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2020 update : JC Verdier La Platine

A recent encounter with a JC Verdier dealer as well as a recent Audiogon discussion thread led to the start of this thread. He was in my house updating my La Platine which had been in storage for ten years with thread and oil. While he has high regards for the deck, his newer clients nevertheless prefer a Techdas iii than an 'old' La Platine. Given the proliferation of expensive decks in the past dozen years, La Platine has become very much under-appreciated. 

It's clear to me that the influence of the La Platine is everywhere to be found. Specifically, the magnetic suspension system that was employed 30+ years ago. Even SOTA offers their newer decks with mag. lev. features. And if you read this review: https://www.callas-audio.nl/Callas%20Platine%20Mod%20Kit%20Review.pdf, the Continuum Caliburn uses the same concept, which was not acknowledged in Fremer's review, albeit with more sophisticated , and expensive, execution.

It is also clear to me that there is much misunderstanding of the workings of the La Platine. I for one have contributed to this. The motor of the La Platine, for example, has been much maligned. The thread drive is another aspect of the turntable that have been described as inferior. With regard to the motor and thread drive, I have been set straight by Chris @ct0517 and Lyubomir @lbelchev. Experimenting with the different types of silk threads, the tightness to the platter  and a renewed understanding of the soundness of the Philips motor have been rewarded with better dynamics and transparency. 

The funny thing is that during the past two years of re-engagement with audio, I have questioned ownership of every components in my arsenal except the La Platine. It has always been a keeper. I wonder if La Platine owners would contribute to celebrating this 'old' deck with tales, advice, and insights?

Cheers!
ledoux1238
pani
1,217 posts
 
@ledoux1238, I get your sentiments. Since you are happy to explore and experiment, here are some more things I tried with the Verdier:

1. Changed the motor from the low torque philips to a high torque Maxon motor. Currently these are used in top TTs like Kronos. I did not change the motor housing. I just replaced the motor and added the feature to connect a battery based 12v power supply to it.

2. Initially I used a deep cycle 12v battery (used in high end health care systems). Their voltage does not drop or fluctuate.

3. I also connected a high quality capacitor bank between the battery and the motor. At each step in this experiment, the sound did improve but it did not change the fundamental character of the presentation.

4. I also tried photovoltaic cells for the purest possible power to the motor.

5. I added a 30kg flywheel in between the motor and TT for higher energy drive. 

Here is a system of a friend of mine who also uses Nouvelle platine verdier and incorporates all the tweaks I mentioned and a little more. Please watch the video till the end:
https://www.youtube.com/watch?v=qkk0zoSBSJw
lbelchev
64 posts
 

1. Changed the motor from the low torque philips to a high torque Maxon motor.
@pani,

The motor used in the Platine Verdier is a powerful, HIGH torque, LOW inertia, core-less DC regulated motor.
pani
1,217 posts
 
No, it is a low inertia Philips motor. The maxon is about 3 times more powerful
lbelchev
64 posts
 
Low INERTIA is very very different from low TORQUE!

You can check: HIGH TORQUE MOTORS WITH LOW INERTIA :-)

"First of all, it is "low inertia" motor. In the case of Philips unit, that term refers to a very special technology. In "low inertia" motor, the turning part-the rotor-consist of a cooper coil, the turns almost parallel to the rotation axle cutting the field lines of the magnetic circuit, excited by a permanent magnet which is totally fixed. The weight of the rotor is reduced as much as possible, so the inertial tendency is small relative to the work provided by the motor."
J.C.Verdier

We can see this brilliant principle in 2020 - CS Port Analog Disk Player LFT1 (£48,000.00): "In LFT 1, the rotation control is not performed, and the constant speed rotation is left to the high moment of inertia of the 27 kg platter, creating a rotation free from unnecessary vibration caused by the control. Only the positive direction force is applied from the motor, but by using a coreless motor with LESS MOMENT OF INERTIA, the influence of the vibration is reduced."

pani
1,217 posts
 
Thank you @Ibelchev , I get your point.
The sonic difference between the Philips and Maxon was not much but I wanted a more powerful motor since I intended to try the flywheel experiment.  
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