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Where does one place AQ sorbogel feet?

I got 3 AQ sorbogel Big feet. These are supposed to reduce mechanical vibration by absorbing energy and releasing it as negligable heat. My question is where under the cdp or amp do I put them. Everyone seems to use them in threes and there are 4 feet. Do I place 2 on the insides of the front feet and 1 between the back feet? Does the flat side face down or up? What do I use to protect cdp and contact points (theyre sticky)? Anyone have experience with these and how do they sound? Thanks in advance!
bundee1

Showing 6 responses by theaudiotweak

theaudiotweak
2,769 posts
 
I used these devices many years ago. Does not matter which side is up. They effect the sound quality in either direction. Dampening devices are not selective to the frequencies they alter nor the dynamic structure they alter. I would recommend that you direct couple and not dampen. Tom
theaudiotweak
2,769 posts
 
These devices and other dampening devices do a dis-service to the transfer of music to your ears. Dampening does not selectivly kill only unwanted noise. Yes, these devices make a difference but to me they are all negative.
theaudiotweak
2,769 posts
 
Now you have 2 positions to trap the noise,top and bottom. No exit to escape from..
theaudiotweak
2,769 posts
 
Dougdeacon, Sorbothane is a frequency absorber and a damper. Which selected mechanical frequency did you choose to alter that did not change the frequency before or after the fundamental? By changing the Q did you not squelch the dynamic structure? All dampening devices are also storage devices. So how much was absorbed and how are you to predict the time and selective frequency to be released?
theaudiotweak
2,769 posts
 
My experience with Sorbothane beneath electronics has been the same as Dougdeacon's beneath speakers. Severely dulled, slow and dark. Sucked the life right out of the music. So if this is what damping is all about then direct coupling is the way to go. Remember your electronics were designed to operate over a much wider bandwidth than the music we hear. There are also harmonics of fundamentals that extend way beyond what we supposedly can hear. If we squelch these harmonics either by accident or by design then we are altering the life of the music. Couple not dampen..Tom's point of view..
theaudiotweak
2,769 posts
 
I may be the old guy here. I have, and am guilty of the following . Making several changes to my system at the same time. My enthusiasm and excitement sometimes clouds my better judgement. I have to temper my emotions and not rush to a premature conclusion. Only one device or one measurement at only one single time, that is the only way to truly measure a change and hopefully an improvement. I will try to remember this. Tom
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