Hey,

After a few bits for a project if anyone knows of any

Sony PS-2250 strobe unit

PUA-114 tonearm - complete / not complete / broken etc

Cheers

Ant

Valve & Idler nut!

I've seen one of these TTs only once in the flesh.
They are pretty rare, although the above unit (sans tonearm?) was in Akld not that long ago.

DarkLantern blog - darklanternforowen.wordpress.com

I am unsure if it's the same unit, this one has the standard PUA-114 tonearm.
Is isn't in very good condition and was a silly impulse purchase, but after spending a solid day
fixing everything that was wrong it actually sounds amazing. I'm super impressed with it!

Valve & Idler nut!

A pretty solid DD(?) motor unit, as I recall.

DarkLantern blog - darklanternforowen.wordpress.com

Yes correct, it seems to be of reasonable quality.

Valve & Idler nut!

This sold in Auckland recently - on offer after the original bidder asked to have his bid withdrawn.
www.trademe.co.nz/Browse/Listing.aspx?id=2698168064&archive=1

The Q&A was interesting.


I haven't investigated any claims about lateral bias counterweight effects.
I'd imagine though, put there at expense, to balance the lateral offset mass of the curve shaped tone arm.
Level that biased offset affecting mass distribution on bearings, make neutral.

What could be wrong with that?

What were the "audiophiles" for whom it was a "thing" complaining about?

Wondering ...

I'd love to read "detailed arguments to this effect", but where?

In context from Q&A just before that:


<i>These were commonly removed by audiophiles as they were a “thing” for a short time but ultimately considered to introduce more negative artefacts into the audio chain than they cured. So the removal is a common mod.</i>

Forum posts from somewhere perhaps.

It might have been gone before the seller had it.

Just intrigued by the physics, claims, counterclaims... Or is it nonsense?

Outguessing a manufacturer like Sony with their R&D at the time, hmm.

I think maybe not.

But what do I know? ;=}))