Another “How to choose an arm” question


I currently have a Sota Saphire running an SAEC We317 arm (221mm spindle to pivot and 12 mm overhang).

That is running a Garrott Bros p77i, but I have been looking at some LOMC cartridges, as well as SoundSmith LO-MI, AT ART, etc.

How is one supposed to determine their current arm is good or not?

It sounds fine and I would think that the knife edge design is not prone to a lot of wear.
However it was recommend that I upgrade the arm… But how would I know “to what”, and how would I know if the upgrade is worthwhile?

I was looking at some DD tables to have a more expanded choice of arms that can be mounted, as the Sota is a bit restrictive in that regard. That is still on the cards as a possibility… however assuming that the Sota is a keeper, then how do I determine the arm’s adequacy, being “fit for purpose”?

128x128holmz

Yeah @pindac I probably made my last tome arm board in the ~85-88 timeframe.
I don’t know if I was advised to use aluminium, or just lucky, but it is likely a plate of 6061 or 7075.

My feeling is that it probably was an improvement over the MDF tonearm board.
But I am not overly sure.

I suspect that there were LOMC back then. However I was running an AQ606 or AQ404 cart.

There are a lot more cartridge options available now.

Dear @holmz  : No, it's not contrary what is happening is that you and me are at different step in the ladder way to enjoy MUSIC.

Your different threads/posts tells that with analog you are trying to go out of the " baby carry " when I'm already out of it years ago and now seated just enjoying MUSIC and posting in forums trying to help gentlemans that ask for. That's all. Nothing is contrary, you are in the fun learning ladder steps: good

Maybe you’re right, but I thought it was out of stroller/pram back in ~84 when I got the TT, arm and cart.
I did upgrade the preamp in ‘98, which had me go an old ARC phono stage, and recently a more advanced phono stage with more gain and loading options.

It’s ANZAC day in the antipodes, but I swung by the local aluminium place today.
The sign said closed, but the shed door was open. 😃
The fellow was working on his “hot rod”, and I got an off cut of 10mm thick alloy.

I can get that shaped to fit into the Sota, and the three screw holes that attach it to the table.
Then later I can mark out the 222mm spindle distance.

The F.S./Thrax info says use a 24-25mm diameter hole… so I’ll see if there is a 15/16 Forstner bit, or reamer.
I’ll  just go slow and bore the hole on a drill press allowing the bit to cool occasionally.

Maybe I need to start a thread on how to pick out a cartridge next 😋

@holmz The searching out a Base Plate for the new Tonearm, landed you in the Company of a individual working on their Hot Rod / Custom Vehicle.

I'm sure the observations and possibly the banter were a nice distraction from the HiFi Interest. If you ever need a High Quality Aesthetic Paint Coating applied to a item that is owned, I am sure the Hot Rod owner can direct you.

I had a very good experience with a Custom Paint Shop when I was to have a TT Chassis recoated, I got the full treatment of being shown all the processes and was shown numerous samples.

I was very impressed with a work being done whilst I was there and settled for this as a 5 Coating Finish with Lacquer Application as well.   

I'm sure the observations and possibly the banter were a nice distraction from the HiFi Interest. If you ever need a High Quality Aesthetic Paint Coating applied to a item that is owned, I am sure the Hot Rod owner can direct you.

Always good to have a chat with like minded people.
He indicated surprise that I knew what a Caterham was.