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In Reply to: RE: VPI has a new pltatter ? posted by mondial on May 24, 2015 at 14:55:41
There's a gap between the top and bottom platters. A belt-drive motor spins the lower segment while magnets link the top and bottom.
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It looks like the kind of product that would more likely originate in a marketing department than engineering, even though VPI is probably too small for that.
Keep it simple. Do it well.
Really, that is a pretty dumb statement considering the reason for making it was to get the Direct Drive sound at a more affordable price.
The reference is reel to reel tapes played on an Ampex ATR-102 and the Classic Direct, Class A+ with the lowest wow-flutter-noise numbers in the industry. The complaint is that it is to expensive and looks to plain. Therefor the Avenger is made for much less money, specs almost as good, and a very interesting look.
And the answer is--Made by a marketing dept!!!!!!!
Bite me.
HW
Hey, Harry:You seem to be getting more ornery in your old age. Or, perhaps not! ;-)
Edits: 05/29/15
for a belt drive I would prefer the Verdier, I think one elastic coupling in the drive train is is enough undesirable stuff. Having a belt drive and something that can move in respect to the stylus at different rate,..... I don't know..just does not give me comfort. if i want a maglev wonder, i would want an old JVC TT 101 or better yet a JVC TT 801.
dee
;-D
True terror is to wake up one morning and discover that your high school class is running the country.
quote by Kurt Vonnegut
Luxman used magnets to remove much of the burden of the platter on the PD-444, 441 and 555.
"Hope is a good thing. Maybe, the best of things. And no good thing ever dies."
the better comparison of this new VPI table is to the EAR tt or the Transrotor turntables with optional mag drive. Like you infer, the Verdier only uses magnetics to levitate the platter which is then driven by a belt directly. I don't like the extra helping of compliance in the drive system, either. This is a case of more isolation is too much isolation. I own a JVC TT101, although I cannot get the SOB to run properly. Nevertheless, I cannot see any evidence of maglev in the TT101. So far as I know, the TT801 is a TT101 with added vacuum hold-down for the LP, but I've never seen a TT801 in person. Perhaps you were thinking of the Kenwood L07D, which does use magnetics to levitate the platter, partially.
Stand corrected. Hell then i take the Kenny, no problem with that.
dee
;-D
True terror is to wake up one morning and discover that your high school class is running the country.
quote by Kurt Vonnegut
how many ways can we design a TT, let me count the ways.
Does look very nice & I'am sure it spins an LP very nicely.
Is it that the table is suspended in air by magnet repulsion?
Not the entire table, just the platter. The two platters share a common bearing post to maintain centering, but the top platter is vertically suspended by magnets from the bottom belt driven platter. The top platter is driven by magnetic coupling with the bottom platter, but they can be turned independently to see that they are not mechanically coupled.
I wonder about the stability of speed in such a system. ...and yet, Harry must have worked it out. I'm pretty sure all those Classic platters can be updated...I wonder about the rim drive....it would have to drive only the lower platter. I suspect it will remove the vertical noise component, but wonder how much there is of this. If your turntable is sitting on a very solid table on spikes, I don't suspect there is too much noise to remove. We'll see how this progresses. If it works, I'll probably update my table.
I would hazard a guess that you would need to upgrade the whole Classic platter system to a magnetic drive due to the fact that the Mag Platter must have magnets installed, balanced and then mated with the mag drive platter via a more complex bearing assembly.
I would like to see VPI offer a magnetic suspended bearing platter and keep the drive (belt or rim drive) the same.
If the two platter share the same bearing, how are the two platters isolated?
I understand the benefits of a magnetic suspended platter, but not magnetic drive platter system.
I wounder about flutter. Nothing really keeping the two 'tight. And ifthe magnets are strong enough to keep the two parts tight, with no flutter.. Then the magnetic field would be awfully strong up to the cart.
A solution with more issues than cures.
I would want to see exactly how long it takes to get down to zero flutter/between the two halves after changing a record 'on the fly'
I am not knocking VPI.. I just do not see any advantage, and plenty of problems.
Thanks Mel for the link
Mondial
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