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On 11/06/2012, Carl Pultz wrote: > I would look at the Target HiFi HF470, currently $350 at Needledoctor. > I don't like the glass shelves. I do like the welded steel frame. You > can try different shelf material, but MDF is a fine place to start. > Solid Steel makes nice racks, but pricey. > > There definitely is an effect on the sound of any TT imparted by what > holds it off the floor. In my experience, a low mass support is > better. The floor has an effect too, of course. If you can, position > 'tables on an outside or weight-baring wall. Try to avoid vibration > from speakers, but more challenging in a large building can be > vibration from HVAC or other systems. Thin metal stand material will > dissipate vibration faster than high-mass material and tends to have > greater distribution of vibration modes, and thus causes less > coloration of the sound. Wood can work, too. But avoid anything that > creates an enclosed cavity. > > Wall-mounted shelves can work well in the right building. Again, it's > a question of how much things shake. See if you can interest somebody > in the engineering dept to bring over a measurement device and check > out your space. > I think shelves will transmit vibrations from the wall. How do you isolate the tuntable from the shelves? > Ideally, a turntable should float in mid air. But that hasn't been > developed yet, not even for audiophile money. > One could hang a board on four long springs, with a dashpot underneath to damp the fundamental. Then stand the turntable on the board. But it would be awkward to use. Regards -- Don Cox [log in to unmask]