Technics 1210 internal regulation mods

[Paul Hynes]

Hi cablemaker1,

Mike N has already answered your questions so I will just add that the connector seen on the power input flange is not an XLR connector (not enough space). It is a precision DIN connector and was installed for the convenience of changing external power supplies, to appraise their performance, without having to make connections internally every time the power supply is changed. I will be removing it in the near future when I get down to the bearing and platter upgrades.

If you decide you want to fit a similar connector follow Mike’s warning advice about machining the power inlet flange. I have a large and very heavy engineer’s vice on a bench drill press for work like this. If you try to do this without a firm anchor you risk damage to the flange and possible damage to yourself if your fingers are in the way when the flange turns into a propeller blade when it snags on the drill flutes. Please do not hold me responsible if you lose a finger or two through inadequate precautions.

Regards,
Paul

[Sonority]

As has been intimated, drilling larger holes in thin material can be, ahem, a frought affair. if the hole is much over 10mm I doubt many will get them circular, more likely a tri-lobular afffair.
There is a much better and safer thing to use than a blacksmiths drill :-)

A stepped (or smooth) cone cutter will give you a perfectly round hole with good sides.

Just drill a small pilot hole and set to work. I would personally have the material in a vice on a pillar drill, but that's mainly because I have one to use :-)



Good luck!

[MartinT]

I have cone cutters and didn't think of them at the time

[CableMaker1]

My turntable is on line with the sub regulators. At first, the tt was not getting up to speed - the platter was dragging. I was able to resolvethis issue by checking the wires and making sure that they were not in contact the platter. Working like a charm now.

The cone utter Ida good idea as I would like to have an XLR connector underneath the platter. That is a project for another time. I am buried in other personal projects at this time.

[Wakefield Turntables]

My regs are finally coming!!! I intend to perform all sorts of butchery to the 1210 over the next several weeks.

[CableMaker1]

Make certian to take your time and not be in any rush to hurry the project. It will be worthwhile. Make certian you have very thin wires - perhaps 23 AWG - to penetrate the holes on the regulator side.

[Wakefield Turntables]

Make certian to take your time and not be in any rush to hurry the project. It will be worthwhile. Make certian you have very thin wires - perhaps 23 AWG - to penetrate the holes on the regulator side.

I have high purity teflon coated silver for the job.

[CableMaker1]

I have high purity teflon coated silver for the job.

Do you find that the high purity silver or copper to make an audible difference over standard copper and silver when it is used in power related areas?

CableMaker1 claims that it makes a huge difference in his audio cables.

[Wakefield Turntables]

Not to stray too far off topic, but, I use very high quality silver because I can afford it and yes I do think it makes a difference. I use it for both electrical and sonic reasons, mainly because of the improved conductivity. BUT! I'm putting together a system with very pure copper so I'll have the best of both worlds

[Reid Malenfant]

<snip> Not to stray too far off topic, but, I use very high quality silver because I can afford it and yes I do think it makes a difference. I use it for both electrical and sonic reasons, mainly because of the improved conductivity.

You'll only get increased conductivity if you happen to use the same cross sectional area of silver cable & copper.

If you increase the CSA of the copper cable over the silver by say 10% then the copper will win