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Old 30th October 2002, 01:35 PM   #11
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Peter,

Have you tried hammering some nails through your fingers and then rest the transport on their points?

Ok,ok,I'm out of here.

Cheers,
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Old 30th October 2002, 01:36 PM   #12
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bm_mode

I think you are correct, amplitudes would be less with higher mass.
My thinking is,with a more complex platter construction and good
choice of materials it is possible to achieve faster decay of
resonances and higher natural frequencies-compared to e.g. a
plain acrylic plate.
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Old 30th October 2002, 06:58 PM   #13
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fddegrove

Thanks.Why do you hang aroud here?
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Old 30th October 2002, 07:09 PM   #14
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Richard,



Quote:
Have you tried hammering some nails through your fingers and then rest the transport on their points?
Is this what you mean?

I was making a joke between Peter Daniel and myself.
I'm pretty sure he understood it,after all , once in a blue moon we have a good laugh as well.

Cheers,
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Old 30th October 2002, 07:18 PM   #15
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I never miss an opporunity for a joke either. After all that's why we are all here, right?
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Old 30th October 2002, 07:21 PM   #16
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Hi Peter,

See you later,
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Old 30th October 2002, 07:49 PM   #17
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Peter,Daniel

O.K. now I know what diyaudio is all about.
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Old 30th October 2002, 08:07 PM   #18
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I believe, that in order to be able to create a great design a sense of humor is necessary. Being too busy with details, one might miss a big picture.
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Old 30th October 2002, 09:30 PM   #19
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Now I REALLY understand!
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Old 30th October 2002, 09:36 PM   #20
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Getting back to your deck, did you try hard suspension?

In case you didn't see here's the link to my deck: CD PRO 2 - The making of a high end CD Transport

I tried soft suspension, but achieved better sonics with hard suspention. It was not easy though and I had to experiment a lot with supporting platform. Finally a sandwich of two granite slabs with blown rubber in between worked well. My inspiration came from a man behind 47 Laboratory:

"The platform/casing of Flatfish is a 2/3 inch thick, machined aluminum board. All the driving mechanisms, pick-up mechanisms and the circuits are directly mounted on this one piece of aluminum board.
The huge difference between the mass of the mechanisms and that of the platform (150g against 1200g) enables to cut off the vibrations caused by the slight off-centering of the disks and the tracing mechanisms returning to the bit-tracing lens itself, allowing us to minimize the amount of servo control dramatically.
This rigid and compact structure of the platform has a very small surface area to receive the vibrations, and its large mass helps to reduce the vibrations smoothly and effectively without any extra damping or suspensions.
As a result, storage of vibration energy was minimized, letting us achieve a refreshingly quick transient response. Compared to the conventional box-type chassis/casings, this platform is almost completely free from any stress of construction. Now, you can hear how much harmony and bottom-end information was obscured under those mechanical stresses."
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