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  1. Hi All, I thought I would post a story about my Rega TTPSU, the wall pack noise and the solution I am embarking on... So after a couple of weeks living with my RP6 at the start of the year, I noticed an audible 'buzz' coming from behind/within the side board I call a stereo cabinet. I did a big search on the web to see what could be causing my issue? The first item of help I located was a way to fix the buzz that a TTPSU causes through the speakers, due to no/poor earthing on the case thing.... Great, a little earthing cable test did reduce the noise floor through the speakers, but this fixed a problem I didnt know I had, and the other buzz continued. Boo! I did some further isolation testing etc.. and determined it is actually the wall wart or plug pack supplied with the TTPSU that was the culprit. Even when removed from the power conditioner and plugged directly into another power point, the buzz was there, it didn't even need to have a load to make it noisy. Oh well, looks like I needed a new wall pack from the local Rega supplier, $55 and a few days later problem solved.............. Nope! The Gotcha moment: plugged the new pack into the wall, had a listen, and boom (or more to the point, Buzzzzzzz) The noise was less, but still there, in a brand new Rega wall pack. It went back to Rega for a refund, and I continued to live with the buzzy cabinet (which of course the cabinet amplifies the buzz) A few months on and many nights researching the options, again and again.... I have determined there are very few replacement 24VAC plug packs available in the market, and none of them appear to be 'low noise' 'Audio friendly' options. Only a couple of places seem to make an audiophile power supply for the humble Rega TTPSU, so I had to work out which one would be the best value for money as I could only do this once. The options I found were all foreign production options, usually made to order and with no real way to test them or review their performance without pulling the purchase trigger. The most comfortable option I could find was a custom PSU from Graham Slee Products, though the price was outside of my resources at the time. Swagman Labs (eBay seller) produces an option, but then recommends the upgraded version for audiophiles, again the price was creeping up there and still no comfort as to the result...... what was the boy to do? the buzz it is loud enough to creep into the Sennheiser HD 650 listening sessions these days. Well the solution. Contact a local Audio Electronics specialist and get him to test the power supply and the TTPSU to see what could be done as a local manufacture, thats what! So I had a chat with William from The Factory Audio, here in Canberra, and after testing he has recommended an upgrade to the internals of the TTPSU and make some electrical modifications to allow a lower voltage, higher precision , lower noise plug pack to serve up the requisite AC to the turn table. He indicated the TTPSU had only just enough capacitance to do the job, it was taking about 32V from the plug pack and reducing it to closer to 20V for the turntable so was wasting heaps of life on heat etc.. So upgrading the TTPSU and using a better plug pack was a better option than producing a separate PSU with all the requisite conditioning and control, only to use the TTPSU to do the last little bit. The best part: The price was within my tolerance, and is produced by a Canberra local!............... So hopefully by the end of the week, I will be able to further report back as to the performance of the upgraded/adjusted TTPSU. I am hoping to be able to report back that the unicorns and fairies have now been released from the RP6 in equal measure and the air and space around instruments and singers is life changing............ but if not, that the Buzz has gone and I am listening to vinyl with reduced noise. Thanks for reading this long post, enjoy the rest of your night Dan
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