ZYX Compilance

Informative article, thanks

Using the above to calculate compliance to get a resonance frequency of 11 I need the total cart + arm mass to be 8.2g since the cartridge itself weighs 8.6g this is impossible.
Next question, what tonearms are being used with Zyx carts with the silver base?

I found this on Vinly Engine can anyone confirm 

Zyx is a Japanese maker and Japanese makers usually specifies their compliance at 100 Hz, so if we say a static compliance of 15 @ 100 Hz, this means a dynamic compliance of roughly 7.5 @ 100 Hz. Now, to convert to 10 Hz we use 7.5 x 2 or x2.2 and get 15 or 15.4. So a static compliance of 15 @ 100 Hz is roughly a dynamic compliance of 15 @ 10 Hz.

@chakster
I do have a Zyx cartridge & in my manual it simply says 'Compliance' it does not state whether it is Dynamic or Static or what it is measured at either 10hz or 100hz, hence the reason for starting this topic.
If the compliance is how you have calculated at 25.5cu & using your ETA arm, according to the manual its effective mass is 22g with a 6.5g cartridge, I don't know the weight of your 4D but my cartridge weight with SB is 7.9 so this would increase the mass with the ETA to 23.4g using the calculation in the article link by rdk777 we get an RF of 6.5 it is also stated in this article that the desired range is 9-11 so your combination is well outside the range.
rdk777 states' I'm currently using the ZYX Universe II Silver base (8.2 gm) w/ the Kuzma 4P (effective mass - 13 gm)' if we use these figures to calculate RF we get 6.8 another combination that works well according to rdk777 but is well outside the range.
If your cartridge is working well in your ETA image how much better it would be in a low mass arm. If we aim for an RF of 10 right in the middle of the desired range using your calculation of 25.5 compliance & my cartridge weight of 7.9g I would need an arm with effective mass of 2.1g.I would really appreciate your recommendations of an arm in this range.

Thanks, quote as stated by GT Audio

EQ Compliance horizontal - 15×10-6cm/dyne
EQ Compliance vertical - 12×10-6cm/dyne

Recommended tonearm effective mass 12grams minimum/20grams maximum

With the TB or SB headshell added it will be:

+TB - recommended tonearm effective mass 9.5grams minimum/17.5grams maximum
+SB - recommended tonearm effective mass 7grams minimum/16.5grams maximum.

Therefore a tonearm with a medium effective mass is recommended for all of the above.

Could someone with a Zyx cartridge and a test record please send in their results. This seems like the only way to get a definitive answer.

@chakster
The specs I was referring to were for the Technics EPA-100 it was just a typo.
If we take your Reed example with cart + arm = 25.9 (arm18g) with a compliance of 25.5 the Rf would be 6.19.
Could you do the equation and tell me if you get the same figure.
Surely if the compliance is 25.5 you would need a very low mass arm.