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skatbelt

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About skatbelt

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    Member type: Music first

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  1. I agree. To my knowledge, the only reason this became a topic here in the first place is because, over at another forum, Emile from Taiko Audio is reporting SQ improvements using these long distance types of SFP's for his SGM Extreme server. So a case of n=1 and in the context of a server that is.. well.. itself subject to all kinds of extreme measures...
  2. The shielding (for individual pairs and overal) is to prevent electromagnetic interference so the cable meets its specs in terms of speed, bandwidth and distances for computer networking.
  3. Analogue as in life like or analogue as is mid-fi carriers like vinyl or tape?
  4. I found the original post about JSSG here and it to turns out that I was partially wrong in the post above. The shield doesn't need to be connected to one side to be effective. You will need the extra path from the one end of the shield to the other.
  5. In my memory the JSSG360 principle is to connect the cable shield at one end to the metal housing of plug A while leaving the other end (the plug B side) not connected but - instead of this and via an extra lead/conductor - loop this end back to plug A. This to ground the shield and make it more effective / not capacitive while not acting as a transmitter between the two connected devices. I could be wrong though.
  6. I have good experiences with (cheap) Telegärtner cat 6 UTP and couldn't really distinguish between 5m and 10m. The general consensus is to stay away from metal shielded housings if these housings are connected to the shield of the cable on both ends. This creates a route for aforementioned noise and leakage currents.
  7. Yes, yes, but I am curious what his setup is now. The way I interpret it is him going from optical via switch to copper directly from eero pro router (from signature) made an improvement.
  8. Hi Lucie, I am in the Netherlands and on Ziggo too. My wifi-modem-router is a Cisco EPC 3928 with a 15V/2.0A SMPS. May be I should try replacing its SMPS with a LPS too and see what it brings to the table. A question though: did you try other Ethernet cables besides the Supra cat 7? I ask because the shielding (via the metal connector housings) could lead to noise distribution to the ER.
  9. Jud, what do you mean with the ER on its own? And how is your connection now from ISP point to ER?
  10. Well, ehh, a transformer: transmission of signals between coils via a magnetic flux. In these cases 1:1.
  11. My guess is that the Transparent protector, the Baaske and Emo isolators as well as the ‘black boxes’ in the Shunyata and Sotm cables are all transformers of some form and that putting them in series will attenuate the signal so much that the connection becomes out of spec. In general - with these passive elements - it is advised to keep them as close to the next downstream receiver as possible. I can confirm JS’s remark that an isolator on the B-side does more harm than good. @One and a half explained the technical side of this a few posts back. On the A-side however, my Emo isolator does positive things to the overal SQ but this could be because of my particular setup. My point is, following JS’s and @One and a half ‘s advice, one should not use a Shunyata or Sotm cable on the B-side if my assumption is true about their ‘black boxes’.
  12. I agree on the fact that the ER is upperclass compared to Baaske or Emo systems isolators BUT in my system the end result is the best while keeping the Emo systems isolator between my Roon server (a modded Mac mini) and the ER on the A-side. So either it is keeping the A-side or the server cleaner (or both?).
  13. Looks like the Alpha and Sigma have Emo / Baaske -like isolators build in to reject common mode noise. So no wonder.
  14. Try shunting the ER via its ground terminal screw to common ground with the JS-2. After this you don't want to go back to stock SMPS..
  15. Well I was naughty. Just for experimental purposes. And before you ask, yes, there was continuity. Outcome: shunting is a must when powering both the ER and something connected to the A-side - in my case a Mac mini - from a JS-2. At least when you have copper input from an ISP router or any other component in your home network to the A-side as well. What puzzles me is this: while shunting closed the gap a bit, I still only get stellar performance when I keep the Emo systems network isolator between the Mac mini and the ER. I was so hoping this would not be the case. That - if grounding was dealt with correctly - network related changes on the A-side would not affect what comes out on the B-side...
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