Is your soil more resistive or more conductive normally? Do you notice any change when it rains lowering resistance?
I think they should be read for ones electrical education, and then be applied to ones audio system. Of course, for protection from shorts or God forbid lightning, the resistance need not be as low as we would like for audio systems. Understanding grounding and how to improve it can only help improve our sound. I believe code only requires <25ohms, I think we would like to have far less resistance to ground, like <0.1ohms.
My entire electrical system is only 2 years old. In that time, I’ve deoxidized and protected all grounding connections. As I’ve kept them in good condition, I didn’t experience a change/improvement but likely have enjoyed it all along. I have large gauge ded circuits and a P10. I’m getting into those last few % of improvements territory.
I do have just over 100 gallons of rain water storage literally 2’ from my ground rods location. I can easily setup a system to ‘water’ them keeping the moisture content significantly higher without so much as to increase corrosion much, hopefully.
I’ve read that soil amendments are only marginally effective and if more noble than the copper plate it will eat the copper away rather quickly exposing the steel rod which will go even quicker.
This looks promising. http://www.sankosha-usa.com/sanearth.asp
From this article by Fluke:
The NEC has stated to “Make sure that system
impedance to ground is less than 25 ohms
specified in NEC 250.56.
In facilities with sensitive
equipment it should be 5.0 ohms or less.”
The Telecommunications industry has
often used 5.0 ohms or less as their value for
grounding and bonding.