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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: What do you think of these two Acrylic Isolation Platform Ideas for a Basis 1400 turntable? posted by g_greenamyer@yahoo.com on September 1, 2011 at 21:43:47:
I like acrylic and it works reasonably well. It's used as the standard shelf material for Grand Prix
Audio's Monaco racks and is extremely effective there but I do have to say that changing the acrylic shelves in my Monaco to their carbon fibre and composite shelves made a noticeable improvement. So acrylic is certainly not the ultimate material and, like every other shelf or platform material, how you support it also makes a difference.
Interestingly, in the info that came with my Monaco, I noticed that they use 2 shelf thicknesses with the choice based on the mass of the component. Apparently they find a bit of flex in the acrylic from the mass of the component helps. I'd only go for 3/4" if your turntable is quite heavy—you may do better with half inch instead.
I haven't used acrylic with Herbie's Tenderfeet but I have used it with Black Diamond Racing cones and that works reasonably well. I'd be a bit cautious about using a soft footer with acrylic, especially if there's a bit of flex in the acrylic.
I haven't tried using acrylic for a sandbox. That could be an expensive option but you could start by building the box part from mdf or ply and just using acrylic for the platform sitting on top of the sand. Since the platform will be supported evenly by the sand, there's no need to go for real thick acrylic there so I see no reason for using more than half inch thick acrylic there. Depending on the depth of your sand layer and the mass of the component sitting on top, you may well need 3/4 or inch thick acrylic for the tray if you decide to use acrylic there.
If it were me, I'd start with a piece of half inch thick acrylic large enough to support the turntable and try it with Tenderfeet and also in a sand tray. Simply find some shallow container large enough to work with your acrylic platform and deep enough to give you the thickness of sand you want, and compare results. If you prefer the sand tray to the Tenderfeet, then decide whether or not you want to use acrylic or build a tray from mdf or ply which will be quite a bit cheaper.
Results with all of these things varies a bit depending on the component being supported, especially turntables which can have either a sprung or quite rigid supports for the plinth which can make quite a difference, and also on the kind of sound you prefer. There's always an element of personal preference in the selection of vibration control method in my experience, and that means there's no substitute for a bit of personal experimentation. Tenderfeet are inexpensive, and you should be able to find a fairly cheap tray of some kind for an initial sand tray experiment so there's no real reason for you not to try both. With the Tenderfeet, you may also find that a bit of experimentation with where you place them may make a difference as well.
David Aiken
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- RE: What do you think of these two Acrylic Isolation Platform Ideas for a Basis 1400 turntable? - David Aiken 23:30:30 09/01/11 (0)
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