Improving a stone rack


Hi all, I have a large stone rack for my system, in beautiful granite, which works great for stability, but maybe not so good for other aspects of the sound. I wonder if it contributes to some treble ringing and harshness. I want to improve the sound, thinking of felt damping on the wall behind the rack, some form of cloth to cover the reflective surfaces of the shelves, and adhesive rubber type mats on the bottom of the stone shelves. Is this the way to go? Experience based advice is very welcome. My rack weighs a ton. It is not easy to compare to a wood or composite rack. I need advice on how to counter the sound problems of stone or similar polished surface shelf racks. I want to try this, before I consider a new rack or shelf arrangement.

Ag insider logo xs@2xo_holter

I am testing  Cerapucs under the maglev feet on the Hanss T-30 record player. An improvement? First test: yes, maybe. Slightly more open, detailed treble, and better timbre? So the pucs stay, for now.     

So far, raising components on footers has worked very mildly positively, in the rack - now trying the Einstein preamp on Walker validpoints and the Hanss player on cerapucs. So far, no dramatic effects, maybe a bit, although subtle. I have some large black ceramic cones to try also (if i find them), and the Nobsound springs when they arrive.

At last, some clear progress. The record player is clearly critical. A combination of better feet (Cerapucs) and better power cord (Gutwire) seems to be what the doctor ordered. My wife agrees. The effect is as if the artist comes closer, I can hear more of the recording. Very promising, and quite unexpected.

With Sidsel Endresen and Bugge Wesseltoft: Try, on their Out here album, 2 x LP at 45 rpm, it is like vocalist Endresen is here in my room. On other less good recordings, like Jefferson Airplane: Wooden ships, from Volunteers, and Doors: Riders on the storm, from LA Woman, again from my best (45 rpm) versions, the same effect is there, so even if I can also hear the recording defects, in fact better than before, in the overall sound, they are reduced.

Three sets of Nobsound springs have arrived, so I am testing them under various components. They need to be tuned, so I am taking out some of the seven springs in each foot below the lighter components, so they 'sag' down appropriately. The jury is out. These things take time. It may be, that they work better under my lighter components, like the Teac dac streamer and the Hanss turntable speed control, than the heavier ones like the Aesthetix Io power supplies. Not sure yet. So far, no "wow" type of sound change, but maybe a little bit here and there. Plusses and minuses. Anyway, for a low cost, this is an interesting experiment. Granite stability plus spring type floating of the component. Maybe with a cost in terms of less precise bass but somewhat better mid tone and 3d soundstage? We shall see.