Seeking arm suggestions for a Grace F9R


I recently bought an F9 body and a SoundSmith Ruby OCL stylus. I currently have it mounted on an Acos Lustre GST-801 with a 7gr headshell but still a bit heavy with the resonance is in the 7 hz range. I'm liking it's sound and contemplating changing arms. Any F9 owners willing to make suggestions of great matching arms for it. (no 12" please)
Thanks,
Robbie
128x128robbiesd
According to the Vinyl Engine Resonance Evaluator, the 7G effective mass, of a Magnepan Untrac I, combined with your cart’s compliance/weight, will yield a 10Hz resonance. I’ve used both Denon 103D’s(same compliance as your Grace/1.5G more weight) and a Dynavector 17D3(just a tad lighter/slightly higher compliance), with excellent results. I own two of the Maggie arms(one since 1980). They are hard to find sometimes, but- well worth the search. They’re easy to set up and have all the pertinent adjustments. You may want to check with Mr Ledermann, as to whether your F9R still has the stock compliance. (https://www.vinylengine.com/cartridge_resonance_evaluator.php) (https://www.vinylengine.com/tonearm_database.php?make=Magnepan&mdl=&sort=2&eflo=&efh...=)

I don’t think you can rely on the original Grace spec for compliance of the Soundsmith OCL Ruby suspension. Best to ask Peter Lederman. Its highish 1.8gm tracking force suggests a lower compliance than a stock Ruby.

I have an F9 body with the Soundsmith OCL stylus assembly. It’s up there with the best of the vintage MM/MI. It has worked well with a lightweight Trans-Fi Terminator, a Micro Seiki 808X(or the more generally available 505) and a SME 3012R(with one-half of it’s split counterweight removed to lighten mass). I haven’t yet tried it with a light pivot arm-- maybe one of these days my Signet XK-50 or EPA-100.