Thanks rix....
I plan to do it ONLY if i must sell my actual house when the mother of my wife will die... I hope it will take years...
My speakers are heavily modified like my room is...
The S.Q. is very good for me...
But i dont want to do the work of reloading them and fine tuned them again with the springs and all the devices i used on them if i am not in the obligation to do it...
I will be in this situation when i would go in another house anytime soon or not, i dont know when ...
But i planned to reload and retune them with this tool at this time to better fine tune my 2 sets of springs which are compressed with different load above and on top... In my experience even under 100 grams of load of the near 80 pounds of concrete make an audible difference... It takes me few days to tune them..
For now the speakers seems very good on this count...not perfect but good...
All speakers had resonance...
@mahgister - if you ever use the sweep and play with the mass on top of your speakers to tune the load, I’d love to read your findings?
And of course, as you share, always welcome that I can share something of benefit to you sir.