Yes, Sabaj changed the operating mode of the power supply immediately after receiving a report from me. And they sent me an improved new A20a to check the operation.@Moosi
In the new version, Sabaj did not deactivate the burst mode? Or are we not talking about the same thing ?!
I have never used this Oyaide product for audio equipment. I have used a product similar to the EMI failure of industrial instruments in a factory before.Instead of copper foil, please use something similar to Oyaide Electric *MWA-010T*.
There are online retailers that ship the tape internationally. They also have the same material in sheet form in varying thicknesses.
It is also extremely effective and helps to bring out a cleaner and possibly "purer" sound from your loudspeakers when applied in strips by the inputs of your speakers binding posts.
The tape is also coated with a dielectric so is non-conductive. Just before posting this, I did use a multimeter to check for continuity. I've used it in various amplifiers including several tube amplifiers to great effect. I will stress one thing which is that it can absorb sometimes too much extraneous noise and make things sound a bit flat. Of course this is a subjective impression. The material itself is a patented "Sendust"
Sendust - Wikipedia
en.wikipedia.org
The tape, and sheet is both non-conductive due to its coating which is possibly clear rubber?
Copper doesn't absorb EMI/RFI, it reflects it or scatters it. This material absorbs. The amount of magnetic flux around so many electronic components such as amplifier internals, power supplies, speaker binding posts and crossover parts is shockingly huge, most of them negative. I've been using it as a simple fix part for many years with great success.
Do a google search for the part, and find an online retailer, there are a few. If you're in Japan it is readily available. The stuff works. The wiki page will tell you what it's made of and why it works. There are other companies that are very small scale that sell similar sendust materials but I've not found one that sells it as a 0.1mm thick, 10mm wide tape.
@Toku, perhaps you have used this tape or material yourself?
Thank you for the advanced foil you were pointing too. I don't believe I'll find the motivation to open it up again for it's close enough to perfect to my ears now with the copper foil. But isn't the PC case made of aluminum and does "cage in" EMI from graphics cards to some extent for it reflects off the surface bouncing around inside the case instead of passing through?High powered graphics cards are especially bad about emissions.
No, I'm afraid that is a different thing. They've just changed the operation mode of the swichting relay from being load dependend to being time dependend. There is still a single click when you turn on the A20a with the updated Mornsun, isn't there? That single click means it's switching to burst mode which will stay active until you hear another click (with the new ones, probably never). With the Meanwell there is no click at all. The only way to find out which mode the new Mornsuns is running at would be to measure how much they actually pull in watts from the wall (with a device like that: Link ).Yes, Sabaj changed the operating mode of the power supply immediately after receiving a report from me. And they sent me an improved new A20a to check the operation.
Then it must get quite warm?Copper doesn't absorb EMI/RFI, it reflects it or scatters it. This material absorbs.
Then it must get quite warm?
Thanks for your order of the SABAJ A20a. If you have any problems please contact us. We will help you to solve it. Tips: Please connect the power adapter to the item and then connect the 220/100V power supply.
Thanks. Have a nice day Regards,
Sabaj
Glad to see you. This is a simple return visit. No other meaning. : )
Best Regards,
Hifi-Booster Shop
I am confused by the fact that I often receive such incomprehensible replies from China to my inquiries.This was the response to my inquiry as to why they contacted me with their nebulous message. Can anyone decrypt?
I am confused by the fact that I often receive such incomprehensible replies from China to my inquiries.
Is such a response a Chinese cultural thing?