soprano sound hole diameter

Board index » Mandolin - Mandola - Ukulele Forum

All times are UTC - 5 hours

Forum rules

Same rules apply to all forums at the Luthiers Forum.

soprano sound hole diameter

Page 1 of 1

[ 6 posts ]

Print view

Previous topic | Next topic

Author

Message

wbergman

Post subject: soprano sound hole diameter

Posted: Sun Apr 19, 2015 9:02 am

Koa

Joined: Mon Dec 18, 2006 9:42 am
Posts: 1577
Location: United States

I got a plan that says 1". It scales to 2". One Internet source shows 1-3/4". What size should I use?

Top

Allen McFarlen

Post subject: Re: soprano sound hole diameter

Posted: Sun Apr 19, 2015 3:00 pm

Cocobolo

Joined: Fri Dec 01, 2006 6:44 pm
Posts: 471
Location: Australia
First name: Allen
Last Name: McFarlen
City: Mt. Sheridan
State: Qld.
Zip/Postal Code: 4868
Country: Australia
Focus: Build
Status: Professional

I use 52mm.

_________________
Allen R. McFarlen
Barron River Guitars & Ukuleles
Facebook
Cairns, Australia

These users thanked the author Allen McFarlen for the post: wbergman (Sun Apr 19, 2015 5:05 pm)

Top

Quine

Post subject: Re: soprano sound hole diameter

Posted: Mon Apr 20, 2015 6:43 am

Koa

Joined: Thu Dec 18, 2008 11:42 am
Posts: 1135
Location: Hudson, MA
First name: Kevin
Last Name: Quine
City: Hudson
State: MA
Country: Usa
Focus: Build
Status: Amateur

1 3/4" to 2" is a pretty common range. 1" is crazy. Maybe your plan gave the radius instead of the diameter

Top

unkabob

Post subject: Re: soprano sound hole diameter

Posted: Mon Apr 20, 2015 2:44 pm

Koa

Joined: Sat Nov 07, 2009 9:34 pm
Posts: 552
City: winnipeg
State: manitoba
Country: canada
Focus: Build
Status: Amateur

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 :ugeek:

Top

Ken McKay

Post subject: Re: soprano sound hole diameter

Posted: Tue Apr 21, 2015 9:31 pm

Koa

Joined: Fri Jan 25, 2008 9:55 am
Posts: 982
Location: Traverse City Michigan

see if this comes through clearly.

It is about everything you might need regarding measures.
building a good one is up to you. duh

Attachment:

uke_comparison_photo.JPG

You do not have the required permissions to view the files attached to this post.

_________________
Ken

These users thanked the author Ken McKay for the post: PeterF (Tue May 05, 2015 4:10 pm)

Top

Dennis E.

Post subject: Re: soprano sound hole diameter

Posted: Mon May 04, 2015 6:07 pm

Cocobolo

Joined: Wed Dec 29, 2004 1:33 pm
Posts: 270
Location: United States
First name: Dennis
Last Name: Ecklund
City: Athens
State: AL
Zip/Postal Code: 35611
Country: USA
Focus: Build
Status: Amateur

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.

Top

Page 1 of 1

[ 6 posts ]

Board index » Mandolin - Mandola - Ukulele Forum

All times are UTC - 5 hours

Who is online

Users browsing this forum: No registered users and 54 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:

Official Luthiers Forum!

Forum rules

soprano sound hole diameter

Who is online