notes before linking to pedals. Since Bb/G is already (mostly) "unconventional", any of the continuously chromatic dependent tunings would remain so. And, of course, any of the continuously chromatic independent inline tuning would be, too. That's why I opted for Bb/G+E=D; and Bb/G+Eb=Db is another really great combination—a transposition up a P4 from the European tuning of the F contra.

Eh, I like my idea. It'll be enjoyable, that's all I care about.

Posted: **Wed Jul 08, 2026 5:47 am**

Waiting on a crook, and the silver tube is a placeholder. I want to match the outers to be all brass so everything matches up, but I have limited material on hand, so I'm using some nickel silver to figure out the right lengths. Turns out I'm going to be able to do something awesome for the tuning, there's enough room to do it G/E, and I love the way that'll play out on the slide. That should also be enough to make everyones' heads melt a little

Posted: **Wed Jul 08, 2026 10:16 am**

LIBrassCo wrote: Wed Jul 08, 2026 5:47 am Turns out I'm going to be able to do something awesome for the tuning, there's enough room to do it G/E, and I love the way that'll play out on the slide. That should also be enough to make everyones' heads melt a little

The Bb/G/E tuning is, indeed, awesome. All that minor-third slide dexterity across the bass clef. And you'll have that beautiful robust C2 comfortably on the slide—perfect for transcribed cello suites.

Posted: **Thu Jul 09, 2026 4:41 am**

Sesquitone wrote: Wed Jul 08, 2026 10:16 am
LIBrassCo wrote: Wed Jul 08, 2026 5:47 am Turns out I'm going to be able to do something awesome for the tuning, there's enough room to do it G/E, and I love the way that'll play out on the slide. That should also be enough to make everyones' heads melt a little
The Bb/G/E tuning is, indeed, awesome. All that minor-third slide dexterity across the bass clef. And you'll have that beautiful robust C2 comfortably on the slide—perfect for transcribed cello suites.

Hey! We agreed one one!

I'll have this finished over the weekend. A friend is doing the linkage for me, I don't have the time or patience to deal with that here. Also, I don't envy the work he'll have to do to make it happen, it's gonna be tight! He seems excited for the challenge, lol.

Posted: **Sun Jul 12, 2026 6:53 am**

Mocking up the wrap for length, some of the individual tubes will be changed yet. Have to play it yet but this should be super close.

Posted: **Mon Jul 13, 2026 9:24 am**

Minor progress. All in tune, all the right parts in the right places. Next up I have to leak test, tweak a couple spots, brace, and finish work.

Posted: **Wed Jul 15, 2026 2:44 am**

Bracing all done, leak tested, just have to finish work now. I ended up making the executive decision just plugging into the tuning slide wasn't secure enough, so I made a screw in connection as well. It leaves the G side permanently a hair sharp (fine by me as I ike it a little out of first), but the positive is the linkage because simpler to handle. I'm really stoked for this to be done, the balance in the hand is fantastic, makes the slide feel weightless.

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