Seeking arm suggestions for a Grace F9R

@rodman99999

No, the majority of the Grace F-9 series are very high compliance cartridges, please look at the manuals first. The F-9F,F-9E, F-9U ... compliance is 25@100Hz and this is typical figure for Grace MM cartridges. Keep in mind that you have to multiply this figure on 1,5 at least to find out what is the compliance @10Hz

SoundSmith (as the US manufacturer) measuring compliance at 10Hz from the start, so this is correct. But all japanese manufacturers measure compliance at 100Hz and this is whay different from the reality, so it must be converted. However, 25@100Hz is already high, it reality it’s about 40@10Hz (very high compliance).

I don’t think the original F-9 Ruby is lower in compliance compared to all the Grace F-9. The only low compliance grace F-9 is F-9P (Professional), this figure is 10@100Hz (about 17@10Hz)

Robbie, Did you actually measure a resonant frequency of 7 Hz, or did you calculate it based on assumptions of compliance and effective mass?  If the latter, and especially if you're really not having an audible problem with bass reproduction, I would say forgeddaboudit.  This business of worrying about resonant frequency is one of the most over-rated in vinyl world. FWIW, I run my Grace Ruby re-tipped by SS in a Dynavector DV505 with original DV headshell.  Like Dave says, it's a great cartridge.

Glad I checked in, sooner than my usual once a week. Silly me, to have trusted the Grace compliance figures, on the Vinyl Engine site. I’ve no doubt, their own manuals, would be the authority. VE doesn’t mention at what frequency their figures are given, nor- was I thinking about Japanese spec(Oldtimers Disease). And, like I said, I couldn’t swear to anything, regarding Mr Ledermann’s options, methods, materials, or end compliances, with his Grace rebuilds(in my reply to Mr chakster), so- thanks for that info, Mr dgarretson. I guess, now I can(except for whether the compliance is higher or lower). Happy listening, everyone! https://www.vinylengine.com/cartridge_database.php?m=Grace&t=any&mod=&sort=2&Search=...=