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

The mounting of the platter bearing in the plinth will be thus coupled as rigidly as possible to the mounting of the tonearm. If it is not, any vibration at all can be interpreted by the pickup (arm and cartridge) as a coloration.

Sorry Halcro, you fail to understand that both can be true.

Dohmann claims to provide BOTH isolation AND positional stability.

A very heavy outboard arm pod that sits on the same support structure as the plinth itself is probably an acceptable compromise as far as coupling.

Here is the engineering principle that MUST be observed when designing a plinth for a turntable:
The plinth must be as rigid and as acoustically dead (damped) as possible. The mounting of the platter bearing in the plinth will be thus coupled as rigidly as possible to the mounting of the tonearm.

By the way, smart guys (Atma-sphere, Richard, and Mark) can differ in opinion, which does not make the persons on the other side of the argument "amateurs".

Keeping the two parts still relative to each other isn’t easy.

I echo Lewm's comments re the Helix TTs.
Mark Doehmann's design is innovative and unique. Way cool. I have heard them a number of times and they are exceptional.
I have also met Mark twice. He is totally open to sharing his extensive knowledge about TTs and the industry in general. A true gentleman.

The flywheel, platter/plinth, & tonearm tower are on the same platform, while the motor is on a separate platform.

utilises SPZ which dissipates any energy between 4 and 100hz internally at a molecular level, but is completely rigid.

Granite rings like a bell due to its crystalline structure.

The vibration isolation performance for both platforms is made possible by its unique technology, consisting of piezoelectric sensors, actuators, and control electronics. These carefully engineered components (Made in Switzerland) allow the platforms to dynamically respond to vibrations in the environment, enabling sub-hertz vibration isolation (starting at 0.5 Hz) in all six degrees of freedom.

How does the stand reduce self noise in the TT structure itself?

What weight did your granite base come in at?

Your herzan cant move fast enough to remove all vibration - its superficial.

In the case of the first you have a subjective means to winnowing out how a separate arm pod is a failed concept;

Thank you for reminding me of why I dont use rubber belt drive turntables or direct drive turntables - the swirling and lurching from note to note of a platter driven by a rubber band vs the grainy grey wash of the direct drive as it interminably tries to calculate the correction speed required on ancient "software" using 1970's electronics, not to forget that a can of Baked Beans probably has more structural integrity than the motor housing on the DD.  And to think you can even hear it with a low res MM. Thanks again for reminding me.

Can't do...it's raining in New Zealand....videos can't show shit....my finger's broken.....

Dover
04-26-2019 7:38pm
I have been following your cartridge postings - they are great. I have the Glanz MFG61 and was interested in getting a flavour of the 610 you have.

Dover
05-23-2019 7:49pm
And to think you can even hear it with a low res MM.

Dover
06-06-2019 4:57pm
I preferred both my V15vxmr & V15vmr with a brazillian and a dab of superglue on the stylus holder - as used in my Eminent Technology ET2. Accurate tonearm set up, properly grounded TT & clean records obviate the need for heath robinson type solutions.I preferred both my V15vxmr & V15vmr with a brazillian and a dab of superglue on the stylus holder - as used in my Eminent Technology ET2. Accurate tonearm set up, properly grounded TT & clean records obviate the need for heath robinson type solutions.

Dover
05-23-2019 7:49pm
Halcro - thanks for the Decca post for Frogman and I - I have been a bit busy to respond - the music was great.

Dover
07-22-2019 7:39pm
Hi Halcro
for me on my cheapo ear iPhone plugs -

Shure V15/III/SAS - full bodied but coloured sound

Shure Ml140HE - slightly recessed in the vocals, clangy in the upper mid area

Shure Ultra 500 - the least coloured by far of the three, the balance across the frquency spectrum far more even, and more resolution. On crescendos this cartridge holds that balance. This is significantly better than the other two to my ears, more open, more balanced and less coloured.

If you really want to hear the Ultra 500 at its best you need to buy yourself an Eminent Technology ET2, a significant gain in performance cf the Dynavector/FR64 to be sure - I own all 3.

Dover 
05-12-2020 12:52pm
And to think you can even hear it with a low res MM.

Dover
10-30-2019 8:05pm
Great music. Beautiful.
In a nutshell firstly comparing the Palladian to the Decca, again ibuds, the Decca wins, most notably I can hear the chest and body of the female choristers, even individually. On the Palladian it sounds like they are singing from the top of their throat - no chest. The Decca more accurately conveys the full weight of the choristers and the room acoustics.

Then comparing the Sony XL88D to the Decca - wow. More transparent and the majesty of the performance and the completeness of the full orchestral spectrum conveyed by the Sony is fabulous. There appears to be more chest/body with the choristers from the Decca, but the vocals from uppermids to top end on the Sony appear far more transparent. As the full orchestra comes in the Sony is simply wonderful, the most complete cartridge for me of the three..    

At this point I am done with comparisons - could you please just send me the Sony for Xmas. Now back to the music....

Dover
05-12-2020 12:52pm
Thank you for reminding me of why I dont use rubber belt drive turntables or direct drive turntables - the swirling and lurching from note to note of a platter driven by a rubber band vs the grainy grey wash of the direct drive as it interminably tries to calculate the correction speed required on ancient "software" using 1970's electronics, not to forget that a can of Baked Beans probably has more structural integrity than the motor housing on the DD.