I have a Denon DP-1100 turntable, fairly nice for a low-mid end TT, but with a somewhat flimsy plinth. As an alternative to completely re-doing the table with a new plinth, I was considering flipping the thing over and strategically applying latex caulking compound to damp the plinth. It's pretty dead stuff when it hardens, and the extra mass should also help.
No comments? I haven't flipped my TT over to see how possible it is or where the caulk would go, but it appears that it would be a natural for TTs with flimsy plinth material. The remaining question would be latex caulk vs butyl gutter caulk.
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I think it could certainly help if you are experiencing vibrations that persist. I haven't done this with a TT, but have used rope caulk to dampen vibrations on the metal grilles for my home HVAC system. Without damping, they would ring and resonate when the heat or AC ran. I would think the key here is adding mass, so go with something that is heavy. I've seen others apply truck bed liner from a spray can to the underside of the plinth to add mass and reduce vibrations.
Certainly worth a try, though it needs care in application.
Certainly worth a try, though it needs care in application.
I would think the plinth material to be no thicker than 8mm plywood. This would warp if you apply a large quantity of liquid to the inside of the oplinth. It may be a good idea to moisture-proof the inside and clamp the outside 0f the box during this operation.
I was thinking of using floor leveling compound for this. First cover the inside of the plinth with thin plastic, than pour the compound in layers. It can readily machined with hand tools (files, drills, etc). Large areas for the motor and other items would be preempted from the pour with plastic (margarine and yogurt) containers. This would easily be a 10 pound plinth without any resonances. E
I was thinking of using floor leveling compound for this. First cover the inside of the plinth with thin plastic, than pour the compound in layers. It can readily machined with hand tools (files, drills, etc). Large areas for the motor and other items would be preempted from the pour with plastic (margarine and yogurt) containers. This would easily be a 10 pound plinth without any resonances. E
From pictures on the web, plinth appears to be a hollow box with one brace.
First I would try glueing in some more timber braces. Does the plinth sound resonant when you tap it?
TBH, I wouldn't go overboard. it's likely to be just as important, or even more so, to have the turntable on a firm stand or shelf.
First I would try glueing in some more timber braces. Does the plinth sound resonant when you tap it?
TBH, I wouldn't go overboard. it's likely to be just as important, or even more so, to have the turntable on a firm stand or shelf.
There is stuff called "Duxseal" which is like a heavy putty which is great for damping things. However it adds no stiffness, so you might want to glue in pieces of something rigid to stiffen so parts. Another option would be to fill spaces with something like epoxy, or an epoxy-like stuff mixed with some other amorphous material. That would add stiffness and damping.
Older thread, happened upon it when looking for something else. A buddy gave me his hot-rodded college deck, a Denon DP-1200. Upon examining it, I found he packed the plinth pretty well with putty. I have JBL 240Ti's a foot on either side of my stereo table, crank my system to +/- 95 dB's, and the Denon gets little to no audible bass feedback. I'd say the putty does a great job. Right next to it, my Sansui SR-929 gets feedback at only moderate volumes.
Back in the day (1976 and my first hifi) I loaded the plasticy plinth of my Technics sl 2000 with as much plastecine as I could wedge in. Not sure if there were audible improvements but it felt rewarding and fun so give damping your plinth a go!
Could just screw a 1" thick (or even 3/4") piece of Medite to the bottom of the thing. Or Blu tack it onto an appropriately suitable sized Patio Paver Or if $$ Flush onto a cut to size Granite slab.
Try Kitchen remodelling shops they often have Sink off cuts from Granite Counter installs.
Leave the Goop/caulking sludge for inept Plumbers.
Try Kitchen remodelling shops they often have Sink off cuts from Granite Counter installs.
Leave the Goop/caulking sludge for inept Plumbers.
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Deflex or any of the materials used to damp road noise in car hifi installations. (Matt, spray, etc.)
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