Technics 1210 internal regulation mods

Martin,

Good news. I do have the higher rated powersupply module!
TDR-21 here I come!

I built a DIY version of the SR5, so no LED :lol:

Now I need to get a higher voltage transformer... arghh... its always something.

Cheers,
Pete

Nice one!

Ask Paul for advice on the transformer as he told me there are many inferior toroids around.

Please see my further thoughts here, not wanting to double-post the same item. Take especial note of my new earthing arrangements, these are critical to get the best from the mods (and a happy find by dint of changing my armboard):

http://theartofsound.net/forum/showp...5&postcount=76

Martin,

1. Your describe your "earthing" setup as follows :-

"Earthing: rather than the original earthing arrangement where the deck was earthed via the arm's earth cable, the steel arm plate and into the deck at a different point from the PCB earth; the deck and arm are now split in two (insulated by the wood) and each is independently earthed back to the same earthing post on the phono preamp (the deck from that all-important lower-left PCB post), so true star earthing both inside and outside the turntable"

Is this the same earthing setup that is described in the second picture in your post http://theartofsound.net/forum/showp...5&postcount=89

2. Is this the recommended version of earthing the regulator mods from Paul or is this something that you have devised?

3. Have you implemented stage 3 of the regs yet and would the proposed superclock mod take into consideration and be designed around current regulator mods??

Andy

Hi Andy

It's an extension to that picture (I fixed your broken link): I deviated from Paul's wiring recommendation by adhering to strict star earthing as much as I can accommodate it. So the negative return from the external SR5-27, one of the grounds from the TDR-21 (wire with green sleeve), and now a new green wire going out to my phono preamp, all go to that single ground post where the PCB tracks also return to.

Further, my arm is not earthed to another part of the deck, its earth cable also goes to the phono preamp earth post.

As for stage 3 (three further tertiary regs), that comes next. I haven't even thought as far as accommodating the Superclock, if it can be done, but I would naturally use another PH module to supply that with clean power.

Thanks for the replies. I'll be buying the regs when they become available and when I've got my PSU from Paul. I'll have to get in contact with you if you dont mind with regards to helping me to earth my techie like you've done with yours. Toodle Pip :eek:

No problem, Andy. Shout when you're ready.

I've nearly finished my Garrard 301 restoration project which I started at Xmas so it might be sooner than you think. I just had a thought about adding an additional regulator for the potential superclock mod. What it be a good idea to do away with the pitch stabiliser altogether and use the space that it takes up to add more regulators?? I think I recollect seeing a simple mod where this can be achieved. I must admit I think the pitch stabiliser to be pretty pointless and if we intend to use a super accurate clock to stabilise everything why the hell do we need a pitch stabiliser polluting up the PCB???? :scratch::scratch:

Well indeed, although a revised clock circuit shouldn't take up much room. However, don't get too excited about a Superclock just yet until Audiocom come back with a yes/no. Failing that, maybe a small crystal oven with either the original or a superior crystal.

:popcorn: