Audio Technica AT 666 vacuum disc

@pryso :       Sorry: you can’t play........

Dear @pryso  : Nice to meet you again.

On your post it was not me. With out the vacuum you can play a LP because unstability/waves with the perimeter rubber and because you have to change the VTA/SRA .

R.

Dear @best-groove : Totally rigth in the Pioneer  issue, here the P3:

  http://www.thevintageknob.org/pioneer-Exclusive_P3.html


In the other side about something that you have to take with any vacuum LP hold down  is to mantain the platter clean to avoid that minuscle " dust " stay clamped for ever in the LP grooves at the same time that the LP side face-down to the platter be cleaned to protect it and to protect the rubber perimeter.

R.                                                                                                                                                                                                                                                                                                                                                                                                                                

@lewm : In this link please go to my last post and in the link down there download the 82-83 catalogue:

https://forum.audiogon.com/discussions/who-needs-a-mm-cartridge-type-when-we-have-mc?page=272

and look the pdf 22 page where you will know on that 666 item.

R.

@lewm  : It's weigth.

R.

Good  !

R.

Dear @best-groove : You can use that nylon line for fishing rod or aguitar chord and it has to hold around the rubber with some kind of thigthness. What is difficult is to make the knot in the nylon new thread for it be/stay tight against the rubber but not so tight that the nylon that tear/rip the rubber. if it’s a little loose then the vacuum hold down the LP for short time only. So not an easy task.

You need to check too that the 666 valve is running ok with no loose and that stay at the rigth position when closed to mantain the vacuum hold down.

R.

Dear @best-groove : I own 3 of them and certainly is way different to a reflex clamp that can’t makes what the 666 makes, I own too reflex clamps.

The 666 should last around 25-30 minutes. Time to time you have to clean the perimeter rubber with the like leather square cloth that comes with and you have to be sure that the LP side that looks ( face down. ) to the 666 is clean to avoid that dust be " clamped " to the perimeter rubber. I own a manual air pump and the battery powered one that sometimes does not works as we need it but you can use any air pump for that task.

Now, 7-8 minutes is way low time and you have to check this: the perimeter rubber is holding by a nylon tiny ( like a lasso. ) around all the inner perimeter of the rubber that hold the LP. That’s that you have to take the 666 in your hands and seen at the center perimeter 666 edge if that nylon " part " is still there around all the inner rubber perimeter. Trogth the time that piece of nylon could be broken and then happens what you are experienced but with out have in my hands I can’t help you in better way.
maybe some one can " translate " what I posted due that my english vocabulrary is not adequated.

Btw, the 666 makes a difference for the better.

Regards and enjoy the MUSIC NOT DISTORTIONS,
R.