DIY TT

@vinylzone , I really do not want to be a Pita. I think you did a great job building your own table. My intension was to suggest improvements no get into a battle.

Any vibration coming from the cartridge should be dissipated in the tonearm. Nothing should be getting to the plinth. Unfortunately, you have a unipivot arm which is much poorer at dissipating energy than an arm with fixed bearings. You have loads of noise getting to your cartridge. You could place the table on a MinusK stand but that is expensive. You can isolate the table on your own for much less money, a fun thing to do. 

As for my turntable yes, I had a problem with feedback because of a resonance issue given the prodigious bass my system can produce and the location of the turntable. That resonance has been entirely mitigated with a simple modification. The turntable is now dead silent under any circumstance and nothing phases it including jumping up and down in front of it and charging into the cabinet it rests on. Given it's suspension, magnetic thrust bearing and isolated dust cover it is as quiet as a turntable can get. Speed deviation is no more than +- 2 thousandths of a revolution. At this very moment it is +- 1 thousandth going slowly back and forth between 33.334 and 33.335. As it is also a vacuum table most of the surface irregularities have been sucked out leaving only spindle hole eccentricity as a pitch modifier. With a concentric record pitch is delightfully stable. As good or better than any turntable made. Not bad for 15K. I also get a bunch of kudos for my finger joints. Life is good:-)  

I also get a bunch of kudos for my finger joints. Life is good:-)  

Literally woodworking finger joints?
or figurative finger joints like give someone the bird? 😂

rauliruegas

Everything in the eBay address from the question mark on (including the ?) is irrelevant and is best removed as it's only purpose is tracking.

https://www.ebay.es/itm/194880213872 is completely adequate and preferable.

@mijostyn 

Battle?  I thought it was a discussion, an exchange of ideas and experiences.

I have the Sota Total Eclipse  package on my tnt, and it is a fine drive system. I may consider it for the DIY table. 

The following are a few statements made within a few previous posts, and then low and behold a subjective assessment is all that is required to produce reassuring evidence.

Ones ears are great tools, if the perception of SQ is a detractor, then a stimulation can be created to pursue a furthering of used methods to find a presentation that is an attractor, that can be achieved by a rethink on the methods used for mounting from the Rack Shelve up to the Platter Mat in use.

Out of interest during the Covid lockdown period throuout the globe.

There was a host of posts appear about the perception of improved SQ within systems be noticed.

The period was known as the unprecedented period for using modern HiFi, as the Grid Power Supply was not being drawn on in a capacity that is usual, and the reduction in Traffic and Transport Services had substantially reduced seismic activity, the seismic monitoring stations was reading this drop in vibration. 

Again a group of individuals across the world detecting change through subjective, evaluation, with a little bit of additional ambient environment being known of to make the claims seem feasible.

I do not recall any of the contributors to a thread needing to supply data from recorded measurements of their own systems to prove their reports being substantiated, the ears were looking good enough, and the trend for the reporting maybe produced an increased awareness to the attractive perception that was present.   

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Seems that your statement is mainly subjective and I think that you need to measure as @mijostyn posted, I' agree with him .

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Dear @vinylzone  : " I do not have any vibration or rumble issues in my setup, "

How do you know, how can you be so sure?

I ask because time ago I was sure that my analog rig was free of any kind of generated distortions related as what we are discussing here with you.

A few months ago my friend Carlos came to my place and we were listening MUSIC, mainly classic because he is a Simphonic Orchestra player. Obviously that he is accustomed to listen at high SPL as in a live even seated at near field. So in one LP ( non classic score but Asian drums. ) with SPL over 95db and with a low bass reproduction part the windows started to vibrate... after that I told you Carlos if that vibrations affected the other frequency ranges ( mid/high ) sk if he detected " something " and like me he told me that does not detected any kind of " problem " about.

I took that experience as a confirmation that my analog rig was safe of that kind of " events " 

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The most commonly used vibration measurement methods, which are using  accelerometers and laser devices as the methods to measure are not suitable for vibration measurement of micro vibrations. The methods referred to as Optical interferometry has the advantages of being a non-contact system and measures to a very high accuracy.

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