AT-95ML on a Pro-Ject Debut Carbon

The AT 95ML is a high compliance cartridge (about 40cu at 10 Hz), so I don’t know why you want to add 6g to the effective mass. With such a compliance you could use a tonearm with 6g effective mass, total, which doesn’t really exist. In any case, don’t add any mass. One wonders what data you used to come up with your conclusions.

The effective mass of the arm is 6g, the cartridge is 6.1g.

Everything I've come across has basically said the VM95ML might be a bad match for the Debut Carbon, but since it's what I already have was wondering if there was some kind of stop gap measure to make it usable for the time being, until I decide to just get a different TT or a new cartridge.

I'm also wondering how overstated the mismatch is. I'm going from a Teac TN-400S (which hums and is a very entry level turntable anyways) so while the VM95ML might not be the 'best' for the TT, it should be noticeably better than my current setup.

I know you're not supposed to add weight to fix compliance issues, but I was wondering if there was some kind of short term cheat to improve things to maybe give me the nudge I need to fully commit to a good TT setup.

I strongly doubt your data for effective mass of the arm. There have only been a few tonearms in audio history, dating back to the hayday of high compliance cartridges, with such a low effective mass. But I’m guessing you got the number from some reliable source, so I’m puzzled. Perhaps that value doesn’t account for the headshell. I regularly weigh all of my many headshells, and none weigh less than 8-9g. Most weigh 10g or more. So, to begin with, effective mass includes headshell and mounting hardware(add a few grams for that). It also includes the weight of the cartridge (6.1g). Even if your particular tonearm really does have effective mass of 6g without cartridge and even if we discount the weight of hardware, you’re at ~12g minimum. And finally, a high compliance cartridge like yours needs a low effective mass. The two parameters are inversely related. You’re going in the wrong direction if you add mass. Also, in my opinion, this whole issue is way overrated. One reason I say that is you and I don’t really know the compliance of your particular sample. Nor do we know exactly the tonearm effective mass. The equation merely puts you in the right ballpark. And, with apologies, you have somehow made an error in your calculation, if it leads you to believe you need to add 6g of mass.

That's the data from Pro-Ject directly.  Effective arm mass: 6.0g

That's not including the weight of a cartridge or the mounting hardware (the Debut Carbon has no headshell, the cart mount directly to the arm). Everything said and done it'll probably be around 13-14g.

I think you've given me the answer I was looking for. I've been getting the feeling that this is a really nitpicky thing that I likely won't notice and even if it is noticeable it will likely be eclipsed by the gains from going to a quieter, overall better table anyways.

I think I should stop over thinking it and just throw the VM95ML and, barring absolutely terrible performance, just call it a day.

You have to multiply the compliance on a Japanese cartridge by 1.7 before you calculate. That 6 gram arm and that cartridge are a perfect 10.92 hz. BTW, adding a weight to the arm will change the resonant lower and you don’t want to do that!

http://mh-audio.nl/Calculators/RF.html