Spray or brush on material for inside sheet metal?


I just purchased a very nice early 90's 4/dac Technics CDP (SLP-50S) which sounds very nice but I would like to add a damping substance to the inside of the very thin sheet metal cover. Is there something out there which will adhere to the metal (add weight/isolation) and possibly improve the sonics? I've never even thought of doing this to other cdp's, but this one has so much potential for improvement I'd thought I'd ask for your opinions. (BTW, changed the stock ac chord (20-24ga.)w/
a Radio Shack 18ga. ac chord ($2.99) and the difference was noticeable.) Thanks, Bill
128x128kotta
Thanks for your responses! I have limited rack space and have a tape deck sitting on top. All this talk about controlling resonances had me curious to see if something for very little $ could improve the performance of this fine sounding CDP. Next I wouldn't mind changing the stock feet with something like Herbie's Audio Lab footers or ?
Music Direct offers a product manufactored by 3M. It is a constraint layer damping sheet, that is made up of a 10 mil stainless steel sheet, backed with an exclusive 5 mil proprietry 3M viscoelastic damping compound.

This damping compound dissapates vibrations by a sheering action (claimed to be superior in effect) rather than converting the vibration to heat as most elastomers do.

The 10 mil stainless steel sheets will increase the rigidity of the the CD top cover and will reduce the mechanical resonance that can impede the performance of your equipment.

I looked at the Music Direct on line catalog, but it wasn't listed, so you may have to call them. 800-449-8333. It is listed in thier Mail order catalog, 4" by 6" sheet runs $9.99 plus shipping.

HTH Dave
The "cheap tweak crew" over at AudioAsylum are using cheap peel-n-stick floor tile available at Home Depot. I think it would cost you about 2-3 bucks to give it a try.

They are also using "rope caulk" from HD to dampen the transport mech and other internal components.

Check out some of the Toshiba 3950 tweak post at AudioAsylum for details.

I have not used the floor tile (or any other internal device), so I'm only passing on second hand information.....

Enjoy,

TIC
I put a set of Tenderfeet from Herbie's Audio Labs under my preamp and the effect was nothing short of amazing, so much so that I figured I had to be hallucinating! Much more detail & clarity, greatly enlarged soundstage, more stable placement, deeper bass, sparkling highs. Fortunately, just as I had almost convinced myself that this had to be a placebo effect my long-suffering significant other walked in and remarked along the same lines (actually, she said that the sound was clearer & you could hear all the sounds seperately).