For those of you supporting heavy speakers on springs, do you recommend
stiffer or more moderate spring support? In other words, how does the
supported combined speaker/stand weight compare to the total available
spring loading capacity....something moderate like 50% or something less
(i.e., stiffer springs)?
From experience, I would suggest somewhere in the 50% deflection of each spring would be a reasonably safe bet, I know that the tendency is to keep the tweeter (at least) on axis at listening position.
The term I use zero stiffness, stiffness or rigidity here couples the speaker to the support, by removing the stiffness (zeroing it) the speaker cabinet should find it's mechanical equilibrium (where it rests when not energised) and if you can gently move a big heavy speaker with just your pinky finger, you have a pretty good starting point for vibration control.
The spring rate is weight dependent. Weight / number of springs @ 50% compression.
Spring rate is critical, turns is also important, so far I have liked the most, are 3 to 3.5 turns + ground ends on each end of the spring.
I deliberately purchase with the diameter at least equal to or greater than the final load height.
I found that I like a taller spring, my guess is that small amplitude high frequencies are well sorted with more material to deflect them??
Any experts here?
I am not an expert, that was my employer, however I learnt all that I could from him before moving to USA. PM me again, we can go through it together and I'll see if I can get you similar results to MC.
