What are you trying to tweak improve?

Turntable base for isolation. I see commercial ones available for $1250 ... and more ... and I nearly faint. I'm working on a prototype, with assistance from engineers at Sorbothane. This is a granite slab (1.25" or 2.50"), on an air bladder, in a wooden frame which is all glued and doweled (no nails or screws to vibrate), which sits on engineered Sorbothane feet. Since the guy who sold me the granite sold me 10 pieces, once I get this tweaked to its maximum potential, I might put some up for sale here. But the results so far are very promising :-)

Mdomnick ... I'm far from the most technically-able guy here ... but it seems to me that dampening a component's chasis through mass is a time-honored method of increasing its stability and resistance to movement through vibration. This is half of the "trick" of the VPI Magic Brick (the other half being RF absorption). I would think that, provided the combined weight of the component and the added mass are within the weight limits prescribed by the cones' or spikes' manufacturer, that the added mass should help. But your suspicion is correct -- there are very few concrete answers here, and the ultimate judges of the effectiveness of the tweak must be you and your ears.

Regards,
Paul