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Post by linn on Oct 3, 2018 16:15:57 GMT
Hi. Just set up a new build and thought someone might be interested. An experiment with a thin/light soundboard (~2mm) and narrow/tall bracing. Normally would use about 2.8mm for this size of guitar, so a fair weight saving, so quite a responsive top. Myrtle/Sitka, Bubinga trim, Ebony FB and Bridge. Neck Sapele and Idigbo. 410m lower bout, 310mm upper, 650mm scale, Jumbo/GS type shape. Bracing pic is not yet finished but gives an idea. Sounds pretty good to me, and some players who have test driven, despite some traditionalist who are not so keen on this style of bracing for some reason. |
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ocarolan
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Post by ocarolan on Oct 3, 2018 17:39:32 GMT
Welcome aboard Colin - cracking first post - feel free to share more of your work!
Any chance we can hear this one?
Keith
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francis
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Post by francis on Oct 3, 2018 18:36:32 GMT
linn Like that, all for experimenting and exploring new or modified ideas. Like the staggered tuners.
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Post by Alan J on Oct 14, 2018 13:23:11 GMT
Have you tried using chladni patterns on the guitar to see where nodes might be occurring with this configuration? That lattice must have had some major influence over the monopole response of the guitar.
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Post by linn on Oct 15, 2018 12:19:14 GMT
Welcome aboard Colin - cracking first post - feel free to share more of your work! Any chance we can hear this one? Keith OK, I'll try - first time I've recorded, edited and converted music. Recorded on my Zoom H1 at my kitchen table, (played and sung) by Graham Legge, folk player and sound engineer extraordinaire (nothing to do with this recording BTW), old client and now a friend. Sound levels seem to have been too low during recordings, headphones? soundcloud.com/colin-north-849679653/red-and-black-mp3And a bit of strumming soundcloud.com/colin-north-849679653/3a-1 |
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Post by linn on Oct 15, 2018 12:33:27 GMT
BTW, satin finish, Enduro Var. Attachments:
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Post by linn on Oct 15, 2018 12:39:14 GMT
Have you tried using chladni patterns on the guitar to see where nodes might be occurring with this configuration? That lattice must have had some major influence over the monopole response of the guitar. Not set up for that yet, but I agree, |
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Post by ocarolan on Oct 15, 2018 14:48:28 GMT
Welcome aboard Colin - cracking first post - feel free to share more of your work! Any chance we can hear this one? Keith OK, I'll try - first time I've recorded, edited and converted music. Recorded on my Zoom H1 at my kitchen table, (played and sung) by Graham Legge, folk player and sound engineer extraordinaire (nothing to do with this recording BTW), old client and now a friend. Sound levels seem to have been too low during recordings, headphones? soundcloud.com/colin-north-849679653/red-and-black-mp3And a bit of strumming soundcloud.com/colin-north-849679653/3a-1Thanks for that, Colin! Sounds good to me on both recordings. Well done for taking the trouble of breaking new ground there! It's a pity you find some to be against this kind of bracing in itself when it's the final sound and feel/response that counts, rather than how you choose to achieve it. The Zoom recorders are really handy and remarkably good quality for the price. (I did an entire CD of guitar choons with an H2 at my kitchen table some years back.)The levels were a little on the quiet side, though not unduly so. I'm guessing you used the files straight from the Zoom...? If you import them into a simple free programme like Audacity you can tweak the levels and tidy up the starts and finishes (and do much more if you really want to...) really easily and re-export in whtever format you want. Even I can do it! Home recording can get quite addictive (and expensive) if you let it, but diminishing returns set in fairly quickly once you get past the Zoom level of things, depending on what you want to achieve and the use to which results will be put. Thanks again - hope we'll hear more from you! Keith |
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Post by Alan J on Oct 15, 2018 15:01:03 GMT
Well worth a bash just for fun. I use FFT by six one studioApp which can work out the resonate frequency of your guitar 180-220Hz ish. Then you can play that frequency through the app into your amplifier.
Immobilise the guitar on its back, sprinkle tea leaves over the top and blast it with the RF tone. The top should vibrate and the tea leaves dance, eventually they will jump to a horshoe shape around the edge of the guitar. The leaves stop at place where the soundboard is not moving, a node, so the ideal placement is around the edges of the guitar. In practice you will find the nodes are an inch, maybe two in from the edge.
The closer to the edge, the more active your diaphragm, the richer the sound.
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Post by linn on Oct 15, 2018 15:16:46 GMT
Thanks Keith. Yes, for my own builds, I reply on my own ear, clients and friends who play to guide me. I took this guitar to the Ullapool Guitar Festival, and had plenty good players (and builders) comment favourably on it. Basically over the years I have tried to learn to "filter" advice and opinions from the net. I find them best when viewed with a large pinch of salt and a knowledge of where they are coming from Yes, did them directly from the Zoom H1, but since getting exactly the same advice from Mr Legge (serendipity) I have increased the levels using Audacity and will upload to Soundcloud again. OK, so cant edit earlier post so I'll put the link here. soundcloud.com/colin-north-849679653/red-and-black-1 |
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Post by linn on Oct 15, 2018 15:25:06 GMT
Well worth a bash just for fun. I use FFT by six one studioApp which can work out the resonate frequency of your guitar 180-220Hz ish. Then you can play that frequency through the app into your amplifier. Immobilise the guitar on its back, sprinkle tea leaves over the top and blast it with the RF tone. The top should vibrate and the tea leaves dance, eventually they will jump to a horshoe shape around the edge of the guitar. The leaves stop at place where the soundboard is not moving, a node, so the ideal placement is around the edges of the guitar. In practice you will find the nodes are an inch, maybe two in from the edge. The closer to the edge, the more active your diaphragm, the richer the sound. I bought the Allan Carruth DVD for tuning plates but haven't set up the apparatus yet (which I have bought) but use Audacity to do a spectrum analysis for coupled frequencies "a la Trevor Gore" |
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Post by Alan J on Oct 15, 2018 15:38:29 GMT
Trevor is fantastic isn’t he. Tried working through the maths in his books though and even with a degree in the subject I struggled.
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Post by linn on Oct 15, 2018 15:47:45 GMT
Trevor is fantastic isn’t he. Tried working through the maths in his books though and even with a degree in the subject I struggled. Yes, he is. I have no degree in anything, but you don't need it to follow the gist and of course everything is summarised at the end of each section. Fortunately I do write a decent spreadsheet! And there is a very helpful Trevor Gore book section on ANZLF luthiers forum, which he checks and writes replies frequently. www.anzlf.com/viewforum.php?f=33&sid=6ccb2f1963f08d96b96b5dd5d33e562a |
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Post by Alan J on Oct 17, 2018 10:42:02 GMT
I couldn’t get Gore’s calcs to work for thicknessing boards for a long time. It worked out the the formulas he used were far too complicated for a spreadsheet to perform in one or two cells. I don’t know how many hidden cells I ended up using in the end. I just know I was left amazed by how limited spreadsheets could be.
Just finished my first “Gore Thicknessed “ guitar. I say finished, it going into the spray shop next week so it has a while till it’s stringed up. Quite excited to see how it play, though I have to say the tap tones sound hopeful.
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Jo whoever he is.
