Help with analysis

Talk about musical instrument construction, setup and repair.

Moderators: kiwigeo, Jeremy D

Post Reply
weslewis
Kauri
Posts: 38
Joined: Thu Nov 25, 2010 1:43 pm

Help with analysis

Post by weslewis » Mon Sep 03, 2012 12:09 pm

this is a top with bracing inspired by the Gore Gilet books...I will post a pic from my pc shortly, on my laptop at the moment, New to this VA program...
Attachments
top 1.jpg

weslewis
Kauri
Posts: 38
Joined: Thu Nov 25, 2010 1:43 pm

Re: Help with analysis

Post by weslewis » Mon Sep 03, 2012 12:16 pm

here is the bracing layout
Attachments
PICT0107.JPG
PICT0107.JPG (145.01 KiB) Viewed 8544 times

luke_lee
Sassafras
Posts: 48
Joined: Thu Nov 25, 2010 6:54 pm
Location: Sydney

Re: Help with analysis

Post by luke_lee » Mon Sep 03, 2012 5:59 pm

Hi,

Is this the frequency responce for the finished guitar including the bridge? What type of guitar, steelstring classical? Also the white number are hard to read.

Luke

User avatar
kiwigeo
Admin
Posts: 10596
Joined: Sat Sep 29, 2007 5:57 pm
Location: Adelaide, Sth Australia

Re: Help with analysis

Post by kiwigeo » Mon Sep 03, 2012 6:52 pm

LUKE_LEE wrote:Hi,

Is this the frequency responce for the finished guitar including the bridge? What type of guitar, steelstring classical? Also the white number are hard to read.

Luke
Bridge patch shape suggests its a steel string. Circa 100Hz peak looks like an air resonance peak so this would suggest the top is on the guitar when analysis done.
Martin

weslewis
Kauri
Posts: 38
Joined: Thu Nov 25, 2010 1:43 pm

Re: Help with analysis

Post by weslewis » Mon Sep 03, 2012 9:05 pm

finished steel string guitar, strung up
Attachments
DSC00365 (426x640).jpg
DSC00365 (426x640).jpg (193.07 KiB) Viewed 8456 times

weslewis
Kauri
Posts: 38
Joined: Thu Nov 25, 2010 1:43 pm

Re: Help with analysis

Post by weslewis » Mon Sep 03, 2012 9:08 pm

numbers are 103 , 185, 194 ,218 , 244 , 283, 327 , 389 , 456

User avatar
woodrat
Blackwood
Posts: 1155
Joined: Tue Nov 25, 2008 6:31 am
Location: Hastings River, NSW.
Contact:

Re: Help with analysis

Post by woodrat » Tue Sep 04, 2012 8:55 am

weslewis wrote:numbers are 103 , 185, 194 ,218 , 244 , 283, 327 , 389 , 456
Hi Wes...did you put the side weight attachment points in to trim body resonances? Your 185 needs to go down 5 Hz to start with and side weight is an easy and effective way to do it. I put them in all my guitars now.

John
"It's never too late to be what you might have been " - George Eliot

User avatar
kiwigeo
Admin
Posts: 10596
Joined: Sat Sep 29, 2007 5:57 pm
Location: Adelaide, Sth Australia

Re: Help with analysis

Post by kiwigeo » Tue Sep 04, 2012 9:03 am

Wes have you done any Chladni testing? Im currently in the process of doing same on my falcate classical.....the discussion may be of use to you.
Martin

weslewis
Kauri
Posts: 38
Joined: Thu Nov 25, 2010 1:43 pm

Re: Help with analysis

Post by weslewis » Tue Sep 04, 2012 9:26 am

not yet, guitar has been finished for several months and sounds really good, prototype design i have another in process with falcate bracing so i can compare

Post Reply

Who is online

Users browsing this forum: No registered users and 278 guests