Tweakers' Asylum

RE: Wooden isolation platforms question

71.235.147.197

Dotsystem

In Reply to: RE: Wooden isolation platforms question posted by greg7 on July 28, 2007 at 07:35:24

For platform support, consider the FIM 305-3 bearing kits (around $90). You can either recess the bearing cups into the underside of the platform or rest the platform on top of them. I find these work better than brass cones or cork/rubber blocks.

Bob

Follow Ups:

Where are you buying them from? - dave c 22:24:05 07/29/07 (5)
I have found an online store at $86 a set of 3 but they don't have any. FIM claim a price of $180 a set of 3.
- Audio Nut in AZ is where I got mine about a month ago... - clio09 06:51:25 07/30/07 (0)
  for $150 for 2 sets. They now have the platinum series for $150 for 1 set (check the ad on Audiogon). Also, try the Cable Company as they had them listed on their site. In fact you could get the whole FIM platform for $180.
- RE: Where are you buying them from? - Dotsystem 03:49:43 07/30/07 (3)
  Try Acoustic Sounds. There is a new version of these made out of platinum. You probably saw the price for those.
  
  Bob
  - Strange store... - dave c 20:06:15 07/30/07 (2)
    ... THey are $86 for a set of three but not in stock or $240 for a set of 4 and they are in stock. It seems to be for identical models.
    - RE: Strange store... - Dotsystem 03:45:12 07/31/07 (1)
      The set of 4 should be the Platinum version which I believe is fairly new. The difference is the the concave surface on the bearing cups is polished steel on the standard version versus platinum. The standard version is also available in sets of 4.
      
      FIM is a small company and when dealers sell through their stock, it can take a while to replenish. If you use heavy components (50+) pounds and only 3 contact points the cups on the standard model may get scoring marks on the cup. I have only seen this on one cup and the platform floating does not seem to be effected. One solution would be to use 4 for that component. Another would be to use the Platinum edition which should have a harder cup surface. I have not heard them so I don't know if they sound better.
      
      I do know that grade 5 silicon nitride (ceramic) balls sound better here than the stock balls or tungsten carbide balls and are available from McMaster-Carr for $5.30 each (part # 9576K38).
      - thanks for that information. nt - dave c 13:39:08 07/31/07 (0)
        
        In Reply to: RE: Strange store... posted by Dotsystem on July 31, 2007 at 03:45:12
        
        bleep
RE: I'll second that - benie 19:10:49 07/28/07 (0)
The FIM 305 are great.

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