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Post by Stratmangler on Oct 7, 2014 7:14:25 GMT
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Post by ChrisB on Oct 7, 2014 7:15:56 GMT
I don't think that's big or heavy enough for this purpose, Chris
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Post by MikeMusic on Oct 7, 2014 7:51:15 GMT
Concrete usable ?
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Post by MartinT on Oct 7, 2014 9:23:56 GMT
Thanks, Chris. That would have been interesting if it was 45 x 36cm and a little weightier. |
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Post by pre65 on Oct 7, 2014 9:37:00 GMT
Thanks, Chris. That would have been interesting if it was 45 x 36cm and a little weightier. Try a local stonemason, or monument mason for a nice bit of granite, or marble. An offcut cut to your size should not be uber expensive. |
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Post by MartinT on Oct 7, 2014 11:00:02 GMT
Gone a slightly different route and found a perfectly sized butcher's block in 40mm beech. Should do the job nicely, I hope. I can always add granite placements centrally to get the weight and balance just right on the maglev feet.
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Post by MikeMusic on Oct 7, 2014 12:08:07 GMT
I wonder if granite like items and wood will work differently.......
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Post by MartinT on Oct 7, 2014 12:16:03 GMT
Probably, but neither will resonate.
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Post by MikeMusic on Oct 7, 2014 12:21:08 GMT
Our next discovery !
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Post by MartinT on Oct 8, 2014 17:12:25 GMT
The Solution (Almost)
Having tried various permutations, this sounds best to my ears. A heavy beech butcher's block sat on three Maglev feet (arranged for level balance) with the Technics coupled to the block with RDC Cones only. So a coupled interface (Technics to block) and a decoupled one (block to system rack).
I get great sound quality and no bass feedback even up to 62dB preamp volume (2dB margin above the loudest level I play vinyl at). I will continue to tweak a little, but this sounds like a great solution.
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Post by John on Oct 8, 2014 17:19:35 GMT
Glad you found a solution
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Post by MartinT on Oct 8, 2014 19:55:11 GMT
I remain fascinated by the whole subject of repelling magnetic feet. See this excellent thread on the Wam which has given me fresh ideas... |
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Post by MikeMusic on Oct 8, 2014 20:11:35 GMT
This is either mad or the lengths we have to go to
No feedback when I tried RDC cones on the Tech
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Post by Sovereign on Oct 8, 2014 20:18:36 GMT
I've never tried the decouple approach, I've always used oak cones and Torlyte. I read a really interesting post from Jerry on AoS about his magnetic feet. One day I'll have to give it a go.
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Post by MartinT on Oct 8, 2014 20:19:08 GMT
RDCs directly on the Mana? What did you think? Try tracks 2 or 3 on Ry Cooder's BTYD. There's a very deep rumble (cutting lathe?) that seems to set it off. Of course, my speakers plumb the depths making it worse.
As for mad, it's actually fun and the bits cost little so I'm just playing/experimenting.
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Post by MikeMusic on Oct 9, 2014 8:33:20 GMT
I'll give it a go.
I have picked up that rumble, but no feedback
Must be my class Isobariks sorting that out !
I've got some packing I'm going to try at some time. Hard foam about an inch thick
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Post by speedysteve on Oct 9, 2014 10:59:51 GMT
I use 6 sorbathane feet (that rest on the rack shelf), under a sheet of birch ply that is laminated to a granite board, on which three StillPoints sit, which support the slate plinth of the SP-10.
I experimented to this solution many moons ago.
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Post by John on Oct 9, 2014 11:02:41 GMT
Magnetic feet on the salvation makes a positive difference compared to other isolation methods
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Post by MartinT on Oct 9, 2014 11:09:27 GMT
I use 6 sorbathane feet (that rest on the rack shelf), under a sheet of birch ply that is laminated to a granite board, on which three StillPoints sit, which support the slate plinth of the SP-10. Thanks, Steve. I'm not that far off in that I have the deck on RDC cones to the beech butcher's block (rather than your Stillpoints and birch/granite laminate), which sits on Maglev feet (rather than your sorbothane feet).
Things to try: sorbothane feet under the block rather than Maglevs (I'll try that tonight); DIY magnetic feet under the block.
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Post by MartinT on Oct 9, 2014 19:45:37 GMT
Meanwhile, the Maglev feet seem to have improved over 24 hours of being deflected by the weight of block/turntable on them. The headroom improved from 60dB to something over 62dB (I dare not turn the wick up any higher). I have a spare foot yet have no idea how to get inside to inspect the innards and see how it works.
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