Modal goal - Strad average


Balance is the key in aim to reproduce The Strad Sound. Average measures from "Stradivari's golden period" are from published articles. The selection of data is small and varies some depending on which articles you look at. This is my modal goal and plate weights, when measuring at ~6 % EMC in the wood. In Scandinavian countries B1 modes varies +/- 20 Hz between winter/summer.
Target
Plates in assembled varnished violin

Top 
weight 65 g
M5 350 Hz

Back
weight 95 g
M5 350 Hz

Strad average
(usually calculated from CT scan)

Top 
weight ~62-64 g

Back
weight ~90-95 g



https://sites.google.com/site/peterkgviolins/home/modal-goal---strad-average/StockholmFFT.PNG

Target
Assembled violin - Key modes under 600 Hz, with chin rest [without]

A0  270 Hz 
A1  456 Hz
C2  395 Hz  [405]
B1-  445 Hz [455]
B1+ 536 Hz [540]


Strad average
(by impact hammer and impulse at the bridge  )

A0  272 Hz 
A1  460 Hz
C2  412 Hz
B1-  445 Hz
B1+ 536 Hz