Replies to This Discussion

Permalink Reply by BUGGY (C) on November 16, 2011 at 8:41am

nice idea!

Michael Carnright said:

I think what could be wild would be to get an old speaker like from a stereo, remove the coil and magnet and connect the sound cone to the bar-bridge arrangement. I think It might sound pretty good. Same principle but with a paper cone and no horn instead of a metal cone and a horn.

Old Lowe said:

I saw these a long time ago and I have wanted one ever since never seen a guitar version only fiddles.

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Permalink Reply by BUGGY (C) on November 16, 2011 at 8:42am

mee 2

Roosterman said:

That is awesome! Il be in the shed....

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Permalink Reply by Keni Lee Burgess on November 16, 2011 at 10:39am

Glad to hear someone is taking this project on. I talked about it a while back. Here are more pics.

 http://www.notecannons.com/index.html 

I look forward to seeing and hearing your discoveries. Enjoy your build, Keni Lee

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Permalink Reply by Keni Lee Burgess on November 16, 2011 at 10:40am

Scroll down on the left side and click Stroviols

 

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Permalink Reply by Andrew Fowle on November 16, 2011 at 1:31pm

I'm glad to see this old thread (nearly three years old!) revived. Its reminded me of the whole "whacking a horn in the side of a box" dillema. Would a horn that is not in contact with the bridge do much (or anything) for the tone or volume?

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Permalink Reply by Randy S. Bretz on November 17, 2011 at 12:46am

http://www.strohviolin-shop.com/en/index.php

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Permalink Reply by Order99 on November 17, 2011 at 12:41pm

Here's a really inexpensive Stroh-type I found a while back while idly surfing:

http://www.instructables.com/id/Reclaimers-Stick-Fiddle/

I think what really makes it work is the 'rocking bridge' design feeding directly into the styrofoam or paper 'horn'...I wonder if anybody in that band tried a tin can or bicycle horn on on one of those yet?

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Permalink Reply by Mungo Park on November 18, 2011 at 5:34pm

Think something like a tone arm on a turntable and you will have the idea, well if you are old enough to remember what a record is, Wheeeehew next somebody will tell me it is like winding watch whatever that is.

 More like the really old jobs with the horn and the dog. Now even I don't know what I am talking about, you will need some dead clown tools to build it. Love to see it when it is finished.

                 Cheers Ron

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Permalink Reply by Randy S. Bretz on November 18, 2011 at 11:47pm

It`s all in the resonator diaphram that makes the cool sound plus having the horn to push that sound out. I`ve been researching this for awhile now even back the 3 years ago when the idea first came up. The original Stroh has a patent on the design [ 1902 ]. Inside the resonator diaphram there`s a thin piece of meca which acts like a huge kazoo when the vibration of the strings pass down through the metal bridge connected to a bolt that connects the resonator together. Then the sound comes out the horn, some variations on the Stroh used more then one horn. I`ve also seen where the resonator diaphram was enclosed in the wood frame of the instrument, which might help with condensing the sound  better. I`m thinkin 2 small alum. pot lids with some kind of disc in the middle to act as the diaphram might work for the resonator. Barefoot Cajun suggested to me that a model A ford horn might work as the diaphram and with the horn already connected. I even researched violin luthiers looking for parts for a Stroh for the resonator diaphram...no luck. So who ever gives this idea a try i wish them all the luck, I`m sticking with figuring out the resonator diaphram first then the rest of the build will come easy.

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Permalink Reply by BUGGY (C) on November 19, 2011 at 12:05am

I ran some simple tests (just loaded up  - jumbo cigar box resonator) on a cone and receptor and some tube idea, I think there's something more in that amplification arm. As with the right lever you could amplify the movement to the cone greatly

(bit like a gramaphone soundbox)

I'm now thinking maybe 2 hubcaps back to back or a banjo type head, as I think you need to push air to get this one to sing.

 

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Permalink Reply by BUGGY (C) on November 19, 2011 at 12:07am

Hi

Have you got a sketch of this or any picture..

that's making more sense now, as I want to out the concept.

Randy S. Bretz said:

It`s all in the resonator diaphram that makes the cool sound plus having the horn to push that sound out. I`ve been researching this for awhile now even back the 3 years ago when the idea first came up. The original Stroh has a patent on the design [ 1902 ]. Inside the resonator diaphram there`s a thin piece of meca which acts like a huge kazoo when the vibration of the strings pass down through the metal bridge connected to a bolt that connects the resonator together. Then the sound comes out the horn, some variations on the Stroh used more then one horn. I`ve also seen where the resonator diaphram was enclosed in the wood frame of the instrument, which might help with condensing the sound  better. I`m thinkin 2 small alum. pot lids with some kind of disc in the middle to act as the diaphram might work for the resonator. Barefoot Cajun suggested to me that a model A ford horn might work as the diaphram and with the horn already connected. I even researched violin luthiers looking for parts for a Stroh for the resonator diaphram...no luck. So who ever gives this idea a try i wish them all the luck, I`m sticking with figuring out the resonator diaphram first then the rest of the build will come easy.

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Permalink Reply by BUGGY (C) on November 19, 2011 at 12:43am

found this on the web:

 

"Cary Clements built a Stroh violing using a 6" National tricone cone - which turned out to be too heavy A Stroh instrument works by moving the diaphragm in both compression and decompression from neutral, rather than going from neutral to compression. In other words, there is no tension on a Stroh cone when the instrument is not being played."

So the lever arm is critical in the design and the membrane (and I think amplifies movement)....

i've got an idea! ... back to my shed....

web link for above comments below: 

http://66.160.167.221/ubb/Forum1/HTML/002682.html

 

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