OK. That does it. Now I'm totally confused. Here is what I knew up to now : On speakers, when the voice coil moves, it generates an equal (assuming no loss) force in the opposite direction (ie towards the back). If not dampened, this causes colorations and reduction of power towards the front. Therefore, it is necessary to anchor the speakers to the floor firmly to stop the backward motion of the cabinet. The best way to do this via spikes and cones. There are even suggestions that the cone and/or spike 'cups' reduces the 'firmness' of the anchoring and should be avoided. There was even a thread in A'gon which suggested marble to be bolted to the speaker ! Now, in this thread, I read about 'Aurios' and 'Roller Blocks' under the speakers. Again, to my understanding, these are designed to 'sway', -possibly- causing the speakers to move. What am I missing here ? Can someone please explain...
Cones vs. factory spikes?
Has anyone done any A-B testing for various speaker cones? Currently, my KEF REF 4s (120 lbs each, ported base) have the factory spikes. Before spending big bucks on Orchard Bay cones (used on Talon Khorus and recommended by my dealer) or Black Diamond Racing (why is their web site is abysmal?), I would like to know what others have used on the bottom of their speakers and if they make an "audible" differnce. Rest of system (for 2 channel) is: Aranov tubemonos, firstline pre, Sony SCD-1 (on order).