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Suspensions on turntable...really effective?

Been wondering about this, so did some research, but was surprised I couldn't find any that categorically says that turntable suspensions really isolate/substantially reduce outside vibrations, resonances, etc.

Any reference out there you can point out?

Cheers
diamondears
rcprince
3,070 posts
 

Basis uses a combination spring and fluid damped suspension in my table and I believe most of their line.  AJ Conti (the man behind the company) has many technical papers about his products on his website, including the suspension system he uses--since you asked for it, see this link: 

 http://basisaudio.com/docs/SuspensionTP.pdf

There are plenty of other ways to design a turntable, as evidenced by the many fine products out there; this is AJ's take on the subject.  As I posted before, this suspension is very effective, IMHO.. 

ct0517's avatar
ct0517
2,041 posts
 

It can be plucked while the record is playing, and so far no listening can tell I am doing it.

lol
Sorry for the error and the others in my previous post.

That’s it... out with these new Arabica beans my wife bought me - in again with the Costco Zavida. The Arabica brand aren’t kicking in fast enough.

correction to the previous post.

It can be plucked while the record is playing, and so far no "one" listening can tell I am doing it.

******************************************************



Geoffkait - As a designer of isolation devices since Jesus was a Boy Scout


@Geoffkait and all manufacturers, designers, dealers, distributors, and all those in the audio business...... posting on Audiogon.

Why don’t you guys take the opportunity to show your company name in your monikers box so all like myself, non professionals, can see your professional affiliation?

Just sayin...

Kudos to those like PBN Audio who have already taken this opportunity.
ct0517's avatar
ct0517
2,041 posts
 


diamondears
What I’m looking for is some white paper or really comprehensive post or thread discussing the merits (and demerits) of suspensions on turntables.


Hi diamondears

imo - You will always get only one view, opinion when reviewing white papers.

A recommendation, I did this myself and it worked for me. Talk directly with the TT manufacturers whether you own their table or not. They will send you the information you are looking for. You will discover the levels of study and analysis that they went to.

A TT itself is a Sum of its parts - imo

I like this definition from the internet.

A concept in holism. Related to the idea that the total effectiveness of a group of things each interacting with one another is different or greater than their effectiveness when acting in isolation from one another.


It conveys the meaning to me that you can not just look at one aspect of something - especially in this case where we are dealing with vibrations, resonances. Too many audiophiles, including myself can get buried too deep. Go too far down the rabbit hole.


fwiw
I had many conversations with JC Verdier prior to and after my purchase of La Platine Granito Vintage thread model. It has pneumatic shoes and a granito plinth.

JC Verdier

"Granito is a material composed by little pieces of marble of very different origin agglomerated inside a mold with cement. Machined and polished. The resonance of the plinth with its suspension is about 5Hz and it is well absorbed by the air cavities."
some pics of it here.

http://www.jcverdier.com/ADSL/platineVintage.html

diamondears - Re magnets, when the magnet moves, so does what’s on top of it?

Not sure I follow what you mean here. Are you referring to my previous post on La Platine ?
On La Platine, the bottom magnet is part of the plinth. The top magnet is part of the platter. There are many pictures showing both ends at this link.
Just scroll down the page.

http://www.jcverdier.com/ADSL/platineV.html


jperry
2,448 posts
 
I suggest you look at the Kinetic Systems website for information on vibration control. You should also Google search Vibraplane and look at the article from Positive Feedback that will be in the search.
lewm
13,012 posts
 
Dear Ct, What GK was referring to regarding the tendency of magnets oriented such that like poles are facing each other to want to slide sideways, around rather than toward each other, is indeed happening in your Verdier turntable.  Only the mating of the male and female elements of the bearing holds the platter in proper position over the base; otherwise the platter would slide off onto the floor or shelf.  This means that for better or worse there is always some additional friction generated, in the horizontal plane within the bearing assembly.  No criticism is intended; it's a fine turntable for sure. No design is perfect.

Likewise, every magnetically levitated shelf I've seen has some "stops" built in to it to prevent side to side motion of the levitated element of the shelf.

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