All,
I'm currently into constructing a new armboard for my all DIY turntable and Schröder Clone tonearm.
Here's the history.
I started out with an armboard entirely made of aluminium.
Sound was quite good - until I tried making an armboard from Panzerholz (same material as the plinth is build from):
The first version was without the copper disks. The soundstage was already way better than with the aluminium armboard - but it was lacking bass.
The two disks glued together with a viscoelastic glue cured that.
And now I beleive that there is / may be some potential left that I can unearth with a proper approach.
What I did was calculate the resonance freqauencyof the tonearm based on the effective mass of the tonearm: 8,05Hz.
As I read in one of the few threads that seem to be reasonable if it comes toi matchng armboards to tonearms, the mechanical impedances of both should be a match.
So I've calculated the mechanical impedace (with a little help from chatgpt) Zm = i1,752Ns/m based on the resonance frequency of the tonearm.
And this is where I'm lost and stuck. If I now would like to make the armboard of Panzerholz or a composite of different materials - say Aliminium/Panzerholöz/Aluminium - how would I calculte it's dimensions?
Or am I entirely wrong with my approach?
Best Stephan
I'm currently into constructing a new armboard for my all DIY turntable and Schröder Clone tonearm.
Here's the history.
I started out with an armboard entirely made of aluminium.
Sound was quite good - until I tried making an armboard from Panzerholz (same material as the plinth is build from):
The first version was without the copper disks. The soundstage was already way better than with the aluminium armboard - but it was lacking bass.
The two disks glued together with a viscoelastic glue cured that.
And now I beleive that there is / may be some potential left that I can unearth with a proper approach.
What I did was calculate the resonance freqauencyof the tonearm based on the effective mass of the tonearm: 8,05Hz.
As I read in one of the few threads that seem to be reasonable if it comes toi matchng armboards to tonearms, the mechanical impedances of both should be a match.
So I've calculated the mechanical impedace (with a little help from chatgpt) Zm = i1,752Ns/m based on the resonance frequency of the tonearm.
And this is where I'm lost and stuck. If I now would like to make the armboard of Panzerholz or a composite of different materials - say Aliminium/Panzerholöz/Aluminium - how would I calculte it's dimensions?
Or am I entirely wrong with my approach?
Best Stephan
