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fixing hum on Rega Rp6

Hi all-
LIke some other Rega owners, I experience a moderate hum that seems to have something to do with lack of grounding from the power supply.  I went ahead and ordered an upgraded power supply from Swagman Labs, which should take care of the hum and have other sonic benefits.
http://www.swagmanlab.com/Product_PSU?product_id=664

It will be a few weeks before that arrives.  In the immediate, I found this fix for running a ground wire from the existing Rega PSU TT.
http://www.audioappraisal.com/tip-ground-your-rega-ttpsu-to-reduce-hum/
I haven't done this yet, but my dad (an engineer!) is very excited to try this experiment over Christmas.  So my question is once I have the Swagman unit do I need to unhook this grounding wire, or is it likely to add value even with the Swagman?
Finally, will an upgraded power cord with the Swagman also be a worthwhile investment?
Thanks and happy holidays!
Margot
mcanaday
mcanaday OP
169 posts
 
Yes.  I think the hum is from the wall wort for the Rega PSU...
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roberjerman
4,319 posts
 
Run a wire from the turntable ground to the preamp ground to eliminate hum!        ALL phono systems require THIS! Do this first before wasting money on another plug-in power supply! I am sure that what Rega provides is fine - they have been in business for decades!            Also, don't waste money on power cords! Contrary to marketing hype they offer ZERO benefit! Wire is the BIGGEST  B.S. factor in Audio!
roberjerman
4,319 posts
 
Hum is caused by a voltage-potential difference between two components. Connecting them together by a piece of wire fixes this and eliminates hum.
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