Frequency # 30 guitar

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guerraz
Gidgee
Posts: 5
Joined: Sun Oct 18, 2020 1:12 am

Frequency # 30 guitar

Post by guerraz » Mon Nov 23, 2020 2:06 am

Good day , I want to share the Hz readings from the guitar I'm finishing up . I glued the bridge on yesterday , it's about 0644 Sunday here in Rancho Cordova, CA . I can't wait to string this guitar up today. The Hz before the bridge were
81.4 Hz
184
243.4
After the bridge the readings today are
84 Hz
188
241
I did not use the spreadsheet to determine thickness or a mold to try to dial in the top frequency. My last two guitars frequencies are
92.1 95.5
186.3 188
238.8 250
My question is , in order to raise the top resonance Hz do I need more weight or less weight ? These are classicals guitars spruce/ rosewood all the same brace pattern .
Thank you
Zef

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Steve.Toscano
Blackwood
Posts: 489
Joined: Thu Feb 07, 2013 11:43 pm
Location: Port Stephens NSW

Re: Frequency # 30 guitar

Post by Steve.Toscano » Thu Nov 26, 2020 1:58 pm

guerraz wrote:
Mon Nov 23, 2020 2:06 am
My question is , in order to raise the top resonance Hz do I need more weight or less weight ? These are classicals guitars spruce/ rosewood all the same brace pattern .
Thank you
Zef
In a nutshell - You need less weight (mass) and/or more stiffness. Both in the soundboard.

However why do you feel the need to raise the top resonance? High 180's isnt bad for a classical (its where i target mine nowadays). Is there something audibly wrong with the instruments?

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

Re: Frequency # 30 guitar

Post by kiwigeo » Thu Nov 26, 2020 3:06 pm

Less weight/more stiffness in the top...or added mass in the sides.
Martin

guerraz
Gidgee
Posts: 5
Joined: Sun Oct 18, 2020 1:12 am

Re: Frequency # 30 guitar

Post by guerraz » Sat Dec 26, 2020 6:57 am

Thank you I was curious .

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