DIY power supply for Technics SL1200/1210

Hi Mr Frog

There are fundamental differences between the SP-10 and SL-1200, in fact there is actually no similarity at all. However with a new platter, a modified main bearing and new control electronics they could get close.

Putting the SL-1200 into a new plinth is a splendid DIY project, well done! Is this the first time?

I would suggest that you fully screen all the wires from the motor, I assume you are remote mounting the electronics too? There is a lot of hash that your cartridge could pick up from unshielded wires.

In my other life in Weather Satellites www.time-step.com I encourage DIY's and help them. They in return often provide the inspiration of wood and trees. You can see on www.SL-1200-MK2.com that I explain in great detail how I do things, this can make it easy for a DIY'er to copy, and I'm not against that.

In a few months I will release the motor dynamic mod for all to have for free.

But it must be remembered that some people struggle to solder a single joint, and that I need to pay my mortgage just like everyone else. And that works well!

Keep up the good work!

Regards

Dave

Very nice, frogspit. Put me down for one too - ;) I look forward to seeing how it turns out.
The cueing light certainly works after a fashion, but I've never had much use for it myself. I agree with muffinman that it's very unlikely that it could affect the sound.

John

Dave,

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There are fundamental differences between the SP-10 and SL-1200, in fact there is actually no similarity at all. However with a new platter, a modified main bearing and new control electronics they could get close.

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I suspect that the SL-1200 shares more genes with the SP-10 than you may think. I'd be very surprised if when National Panasonic launched the first SL-1200 in its full 'audiophile guise' that the SP-10 wasn't in their thoughts when implementing the design.

Anyway, a fully-modifed SL-1210 (like mine, for example) certainly gets very, very close, sonically - no "could" about it! :)

You yourself said that the 1200/1210 got 95% of the way there... Based on what I've heard, I'm not sure that last 5% is terribly significant ;)

Marco.

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Originally Posted by Dave Cawley

I encourage DIY's and help them.
In a few months I will release the motor dynamic mod for all to have for free.

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What a gentleman you are Dave :youtheman: May you pay your mortgage and much more! I will certainly be buying stuff from you in the not too distant future.

John

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Originally Posted by Dave Cawley

In a few months I will release the motor dynamic mod for all to have for free.

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Jolly decent of you Dave :clap:

Thanks for the encouragement everyone-this seems like a great site. I'll be looking for more advice vis-a-vis the electronic stuff at some point-right now, I just want to finish the deck, and have the platter spin at the correct speed. There'll be plenty of time for me to fry resistors down the road.:)

Not my first project-below is my 'reference' VPI (I made everything you see that's wood), a Papst-motored, three-arm belt drive deck, a Rek-O-Cut idler that, so far, I've stripped and polished, and will drop into a high-mass plinth, and a G301 that will receive a plinth made from a material that should be interesting-or, perhaps, "interesting".

Dave, I appreciate the sometimes disparate realities of helping the diyers, and trying to make a living!. So, any help you give is not expected, but much appreciated. Frank Schroeder of the famous Schroeder tonearms likewise provides help to diy-ers attempting to copy his arms-another great guy. I'm not sure what that 'motor dynamic mod' is all about, but I'm looking forward to it.

Oh, and I'm under no illusion that the SL-12XX series are anywhere near the SP-10s in any way other then the published specs (and even there, the 10 MKIII is in a class by itself). I just wanted to try a DD deck, and have a little fun at the same time. So far-mission accomplished. At least the 'fun' part.

I'm amazed that you would provide that information to be honest, and very pleased so a big thankyou to dave cawley!!

Fraser -

My offer of help was made to you personally via a PM, so I would prefer you to use that method if you want to communicate further about this, thanks.

John

Whoops sorry mate, taken to PM..

So nobody else tried a diy PSU yet?
I'm going to treat myself to one of these SL-1210's at some point, theres way too much fiddling for a diy bodger like me to resist:lol:
If a linear regulated psu is good enough you can try out a few variations, their p**s cheap and easy to knock up