Sony PS-2250 DIY

[hatehifi]

Lovely! 

Cheers!

[Quinn]

Great to hear that the Sony PS-2250 is a contender for great sound.  I have a modded Lenco L75 and a JN Mark III.  I didn't know about his comments regarding the Sony DD.  Has anyone else completed their projects here?  Anyone directly compared a bone stock 2250 to their plinth modded version (but same tonearm/cart)?  Or compared it to a rebuilt Lenco L75 (better yet a JN version)?

[hatehifi]

I’ve modded 3 PS 2250/2500 over the years and the sound from the stock wooden plinth is imho far less dynamic and informative, congruent, compared to a simple slab of hardwood or, my preference, 2x 48-ply plywood sandwich plinth. Oh, replacing the original rubber mat with its cutout with a cork one and a Spotmat on top, 3x Gryphon Black Spikes feet (metacrylic cones), soups the sound up quite a bit. As I use a Panzerholz base, I believe that a massive turntable stand helps as well.

I presently own a highly modified and well thought out L75, not as ‘much’ as JN’s (as far as I’ve seen), but,  ‘more’ than a layered plywood construction. I really like the sound of this Lenco but, I think that even now the sonic footprint of the Sony is, was as much if not even more authentic. I am looking to install an even better bearing and in my Lenco and maybe this will change my opinion.


Cheers!

[Quinn]

Thanks for the info.  My first Lenco was built up using a big butcher block (close to a JN size), then a few tweaks, new 9" tonearm and cart.  I've always enjoyed this TT and it's as much in play as my Mark III.  I was curious about the Sony as I was toying with getting a DD TT, specifically the Technics SP-10, but the prices for used ones is ridiculous.   

I wasn't so much wanting to build it up with a big plinth or change it out, just a DD that sounds great as is...but always with an eye that should I want to build it up, it has potential for more.

[hatehifi]

It has been awhile since looking under the hood but if you like and have good tools at hand, I’ve always wondered how layered plywood would sound if fit inside the original plinth. I’m sure that this would sound far better than the hollow original. Once the woodwork is finally fit to shape (some ventilation is required for the motor), I’d epoxy bind the old with the new (and recess for the metacrylic feet). Just a thought.

Cheers!

[Quinn]

Excellent idea.  I had thought if I didn't want to fully commit to a plinth build to just drop the entire stock TT into a larger plinth and see how that goes.  Anyway, I'd love to see more current pix of the builds (yours and anyone else's).

[hatehifi]

Cheers!

[Kno]

It has been awhile since looking under the hood but if you like and have good tools at hand, I’ve always wondered how layered plywood would sound if fit inside the original plinth. I’m sure that this would sound far better than the hollow original. Once the woodwork is finally fit to shape (some ventilation is required for the motor), I’d epoxy bind the old with the new (and recess for the metacrylic feet). Just a thought.

Cheers!

I did what John said on one of those old Swiss TT

https://www.lencoheaven.net/forum/index.php?topic=30695.90

[Quinn]

Nice work.  Kno, very nice work on your Lenco project as well, and I dig that tonearm...

[Quinn]

It has been awhile since looking under the hood but if you like and have good tools at hand, I’ve always wondered how layered plywood would sound if fit inside the original plinth. I’m sure that this would sound far better than the hollow original. Once the woodwork is finally fit to shape (some ventilation is required for the motor), I’d epoxy bind the old with the new (and recess for the metacrylic feet). Just a thought.

Cheers!

Further to your idea; I wonder if anyone's dropped a stock Lenco and a stock DD (Sony?) into just a new plinth, to hear if there's a change.  Sounds like you prefer the Sony at this point.

Another idea I tossed around was dropping a stock TT (plinth and all) into a massive wood or MDF plinth (say around 100lbs), and make no mods to the existing TT.  I wonder if that would improve the sound.

[hatehifi]

There are many members here with fundamental understanding of physics and I’m not one. I think the DD unit on the PS2250 has an excellent mass versus inertia corelation in connection with its rigidity. There are so many factors which I assume influence the external forces upon the stylus/groove interface -which iirc should be zero plus vtf- that the many different “pollutants” are overwhelming for my further comments, or something like that.

I don’t think that putting a poorly conceived plinth into a seismic sink, e.g., is worth the effort.

Cheers!

[Quinn]

I agree, and most people would not put the time into building a large plinth only to keep the stock TT as is.  I was just wondering if anyone has tried it.  Maybe someone that needs to keep the TT stock. 

I've got my eye on a 2250, and I may know soon if I'll be taking it on.  I've learned there are 2 tone arms:  PUA-114 and PUA-1500S.  Anyone know if there's a marked difference in sound quality between the two?

[flavio81]

I agree, and most people would not put the time into building a large plinth only to keep the stock TT as is.  I was just wondering if anyone has tried it.  Maybe someone that needs to keep the TT stock. 

I've got my eye on a 2250, and I may know soon if I'll be taking it on.  I've learned there are 2 tone arms:  PUA-114 and PUA-1500S.  Anyone know if there's a marked difference in sound quality between the two?

The PUA-1500S was the deluxe tonearm and pretty expensive, about half the price of a PS-2250 sans tonearm. On a german test it got top marks (no pun intended).

The PUA-114 is clearly a more economically-built tonearm.

[stra57]

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[stra57]

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