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Old 1st June 2004, 08:47 PM   #1
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Default One more DIY TT is born

Right from the kitchen table...
* Splitted 16 kg CLD platter
* Ladegaard
* Teres motor/controller
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Old 1st June 2004, 08:57 PM   #2
TNT is offline TNT  Sweden
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impressive - congrats !

Looks amazingly good.

Where did You eat during the process ;-)

/
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Old 1st June 2004, 09:00 PM   #3
BobM is offline BobM  United States
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Looks like you cut up the kitchen table to make that massive plinth! Very nice.

Now for the all important question ...

... how does it sound?

Enjoy,
Bob
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Old 1st June 2004, 10:25 PM   #4
rif is offline rif  United States
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Default Re: One more DIY TT is born

Quote:
Originally posted by livemusic
[B]* Splitted 16 kg CLD platter
What's a CLD platter?
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Old 1st June 2004, 10:52 PM   #5
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Hi,

Congrats, Michael....Beautiful job.


Quote:
What's a CLD platter?
Constrained Layer Damping.

Cheers,
__________________
Frank
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Old 2nd June 2004, 04:19 PM   #6
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Default Re: Re: One more DIY TT is born

Quote:
Originally posted by rif


What's a CLD platter?
Constraint Layer Damping is extremely efficient method to absorb vibration by placing a viscous layer (sorbotane in my case)between two rigid ones (acrylic and aluminum on upper plate).
Of course, for unsuspended TT the whole assembly rigidity is a must (my upper acrylic plate is directrly coupled to subplatter by means of three bronze cones).
Note, the central pin is decoupled from bearing for sake of bearing-induced vibrations isolation.

Quote:
Originally posted by BobM

Now for the all important question ...
... how does it sound?
Well, in terms of isolation from external and stylus-induced vibration it is close to perfection (IMHO), it means deep black background without a shadow of HF roll-off.
Teres motor/controller does extremely good job: piano sounds are rock stable, no traces of wow.
As for tonearm/cart synergy, I feel my high comliance Grado Statement Sonata is not completely happy with Ladegaard's lateral high mass: occasionally a low frequency resonance-like artefacts (call is distortions) may be heard on certain records (complicated orchestral music). I think I shall give Denon 103 a try (looks like a general consensus here) - stay tuned...
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Old 2nd June 2004, 04:26 PM   #7
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Waouww
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Old 3rd June 2004, 05:55 AM   #8
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How is the platter bearing made?
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Old 3rd June 2004, 07:22 PM   #9
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Default bearing

Conventional type bearing: bronze housing, SS spindle, SS ball, delrin thrust plate. Lower end of the housing is closed by threaded plug with O-ring sealing, I just tried to keep manufacturing simplier. The bearing is placed well within the platter, in order to keep platter CofG closer to the bearing surface geometrical center.
Aircraft grade hydraulic oil of low viscousity is used, since the viscous friction is substantional, due to very tigh fit and large bearing surface area.
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Old 17th December 2005, 03:48 AM   #10
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What's the biggest LP your tonearm can play?
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