In the last month or so I have used 3 Nobsound spring feet on each of three SVS sealed subs in my listening room. I pull out most all the springs and have no difficulty with the subs staying in position on carpet. The reduced bass through the suspended wood floor was noticeable.
I've been too lazy to do serious AB (springs in/springs out) comparisons yet but the sound is as good, without 'floor effects'. Put three under my turntable as well; I think they're more suited to mechanical issues. Would like to try under my speakers but need to think of a very safe way... :-)
I've been too lazy to do serious AB (springs in/springs out) comparisons yet but the sound is as good, without 'floor effects'. Put three under my turntable as well; I think they're more suited to mechanical issues. Would like to try under my speakers but need to think of a very safe way... :-)