http://www.audioasylum.com/audio/vinyl/messages/105/1059508.htmlosted pics of the finished platform over at AA Here is the address:
http://www.audioasylum.com/audio/vinyl/messages/105/1059508.html |
Bearpaws from edensound are excellent footers. |
Stereo5 wrote,
"The turntable uses 4 cones, one in each corner."
Nothing is written. |
The turntable uses 4 cones, one in each corner. |
3 cones is dangerous for a TT. |
The jury is still out on whether 3 or 4 cones is more stable. It depends a lot on how widely the cones can be arranged under the turntable. If there are any even small irregularities in the level of the underside of the turntable OR the platform on which the cones rest I can see where it's possible that equal contact or pressure on each cone might not be obtainable using 4 cones. I.e., Three points determine a plane. |
If it were me, I'd follow Mapleshade's recommendations. I'd also try removing the cups from the VPI cones and let the points have contact on the platform. Of course as you know, that's really what the platform is for - to act as a "sink" for the vibration to drain into. I encourage you to experiment both ways, but I expect the cups would only act as a hard, flat surface against another hard, flat surface and just introduce the possibility for more vibration to occur. That particular kind of vibration BTW (between 2 hard surfaces), IME tends to add a recognizable brittleness or harshness to the upper mids. Sometimes using hard points that I've tried have had that same kind of effect, especially if the component on top of them weighs too little. It may help to add mass, but that may be a little problematic with a TT, of course. The biggest potential problem I see with your TT depends on the number of cones you have. If you have 4 cones, this is the most stable arrangement, but you may need to insure that all 4 are in as close to an equal amount of contact with the platform as is practical. Due to the fact that your platform may not be perfectly flat, then any time you need to lift the TT off of the platform, you then may need to recheck this, or you may hear a change...or not, it may depend. Of course, it helps that it's soft wood we're talking about and, effectively the more the points can dig in, the better...less chance for that upper-mid problem to develop. Of course, if you had 3 cones, this problem would be moot, although it would maybe be an awkward arrangement if your TT got bumped. Hope this helps. |
for footers, check out edensound. Dan is real nice to deal with and makes a wide variety of quality footers at a reasonable price. I have some of his terrastone footers under my VPI table. |
You should not paint the maple block. It doesn't require it and will degrade the sound. Let the Scout's feet do what they do with no protective discs. Save up for a thicker block. Three inches thick is the minimum, four is ideal. |
i second both the trying of blue-tack and herbies db neutralizer dots under the maple if hight does not permit mapleshades cork/rubber. I use herbies db under my mapleshade speaker base and under my tt/preamp wall rack. that stuff is great and cheaper than many tweaks. i would also suggest letting the cone feet of your tt sink right into the maple baseĀ
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Blue-tack in the school supplies section at kmart |
They said that maple has certain sound qualities and by using an oil based paint, it seals up some of the natural something or other and degrades the sound. When Mapleshade makes a semi gloss black shelf, it is given 4 coats of black lacquer and then hand buffed. That is what I intend to do although at my age, the hand isn't quite as steady at spray painting. I will do light even coats so the paint doesn't run. The lacquer paint is supposed to give the smoothest finish of all the types of paints. |
Sound reflecting off an oil-based painted maple platform atop a rack would harm the sound? Oh for heaven's sakes, now I've heard everything!!
Man, you guys gotta get out more, stressing over the "audio" qualities of a paint formulation is just too much...
-RW- |
For a nice finish, oil is hard to beat. I wonder why they say not to use it. Is it because of sound reflecting off it, or just change the properties of the wood itself? If its because of reflections, staining it may be the best option. |
you can get felt dots from "Herbies" amongst other vendors who can't wait to sell audio tweaks. (I googled it"). You may like that change but remember, above all do what makes you happy. There are no hard and fast rules, well maybe a few, but you get the picture. |
What did Mapleshade suggest? |
They recommend a spray can of 4 coats of semi gloss black lacquer paint non oil based. They said an oil based paint would degrade the sound. I am also wondering if I should put a coat of sealer after I paint it? |
As far as what you should put under the platform, you should just try a few thing and keep what sounds best. I would try some of those little rubber feet that stick on to where ever you put them.
What kind of paint do they recommend you use? |
