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| Author: | wbergman [ Sun Apr 19, 2015 9:02 am ] |
| Post subject: | soprano sound hole diameter |
I got a plan that says 1". It scales to 2". One Internet source shows 1-3/4". What size should I use? |
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| Author: | Allen McFarlen [ Sun Apr 19, 2015 3:00 pm ] |
| Post subject: | Re: soprano sound hole diameter |
I use 52mm. |
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| Author: | Quine [ Mon Apr 20, 2015 6:43 am ] |
| Post subject: | Re: soprano sound hole diameter |
1 3/4" to 2" is a pretty common range. 1" is crazy. Maybe your plan gave the radius instead of the diameter |
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| Author: | unkabob [ Mon Apr 20, 2015 2:44 pm ] |
| Post subject: | Re: soprano sound hole diameter |
I was given a calculation for Helmholz Resonance by Christophe Mineau based on the volume of the instrument . soundbox volume = V calculate v/4.188 and take the cube root ,then divide by 4= radius of the soundhole. The original was done on violins and the correction for guitar frequencies is 17% (my guess is bigger). The calculation may be too much work for this project but knowing that there is a calculation may be useful on new (weird) future projects. good luck Bob 
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| Author: | Ken McKay [ Tue Apr 21, 2015 9:31 pm ] |
| Post subject: | Re: soprano sound hole diameter |
see if this comes through clearly. It is about everything you might need regarding measures. building a good one is up to you.  Attachment: uke_comparison_photo.JPG
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| Author: | Dennis E. [ Mon May 04, 2015 6:07 pm ] |
| Post subject: | Re: soprano sound hole diameter |
A plan specifying a 1-inch soundhole for a soprano uke would make me suspicious of all other dimensions shown on that plan. Martin sopranos have a 1.75-inch soundhole. It seems to have worked for them. |
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