SME V and cartridge spacer

justmetoo...... the spacer weighs 3 gms

As for "Depending on the cartridge's compliancy (cu) it might even be better (or not?) regards the change of the resonance frequency." This is exactly what my question is about.
The cartridge I would use it with is the Kiseki Purple Heart NS. I have never calculated the resonance frequency of this cart and my sme V arm. How does one do that and how would it change by adding 3 gms to the head?

Hi Jim,
There exists an old Excel file that I had down loaded using a formula doing what you are looking for. 
Maybe one of the longer standing experts like e.g.@lewm knows about it and be able to direct you to the original sourse?
Mine has been modified to a more current version of Excel and a number of my own cartridges added to it in addition to the original content. 
Presently I'm not clued up how to create a link to mine in Agon, I'd know however to send it as an email attachment though.
As an alternative, let me know the Kiseki's weight plus mounting hardware, I'll then add the 3gram spacer enter it into my Excel file and can post back the calculated resonance frequency. 
Just as a work-around suggestion?
Michélle 

Sorry, I also would need the cu (compliance unit) of course, the arm mass for the SME V I'd use as 10.5 gram.
However, if you use the silicone damping tray function (some more or less) it can be argued that it would effect the arm mass slightly too. By this shifting the arm mass toward the quoted upper range of 10—11 gram e.g. 11 gram, this if the pin is screwed down to the second marking for example.
In other words pretty much fully immersed in the silicone. 
This is all very finicky and in final analysis it'd STILL depend on your listening impression what you prefer of course. 
In my experience, a low cartridge weight ~ 6 gram and high/soft compliance > 20 cu, asking for a light mass arm, I would use no damping at all, lifting the screw pin up past the first marking (tray filled to the correct level with the correct viscosity silicone gue). 
On the other hand, with a cu of about 15-16 (medium stiff) and a cartridge mass of ~9 grams I find a medium immersion somewhere between the two markings suitable, and as the cartridge mass goes up to e.g. 13 grams (still at 15-16 cu) the damping again can be reduced toward no damping, since the increased cartridge mass is adding more inertia (this is my rational). 
A low cu of 10 and less, with a low cartridge mass, e.g. a 103 Dennon with plastic body, would then again require a higher damping setting, assuming my rational makes any sense 😉
Yet, trust your ears! 
Michélle 

Ok, actually did find the Purple Heart specs on line:
Weight: 7 g (jolly light for its size methinks) 
Compliance : 16cu 
Arm mass used: 10.5 g
Therefore resonance frequency: 8,7793 Hz
This being well within 7 - 12 Hz range. 

As for the damping, I'd suggest pretty much in the middle between the two ring markings and more towards the bottom ring mark (lighter damping).
This when I compare it to my Ortofon Quintet Black, with Shibata stylus, 10.8 g mass incl. cart leads, brass mounting screws, and cu 15. Resulting in rf of 8.9 Hz. 
Michélle 

So, justmetoo, by your calculations what would adding the 3 additional grams for the spacer do to the resonance frequency, everything else being the same?