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FS: Gronitz Full Double Double Bell Euphonium

Posted: Tue Jan 10, 2017 8:17 pm
by slipmo
A unique one of a kind instrument, built by Gronitz in Germany, as a proof of concept for one of their clients who was writing a paper on the intonation of brass instruments. This is a FULL double Bb/E double bell euphonium (or a true Double Double). That means that there is a change valve and you can switch from Bb to E (can get Eb if you pull the tuning slide on that side all the way out) which in turn switches you from the tenor bell (Bb) to the alto bell (E/Eb). The idea was to be able to create an instrument that could play each note perfectly in tune by using either side of the horn for the ideal intonation... which works if you want to learn a new fingering system... or you can just play it like a Bb euph and a E/Eb alto all in one horn. Takes a standard small shank trombone mouthpiece. $4500

Craftsmanship is stunning. Everything is custom made and hand bent. The valves are custom 8 port rotary valves from Meinlschmidt (like giant double french horn valves).

I would imagine that no maker in the world would be willing to recreate something like this ever again unless you paid them an unreasonable amount of money. Here's your change to get something special, made by one of the most respected makers.

Interested in it? Email me bassclef13@gmail.com

With that, here are some pics. Enjoy :tuba:

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Re: FS: Gronitz Full Double Double Bell Euphonium

Posted: Tue Jan 10, 2017 8:44 pm
by slipmo
price updated

Re: FS: Gronitz Full Double Double Bell Euphonium

Posted: Tue Jan 10, 2017 9:09 pm
by LowBrassNYC
FYI, posting a price on the ad is now a requirement.

Re: FS: Gronitz Full Double Double Bell Euphonium

Posted: Wed Jan 11, 2017 4:06 am
by Kirley
Wow! That is cool.
Beautiful horn.

How are the valves arranged?
Standard 123 in the right hand?
Left hand 1 appears to be the change valve.
Is left hand 2 a normal 4th valve?
And left hand 3 a flat whole step?

Re: FS: Gronitz Full Double Double Bell Euphonium

Posted: Wed Jan 11, 2017 12:34 pm
by barry grrr-ero
This is the only way that a true double tuba could really work, which would require a heavy duty saddle type stand. It would need to be 'modular' with two cases, I imagine. If this could be done, it would probably make more sense to have an independent set of left hand valves for the smaller side, than to try to have double-decker rotors (or pistons).

Re: FS: Gronitz Full Double Double Bell Euphonium

Posted: Wed Jan 11, 2017 5:48 pm
by slipmo
Kirley wrote:Wow! That is cool.
Beautiful horn.

How are the valves arranged?
Standard 123 in the right hand?
Left hand 1 appears to be the change valve.
Is left hand 2 a normal 4th valve?
And left hand 3 a flat whole step?
Right hand is standard 123
Left hand is change valve (E/Eb small bell, Bb big bell), 2 is normal 4th valve (1+3), 3 is a flat 2 step (flat 2+3)

Re: FS: Gronitz Full Double Double Bell Euphonium

Posted: Thu Jan 12, 2017 1:35 pm
by DouglasJB
I would love to see a video of this thing in action sometime