Frequency # 30 guitar

[guerraz]

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

[Steve.Toscano]

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?

[kiwigeo]

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

[guerraz]

Thank you I was curious .