MDF Rack dampening question

Adding mass is not all bad. Choosing the right material for that added mass is different than what we all were LEAD to believe. Mixing and matching materials and geometry is like trying to eat a soup sandwich. If the brass is doing such a good job as a conductor why use rubber products or carbon fiber? Why jumble up the phase coherency and transfer speed by using dissimular material and geometry? Transfer methods are the opposite of damping/storage methods.

Alex you need to ground that rack first to the floor. Audiopoints are what I would recommend and the only coupling device I use and sell. What size, well call Robert at Starsound. Whatever size fits then also use the APCD coupling discs under each Audiopoint for surface protection as well as an increase in surface tension, resonance capture and release. As your budget progresses apply the same ideas and methods to the components shown on the rack ..and also your speakers. Resonance transfer is the method of my choice ..no such thing as isolation. One method one singular coherent voice.

Installed Dynamat Extreme under each shelf, took about 20 minutes total. Shelves feel much more solid now, and has definitely reduced vibrations for each piece of equipment.

Problem is at the same time I upgraded the power amp to a McIntosh mc7200, and upgraded the Oppo 980 by bypassing the opamps with better caps, and installing cardas RCA connectors.

Does the system sound better? Yes. How did the rack dampening with the sand and dynamat make a difference to the sound? I have no idea.

Instead of messing around with your rack to dampen vibration, you instead might want to try using the Herbies Audio Lab Component Top Weights to lessen the vibration. I put two of his Super Sonic Srabilizer(s) on top of my pre-pro. Without them, when I tapped on the chassic I could feel vibration. With them, the vibration was gone. They cost only $20.00 each so you won't break the bank.