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New Stand config brings about new TT problems

I recently bought a new plasma TV to help make my shared Living Room/listening room look more presentable. Prior to this we had a 55" big screen TV with the 5 shelf stand to the right side of the TV
Now the stand is lower and the big box TV is gone and the plasma hung on the wall. However I am getting a lot of noise when tapping on the TT plinth. This was not the case prior to this new config. I am assuming that the problem is sonic feedback and that the old big screen TV was helping to shield the TT from most of the feedback problem. However, if correct I'm not sure what to do about it short of a dust cover. And maybe that is the answer. The new config picys are shown in my system here, while the old config is shown
>here

FWIW, I am using a sand box now as before. In an effort to figure out this problem, I've removed the 3" maple shelf shown in the pictures and gone back to the 1" maple with separate motor platform. I've also changed the mini TNT feet back to the stock feet. There seems to have been little or no change
So therefore I'm still assuming sonic feedback. Suggestions, insights, etc will be appreciated.
artemus_5
smoffatt
205 posts
 
AudioFeil. I have been thinking about that for my Sota Cosmos TT. It currently sits atop a Sistrum platform (3 pillars design) but my floor is not rock solid like concrete floors would be. It's your typical plywood floor that "flexes" when you walk. Indeed, i suspect that wall mounts would be best for all but the heaviest TT's.
Target use to make a good wallmount at a decent price. I heard about Mana as well which Art Dudley had used for years under his Linn. Not sure what he uses now. Who makes good TT wallmounts nowadays???
redscouser's avatar
redscouser
14 posts
 


Finite Element

spec's
frank_sm
113 posts
 
The Finite Element wall mount is quite pricey, about $2K if I remember.
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