But I’ll definitely check out Schumann generators looks interesting! Thanks again !!Check my schumann generators grid modified with "golden plate" and my last creation using cheap chinese ionizer to smooth the room...
Peanuts cost and powerful results....
For the springs i use them but they must be used with 2 set of 4 for each speaker one set under and the other set on top under the heavy damping load.... The speakers must be damped by an heavy load (around 75lbs) to create a dyssimetric compressive force between the 2 sets to decrease the internal resonance of the rectangular speakers box....If not the musical timbre perception is unnatural....In my experience one set of spring under speakers is NOT the good way...
My best to you....