SOTA vacuum or no?

I am a big fan of vacuum clamping, but, a few words of caution are in order here.

I run the vacuum pressure as LOW as possible -- just enough to pull the record flat to the platter -- in order to minimize the possibility of damage. I know of claims that the vacuum damages records, either by pulling plasticizers out of the record or by grinding in dirt that is on the record or the hard platter surface. When I first got my table, I ran the pressure higher than I do now. For some records, I notice more clicks and pops on the side that was less frequently played. Some of the extra noise was ameliorated by a good cleaning, but, I cannot be sure I was able to cure all of it. I now run the vacuum pressure on the low side, and I keep the platter surface very clean. When not in use, the platter is covered by a sacrificial record used as a dust cover (a Charlie Rich record someone gave to me). I also use a microfiber cloth to clean the surface once in a while. I have since had no issue with noise.

Most of the comment here as been about the vacuum curing warps. It will certainly do that (provided you jack the pressure up for those particular records), but the real benefit is that the intimate contact between the record and a platter dampens vibrations imparted in the vinyl by the needle tracking the groove. ALL records, not just warped ones can benefit from such dampening.

Kudos to Larry!!

As to vacuum seal of warps.I find some warps need a flattener,based on how warped the disc is.I've made a DIY flattener for thirteen bucks,but it does not "do" every Lp perfectly.I'm still experimenting.

As to pressure level,my Sota Cosmos has an automatic sensor which adjusts the vacuum seal to minimum level,once the seal has been made.It seems like a very good idea,but if a warp is bad you are not going to flatten it out.
What I do then,is pinch the air hose to fool the pump into thinking it has made a seal.The pump automatically goes to minimum vacuum level,and the Lp does not go dead flat.I seldom need this.
As to noise issues....I have had SOTA vacuum tables for over twenty years,with "absolutely" NO noise issues!...EVER!!

I do NOT use an intermat on my platter,because it takes away inner detail,and dynamics....BUT...I am very careful about keeping the platter surface very clean!

I bought a cheap make-up brush(the kind women use to put on stuff,on face)and brush off platter surface(AND SEAM BETWEEN PLATTER AND RUBBER LIP)after each listening session.I keep the platter/table covered with a cloth,when not in use.....CLEAN,CLEAN,CLEAN!..."Wolfmother" would sound great -:)
Best

Well,while on the vacuum subject,when I mentioned no noise issues,I was referring to no noisey LP's,though my pump runs dead quiet too!I'm talking CD player quiet.

I do have non vacuum using friends,and cannot go to the level that Raul has,in stating the difference is an "order of magnitude better".But I like a vacuum seal,if given the choice.

It IS technically "better",but I have to be a realist as well!I've heard superb set-ups with no vacuum feature,but it is one consideration,out of many.

Yes,I think SOTA makes a superb vacuum table(original thread subject),at really fair pricing,and they work for a LONG time,trouble free.The company is "now" making the best products they have ever put together.Really close tolerances,and gorgeous to the eye,especially the no longer standard issue Black Gloss Fountainhead plinth and vacuum pump housing,that I have.....Also,when Sota products are reviewed(particularly the "newest" Cosmos,which is in series IV already)it amazes me how incomplete the review usually is!!
This usually indicates the amount of time a reviewer has spent with LP replay,in their lives(or just how little space is allowed for in depth reviews these days),and it "means something"!...If you are new to LP spinning,you certainly will not cover all the bases,on a superlative table,if you review it.

I personally want to know about much of the design,and how it got there.Why certain material choices were made.Why a suspension,or not.Why a specific motor unit,or why a nested platter,or arm/pillar mount etc,etc!

Good Example: The review in HiFi Plus(which was the opposite of Stereophile,in how the reviewer liked the product)of the Grand Prix Monaco was a GREAT piece of descriptive writing/information!!I should know,because I read it(alot)during a day of jury duty,just sitting around!

This was a "thorough review",and because it was SO good,I "got it"(the point,not the table),and came to appreciate the product,for what it is(a great table)!!

It even got me so inclined as to seek out the "white paper" on the table,which was quite educational,and extremely revealing as to why "some" well thought of designs,"kinda stink",if one accepts the design criteria of the Monaco.

SO,when I view the "latest" work coming from the old/established/often overlooked SOTA,I have to laugh,as "these guys" have NOT been asleep at the wheel!!

They STILL make the use of Bob Fletcher's abilities,and he was a "real" scientist/designer.The new(actually ownership for over a decade)mfgr is a skilled machinest,to the highest degree!!Hand made,to the max!!
The latest stuff is in line with many virtues(though employeed differently)mentioned in the Monaco White paper(which I enjoyed reading)....Different philosophy,but just as valid in design execution,and performance!

Yet, one of the finest set-ups I have ever heard(just basic inner clamp over the spindle)was using the Big Basis Debut,to be completely honest!!...No vacuum,but OH,BOY did those big Infinity speakers come to life(using my own LP's).And I had heard the Infinity speakers many times before.

Just my two cents.

HI Raul

"That was one of my first impresions when ( many years ago ) I try for the very first time the Vacuum hold down record but I learn that that " air " was not a real sound in the recording but most a distortion part with out Vacuum"

How do you know what is part of the recording and what is not?? I hear "air" all the time if i listen to a live band.
There is no vacuum hold down of vinyl when masters are being pressed.

I am not here to argue vacuum or no vacuum hold down.

I would suggest each turntable designer has maximised his design to suit his table. eg no doubt a Basis or SOTA would sound better with vacuum hold than without - otherwise why offer it.
Other designs with no vacuum hold have equally impressive sound.