Tonearm mount to the plinth vs arm board vs rotating arm board vs isolated tower

Dear @halcro  : The failed concept is failed by physics law. That we like it the listening experiences through it does not means is " rigth ".

In the other side your post making comparison about is useless when the comparison you wanted show was with different TT, different tonearm and even different LP track and probably not exactly the same accurated alignment set-up.

R.

Dear friends: """  use isomerics or the like between them and the plinth that **will** result in coloration. If carefully hard-coupled to the plinth the coloration is reduced. But using an arm pod is problematic as its likely that it will not be perfectly rigid and dead as the application requires. """

@atmasphere  is rigth with his statement that in theory is true but things are that several professional TT designers/manufacturers choosed the arm pod alternative as Kuzma between many others.

Could be almost imposible for any of us detect those " colorations " atmasphere speaks because we need that the same TT can " accept " to run the tonearm/cartridge with an external arm pod/tower and at the same time that that same tonearm/cartridge can be mounted in the TT with integrated arm board to its plyth. Measure it can be easy but really hear those colorations differences is another way matters.

Way before Halcro or other Agoner goes to the TT nude type of set up I did it with my Denon TTs and latter on with the Technics. With the Denon the set up were really nude no plinth at all and obviously external arm pod and quality level performance differences against a plinthed same TTs was really high and easy to detect it.

It's not true that in a DD TT using any kind of anti-vibration mechanism/palttforms the self generated resonances of that TT does not exist: always are there but we have a very high resolution room/system and the level knowledge to know what to look for through a evaluation whole process.

Later on on those DD TT's I decided to mount it nude seated through tip toes in a 50+ kg of 3 separated/different ( for each TT. ) lovely stones marble, onyx and granite and @dover  is rigth : granite " ring like a bell " and I know because my first stones plinths were not 50+kg but around 20kg and that's why I decided to go way higher.

Yes @dover  like you I prefer to listen that audio signal lower than 100hz.

Obviously that the best option for the OP is to go with the orthodox way mounting the tonearms through the plynth but at the end and as I said we can't be totally sure that in the external arm towers we can detect the added signal colorations. So his question is really open and up to him.

Regards and enjoy the MUSIC NOT DISTORTIONS,
R.

Dear @atmasphere  : You are rigth and I know it because I used and use somerthing similar in my big loudspeakers. This is what you can read in my Agon virtual system:

"""  LOUDSPEAKERS.

ADS L 2030: This is a Full Range Professional Monitor that I own for many years.

These L 2030 was designed by Mike Kelly ( Aerial speakers ) and till today it match all my priorities.

It is " heavy " tweaked to do that: first it has " three hands " ( internally ) of a insulation/antivibrational treatment ( like a white paint. I can't remember the ingredients. ) from Acoustical Magic Company ( it works marvelous ) inside all the box ( a big one box: 58-5/8" ( H ) x 27-1/4" (W) x 13-1/8" (D) ).   """#


Well, I use it too in the Denon/Technics platters and Denon's metal chasis.

Regards and enjouy the MUSIC NOT DISTORTIONS,
R.

Dear @kanchi647 : 1+  with millercarbon advise.

Regards and enjoy the MUSIC NOT DISTORTIONS,
R.