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liquidsmoke

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  1. I was hoping to find someone in the audio community who is sitting on one of the field programmers, since Intona say all of theirs is out/lost in the field! They must be somewhere, probably just sitting on someones desk...
  2. Hi, I have an old version of the Intona Isolator and am experiencing some issues with it that may be fixed with the FW update. Mine is #175 looking at the SN. Is the field programmer floating around the community still; if so does anyone know where it is so I might be able to use it? Thanks!
  3. Hi, Thanks for this really informative post This point is very interesting. So are you saying that if you have say a flac file, which you have originally sourced from SACD DSD64 rip, and converted to 24/88.2; then converting this 24/88 flac file back to DSD at play time is not a good idea?
  4. It's a panasonic. From what I read it is part and parcel of the plasma technology. They use (sometimes multiple) switchmode psus to fire electrons around at high voltages. I don't think it's the TV going bad or anything. These plasmas PSUs are actually audible to the ear themselves when they are on! So scary to think what they dump onto the mains. My Yamaha AVR does cause the airlink to buzz a small amount when it's on, by barely noticable. None of my other kit causes buzz: arcam alpha 10 arcam alpha 10p popcorn hour a-400 arcam alpha CD musical fidelity dac + v-link linear psu for popcorn hour and v-link bluray player mac mini netgear switch
  5. Yeah it was uncanny how bad it sounded with everything going through the blocker! A slightly update to my previous is that I am still getting a bit of Buzz (with blocker just before TV), but it's not as bad as before. So I'm happy-ish
  6. Ok, so my dc blocker arrived today. Arpagon from diy audio built me the blocker to a high spec which could be placed anywhere in my system (in theory). 27,000mf caps were used I believe. It's very nicely made and in a nice metal box too! Anyway I've just been having a play and it does seem to have helped. However you have to be careful where it's placed. firstly I tried to place it between the wall socket and the airlink. All my equipment is Hanging off the airlink now including the plasma. Buzz still there! secondly I placed the dc blocker in between the airlink and all the equipment in the rack. Buzz gone! Great! TV picture seems good. Then I tried to listen to my Hifi for music. I listened to a couple of fav tracks... Bass sounded muddy and horribly. Very restrained and undynamic. Hmm...I thought maybe I was hearing things and perhaps I wasn't in the mood... lastly I tried putting the blocker just in front of the plasma... Buzz still gone. Good! Music...back to how it sounded before. So, I'm happy I guess. Seems like this plasma must be kicking out a lot of dc intermittently. I probably didn't need to overspec the blocker so much but at least I now could use it on anything pretty much down the line if needed.
  7. Speedskater: 'one and a half' user shares your opinion somewhat I think, as he suggests in his info about the di/dt power draw characteristics. In answer to your question; I have tested the plasma TV plugged in a variety of locations. Without the balanced supply, the plasma causes ground issues (humming) from speakers. If I remove the ground pin from the plasma all is OK. When using the balanced supply with everything plugged into it, the hum is gone. No hum even with ground connected on the plasma. However I am getting these annoying and quite loud at times, intermittent buzzing (notice the word buzzing; not really a hum. More intrusive and metallic sounding. So even more annoying than a hum) coming from the transformer in the balanced supply when the plasma is turned on. Aerial feed disconnect was the first thing I tried. There is also an inline galvanic isolator on the aerial cable now for good measure. I am planning on trying out a DC blocker. Its relatively cheap and should turn up in a week or 2. So I will report back my findings. Hopefully it is DC, but I fear that it isn't.
  8. I wasn't aware RFI would cause a buzz in a balanced power transformer?
  9. Thanks for your reply. Thats interesting info. I guess if I got hold of/borrowed a DC blocker to put between the airlink and the plasma, then it would rule out DC as the problem? Regarding the solutions you have offered: a) sounds like a fair idea. Would this isolation transformer go between the Wall and the airlink? Is there a reasonably priced off the shelf unit that would do for my application? Otherwise my problem is that without detailed idiot proof step by step guide to making one, I would be out of my depth. b) This isn't really practical as with this method I get horrible ground loop problems throughout my system due to the HDMI connection between my AVR and TV. This is actually one of the reasons which got my looking at balanced supplies in the first place. And thankfully the balanced supply has worked at curing this problem. I suppose I could remove the ground pin on the TV, but I would be wary of doing this for obvious reasons. c) I wouldn't know where to start! I'm sure I am completely stupid in thinking so, but couldn't I use some kind of capacitor arrangement between the airlink and the plasma to smooth out the current draw? As a kind of buffer? Or does this approach only work with DC?
  10. I'm wondering if anyone has used or built a DC blocker for use between the wall and the balanced PSU toroid? I received my airlink balanced supply and am really happy with the results. I have my whole hifi setup connected to it as well as a plasma TV. The only problem I have is that when the plasma TV is on, I get an intermittent loud buzzing noise coming from the airlink. Now I've heard that DC voltage on the mains feeding the airlink can cause issues like this, however if the plasma is connected to the balanced supply then would any DC voltage that the plasma drops into the mains cause this too? I'm thinking to try to put one of these inline from the airlink to the plasma: avahifi - AVA HumDinger Perhaps I need one between the mains wall socket and the airlink too? I would appreciate any informed opinion or help as my knowledge of power circuitry is very limited.
  11. My amps power consumption are 'rated' at a max of 800VA according to the manual, which I presume is because they each have 1 800VA rated toroidial transformer inside them. I'm having trouble deciding how much power I need the balanced transformer to supply. I have been reading around and it seems that a typical amp like mine will only draw a max of 200W electrical power at high volume. And the OP mentioned that he thought that a 2000VA balanced transformer would be more than enough for a mid-high end system with 2x 500w monoblocks. If so then that is a good sign for my wallet!
  12. Firstly thank you DiminishingReturnsOfficer and OneAndAHalf Great read and very good links to help an electrical noob understand how a balanced power supply works. After reading everything and reading everything again. I still have 1 question in my mind which is stopping me pulling the trigger on an AirLink 1500 or 2000va transformer to power my kit. Standard Balanced Power Supplies The question I have is would a balanced transformer prevent ground loops and interference if all equipment were connected to the transformer? Or would it prevent the ground loops and interference only if 1 of two devices that were involved in a ground loop were connected to the transformer, and the other device operated directly from the mains? I suppose what I’m wondering is can I connect all equipment (DAC, Mac Mini, USB interface, 2x Power Amps, AV Receiver, TV, Bluray player, media streamer) to the transformer and expect the system to operate without ground loops and mitigating the nasty switch mode psu noise? Or do I need to experiment with some devices connected and some not? I seem to see conflicting information. Some people are saying they split digital and analog devices over 2 different balanced supplies, and some like the equitech article seem to suggest to me that due to the nature of the balanced supplies, that anything connected to it will not interfere with one another...? The Origin of Balanced Power The answer to this question decides whether I can just buy 1 big balanced PSU (2000va) or if I need to buy 2 separate ones; and spend more money Thanks!
  13. I was wondering if anyone has ever suffered from a slight skip right at the beginning of each track with XBMC on OSX? I'm using latest XBMC with OSX 10.6.8 on a mac mini and it's a little bit annoying as it's the only 1 gripe I have with the software right now. Also I don't suppose you know of a way to get auto sample rate switching with XBMC? Currently I'm having to do it manually using the midi utility in OSX settings Thanks!
  14. Thanks for the heads up. Interesting that, but it seems expensive as I can pick up the M1 DAC and V-link 192 for £500. Seen as I don't need pre-amp ability or bluetooth etc. Plus I'm impatient. lol.
  15. Hi 'ensrettet'; I was wondering if you had the chance to try the V-link 192 between USB and M1DAC yet? I'm thinking about this combo.
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