Popular Post RamDawg Posted June 15, 2018 Popular Post Share Posted June 15, 2018 12 minutes ago, Audiophile Neuroscience said: Funny, I didn't even make my stance known, merely pointed out there are different perspectives possible. Edit- Oh, I get it now, I just browsed up through the thread, everybody is a troll for you if they disagree with you, even if you misconstrue what they are saying. Experiment with the various inexpensive DC ethernet cables first then your perspective will be legitimate. That's all. Trolls are ones who've not yet done so, put their 2 cents in and make assumptions based on no experience. mtruong34, AnotherSpin and SuperRoo 3 Link to comment
Audiophile Neuroscience Posted June 15, 2018 Share Posted June 15, 2018 10 minutes ago, RamDawg said: Experiment with the various inexpensive DC ethernet cables first then your perspective will be legitimate. That's all. Trolls are ones who've not yet done so, put their 2 cents in and make assumptions based on no experience. You are quite clueless. Sound Minds Mind Sound Link to comment
lmitche Posted June 15, 2018 Share Posted June 15, 2018 Are we having fun now? Pareto Audio aka nuckleheadaudio Link to comment
Audiophile Neuroscience Posted June 15, 2018 Share Posted June 15, 2018 2 minutes ago, lmitche said: Are we having fun now? Lol Sound Minds Mind Sound Link to comment
Superdad Posted June 15, 2018 Share Posted June 15, 2018 51 minutes ago, RamDawg said: This troll has perched in our thread and aims to continue to make this his dumping ground. He has had at least 1 offer to receive for free a DIY ethernet DC cable to try between his LPS 1.2 and ISO Regen (AC confirmed recent purchase). Jonathan (@jabbr) is definitely not a troll. He is a talented engineer who has shared a great deal here at CA and elsewhere. He is skeptical but never closed minded. Audiophile Neuroscience 1 UpTone Audio LLC Link to comment
Superdad Posted June 15, 2018 Share Posted June 15, 2018 12 hours ago, Speedskater said: Nope, you are writing about a product that has a poorly designed power supply. What product are you referring to? Surely not the ISO REGEN with its 5(!) LT3042 ultra-low noise/ultra-wideband regulators with properly done capacitor networks and layout. One aspect we are considering is that while the LT3042s perform better than any other integrated reg on the planet--and are likely not reacting to digital activity current draw spikes--the TI TPS7A4700 we use to regulate a clean 5VBUS output from the ISO REGEN (for DACs that need it) is not quite as immune to such. We suspect that users whose DACs draw VBUS from the ISO REGEN are more likely to hear differences with lower-inductance DC cables. Then again, I won't be surprised if a few people pop up and say they are either not using the 5VBUS from the ISO REGEN or are using some other VBUS injection after it--and still hear some cable difference. Remember, what people are playing with with DIY DC cables is not just our UltraCap supplies and ISO REGENs, they are experiencing this with other power supplies and other devices. --Alex C. UpTone Audio LLC Link to comment
Popular Post lmitche Posted June 15, 2018 Popular Post Share Posted June 15, 2018 11 minutes ago, Superdad said: Jonathan (@jabbr) is definitely not a troll. He is a talented engineer who has shared a great deal here at CA and elsewhere. He is skeptical but never closed minded. If that's true, why the troll like behavior? Summit and look&listen 2 Pareto Audio aka nuckleheadaudio Link to comment
Ralf11 Posted June 15, 2018 Share Posted June 15, 2018 29 minutes ago, Superdad said: Jonathan (@jabbr) is definitely not a troll. He is a talented engineer who has shared a great deal here at CA and elsewhere. He is skeptical but never closed minded. engineer?? He is however one of the best informed people on here and quite helpful. Link to comment
Superdad Posted June 15, 2018 Share Posted June 15, 2018 4 hours ago, Ralf11 said: engineer?? Yes as far as I am aware. Don’t recall what he does professionally these days, but he does have a fair bit of engineering knowledge and experience (and that’s likely a severe understatement). You can certainly ask him ( @jabbr). UpTone Audio LLC Link to comment
Popular Post paulkouhan Posted June 15, 2018 Popular Post Share Posted June 15, 2018 I just get the iso regen yesterday. Definitely some big improvements in my system ! Thanks Alex for this great piece of gear. I powered it first with the supra cat 8 cable at 5v with a lt3045 board. It is followed by a singxer F1 a nano digi and some fx d802 full digital tweaked (2 x lt3045 on board !) amplifiers. Is that a correct way to power it ? Amyway it works fine ! Later in the day I made one supra Dac cable as described before. The sound is awsome ! I cannot say yet if the change of the dc cable is part of that. I will have to make some serious listenings. Cornan and AnotherSpin 1 1 Link to comment
marce Posted June 15, 2018 Share Posted June 15, 2018 10 hours ago, RamDawg said: Troll Pathetic... \Just resorting to name calling instead of taking part in an open debate... sarvsa 1 Link to comment
mansr Posted June 15, 2018 Share Posted June 15, 2018 1 minute ago, marce said: Pathetic... \Just resorting to name calling instead of taking part in an open debate... Some people react badly when their faith is challenged. sarvsa 1 Link to comment
marce Posted June 15, 2018 Share Posted June 15, 2018 Its getting like that on just about every thread, you have a differing view or question how something could happen and your jumped on as a troll as a recent thread has highlighted... It a sad reflection on the hobby when we can't have differing views... Quote Experiment with the various inexpensive DC ethernet cables first then your perspective will be legitimate. That's all. Trolls are ones who've not yet done so, put their 2 cents in and make assumptions based on no experience. Then you get comments like the one above, just makes me laugh, my experience of DC cables etc. makes me far more qualified than the poster to comment on such things, yet my views will be slagged of as a troll because they are at odds with all those that believe in magic dc cables. Link to comment
Popular Post asdf1000 Posted June 15, 2018 Popular Post Share Posted June 15, 2018 18 minutes ago, marce said: just makes me laugh, my experience of DC cables etc. makes me far more qualified than the poster to comment on such things Respectfully, it would be great to see less of this and see more technical 'meat' to the discussion... Would be great if you can you check out the 1st post in this link (again) and share your technical counter arguments/thoughts? https://www.computeraudiophile.com/forums/topic/31554-diy-dc-power-cables/ Keeping it technical and respectful of course. sligolad and AnotherSpin 2 Link to comment
jabbr Posted June 15, 2018 Share Posted June 15, 2018 5 hours ago, Em2016 said: Respectfully, it would be great to see less of this and see more technical 'meat' to the discussion... Would be great if you can you check out the 1st post in this link (again) and share your technical counter arguments/thoughts? https://www.computeraudiophile.com/forums/topic/31554-diy-dc-power-cables/ Keeping it technical and respectful of course. I’ll again speak for myself here. I have, as well as many folks I assume, played around with DIY cables. These include interconnects, AC and DC power as well as internal wiring, connectors etc etc etc. Regarding DC cables, I don’t like those 2.1/2.5 mm plugs at all desire thatvbeing some type of standard. I greatly prefer a plug like one of the various round multipronged with a screw outer shield. There are many at Mouser and Digi-Key and if you are building your own cables and supplies powering your own devices that’s what you can use. I responded to first post and have yet to hear a technical response, save for @Superdad just recently, rather have been accused of being a troll because either I just don’t agree with someone, or otherwise haven’t tested each of 10,000 iterations of cables — trust me I’ve built many DC power cables. So yeah let’s keep it technical & respectful. Anyone who thinks I’m a troll care to make a technical argument? Custom room treatments for headphone users. Link to comment
jabbr Posted June 15, 2018 Share Posted June 15, 2018 15 hours ago, Superdad said: and are likely not reacting to digital activity current draw spikes--the TI TPS7A4700 we use to regulate a clean 5VBUS output from the ISO REGEN (for DACs that need it) is not quite as immune to such. We suspect that users whose DACs draw VBUS from the ISO REGEN are more likely to hear differences with lower-inductance DC cables. Ok fair enough. My question would be that *if* this effect is related to spikey current draw from the downstream USB powered DAC *then* the inductance of the DC power cable supplying the Regen would have to have an effect of the inductance of the DC power the DAC is seeing even through the USB cable!!! Does it? I’m going to guess not but willing to be shown otherwise. (see that’s a technical argument folks) Custom room treatments for headphone users. Link to comment
jabbr Posted June 15, 2018 Share Posted June 15, 2018 20 hours ago, rah50 said: Just noticed Ghent has added new wire to their portfolio of DC cables: 4S6G Canare 4S6G (OFC 4x20awg) 4S8 Canare 4S8 (4 x 16awg) DC-J01 Silver-Plated DC(JSSG) AudioQuest NRG-1.5 DC(JSSG) No Cat7 or Cat8 yet Just received my Supra and uGreen, but haven't tested yet. I’m seeing $220 DC cables which ... err ... are approaching the cost of the ISO Regen, LPS1.2 and iFi Micro Black label etc ... making my point. Again, if folks want to DIY cables and power supplies, then terrific (really) but ... Custom room treatments for headphone users. Link to comment
jabbr Posted June 15, 2018 Share Posted June 15, 2018 15 hours ago, Ralf11 said: engineer?? Ha ha no degree in engineering but like most scientists back in the day, we had to build our own stuff, and many many scientific discoveries were brought about by the creation and use of specific techniques which include sensors, amplifiers, electronics & software. My doctoral thesis was in molecular neurobiology which I managed to do without touching a test tube because of my skillz with hardware & software ? Not doing as much science these days but I do consulting and design in what could be considered engineering related fields. I also learned how to read journals and books along the way and maintain memberships in IEEE and AES. All’y’all can do that too ? Custom room treatments for headphone users. Link to comment
sandyk Posted June 15, 2018 Share Posted June 15, 2018 4 hours ago, jabbr said: Regarding DC cables, I don’t like those 2.1/2.5 mm plugs at all desire thatvbeing some type of standard. I greatly prefer a plug like one of the various round multipronged with a screw outer shield. I find the 2.1/2.5mm plugs and sockets unreliable for repeated insertions. Wherever possible I now use 3 pin Mini XLR instead. They lock in, and the best part for me is that I can separately obtain 2 of each type for Au $4 on ebay. (Au.$8) This includes postage ! jabbr 1 How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
Ralf11 Posted June 15, 2018 Share Posted June 15, 2018 3 hours ago, jabbr said: ... like most scientists back in the day, we had to build our own stuff, and many many scientific discoveries were brought about by the creation and use of specific techniques which include sensors, amplifiers, electronics & software. ...? Good Lord! I thought only scientists in the low-funded areas (like mine) had to build their own equipment! But, yes, modern science is often advanced by new techniques or new equipment, that is not commercially available. Link to comment
Ralf11 Posted June 15, 2018 Share Posted June 15, 2018 9 hours ago, marce said: Its getting like that on just about every thread, you have a differing view or question how something could happen and your jumped on as a troll as a recent thread has highlighted... It a sad reflection on the hobby when we can't have differing views... Then you get comments like the one above, just makes me laugh, my experience of DC cables etc. makes me far more qualified than the poster to comment on such things, yet my views will be slagged of as a troll because they are at odds with all those that believe in magic dc cables. 2 points someone new to this bbs would not know anything about you and someone without any technical education (whether in science or its 'service discipline' engineering?) would not know what is magic and what is real - <insert Isaac Asimov quote here> nonetheless, even those who were educated or inculcated in a liberal art, and shielded form all scientific knowledge in college should ask, and not be so dogmatic Link to comment
mansr Posted June 15, 2018 Share Posted June 15, 2018 20 minutes ago, Ralf11 said: would not know what is magic and what is real - <insert Isaac Asimov quote here> Make that Arthur C. Clarke. Link to comment
phosphorein Posted June 15, 2018 Share Posted June 15, 2018 1 hour ago, Ralf11 said: Good Lord! I thought only scientists in the low-funded areas (like mine) had to build their own equipment! But, yes, modern science is often advanced by new techniques or new equipment, that is not commercially available. If you are working in an area in which the instrumentation doesn't exist, the only recourse is build your own. Been there, done that! jabbr 1 Link to comment
fas42 Posted June 15, 2018 Share Posted June 15, 2018 12 hours ago, marce said: Then you get comments like the one above, just makes me laugh, my experience of DC cables etc. makes me far more qualified than the poster to comment on such things, yet my views will be slagged of as a troll because they are at odds with all those that believe in magic dc cables. How it works in the audio game is that at a certain point of "transparency", then doing the craziest things makes a difference in the perceived sound - I've been there numerous times ... What's happening is that the SQ is an unstable equilibrium, meaning that the slightest perturbation tips the apparent quality in another direction - playing with a rig in this state is like adding rubber bands everywhere, to hold it together. The only way out of the "madness" is to address the underlying issues, sort them properly - and then all the peripheral silliness disappears ... Link to comment
jabbr Posted June 16, 2018 Share Posted June 16, 2018 2 hours ago, mansr said: Make that Arthur C. Clarke. Asimov did say: Quote Self-education is, I firmly believe, the only kind of education there is. and Quote People think of education as something they can finish Custom room treatments for headphone users. Link to comment
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