Steve Eddy said:
I just diy'd one of those for my desk system. I totally wet myself. It's a good thing that my chair is stuffed with dri-rite!
PMA - I hope he wanted to buy a preamp from you!
I looked at your list of eq. used in your listening sessions. If I am not mistaken, all of the CD-players use many OPamps and no discrete circuitry. Maybe the Marantz 7001 uses the 2SC2240/SA970-based HDMI-modules. Not sure about the 7001, though.
The 627-based apparatus would be from Cabasse?
Sigurd
I looked at your list of eq. used in your listening sessions. If I am not mistaken, all of the CD-players use many OPamps and no discrete circuitry. Maybe the Marantz 7001 uses the 2SC2240/SA970-based HDMI-modules. Not sure about the 7001, though.
The 627-based apparatus would be from Cabasse?
Sigurd
PMA said:
Everyone, there appears to be a concerted effort by Jam, SE, and several moderators to derail the 'Blowtorch' thread and put it to bed. I have maintained discussion on this thread, somewhat beyond just what the 'Blowtorch' preamp was composed of to elaborate on related design issues when possible. As I have no permanent place on this website or any other, I have tried to maintain this one thread as the place to give info and answer questions. We have been VERY successful in keeping viewer interest over the years, but apparently I am somehow violating the 'spirit' of the website, by not having a dedicated thread of my own (that has never been offered to me) to do this. If this keeps up, I suspect that the thread moderators will stop the thread entirely, and leave me to 'swing in the wind' so to speak. Any suggestions?
john curl said:
I have not said anything to anyone along those lines.
You don't need to have anything offered to you, John.
Like everyone else here, you're perfectly free to start your own thread and set the subject to whatever you want.
se
shallbehealed said:
Hehehe. Even better that you didn't have the much higher quality, professionally-made, commercial version! They'd have to call in the HazMat team. 😀
se
Andre Visser said:
How 'bout we do EMail first and see if it's something to pursue further?
se
john curl said:
Frankly speaking, it is really very difficult to keep any sensible on-topic discussion here. The guys who do nothing than spoil here have thousands threads where they can do so. I do not really have time to lead useless quarrels with them, though I contribute only here and in one or two threads that I have started. If this is not stopped, I have to apologize myself from discussion here. I have spent much time and efforts in simulations of input stages to demonstrate people how it works. It seems to be useless, lost time. I am disgusted.
Shallbehealed, you are one of the reasons that I continue here.
Holm was a genius, and I once had his book. Lost in a firestorm, I'm afraid, and I could not afford to replace it as of yet. For him, gold was everything for relay contacts, and I tend to agree.
I did the 'Google' search on electromigration and got very good results, but no direct video. I might not know how to make that work, even if I did find it. However, my reference of EM of interfaces, does NOT need current to make things move. That makes it extra interesting. I will give you the full reference if you wish.
Holm was a genius, and I once had his book. Lost in a firestorm, I'm afraid, and I could not afford to replace it as of yet. For him, gold was everything for relay contacts, and I tend to agree.
I did the 'Google' search on electromigration and got very good results, but no direct video. I might not know how to make that work, even if I did find it. However, my reference of EM of interfaces, does NOT need current to make things move. That makes it extra interesting. I will give you the full reference if you wish.
John, PMA and a few other with positive inputs, it is appreciated and those who are interested have learned a lot from you, unfortunately we will always have to battle with some who think they know everything.
Thanks
André
Thanks
André
Andre, I just read a great article on human nature in this month's 'Playboy' July 2008 by Dr. Drew Pinsky. It goes: "...Jealousy, which is 'I want what you have.' Envy is darker, and it's a driving force in Americal right now. It's the idea that I'm going to bring you down to my size. We lie in wait for celebrities to fail, and then we say, 'Get them! Destroy them!' ... Killing celebrities makes us feel better about ourselves." Seem familiar? 
john curl said:
John, I'm also interested in this, based on listening experiences with different cables, the only logical explanation would be that something happen inside the conductor.
Chascode -
you can find the simulation result here
Harmonics Sim
and the comment here http://www.diyaudio.com/forums/showthread.php?postid=929991#post929991
Sigurd
you can find the simulation result here
Harmonics Sim
and the comment here http://www.diyaudio.com/forums/showthread.php?postid=929991#post929991
Sigurd
chascode said:
Yes, this one is from 2006. There was also something this year, in the times when we simulated the complementary-differential JFET input stages.
Why??
I have shown it here at least 3 times. I am not supposed to repeat it every Tuesday. The difference is that in 2006 I have not simulated it for balanced input/balanced output (or maybe I did, I do not remember), and few resistors had different values. Few resistors, nothing special.
I have shown it here at least 3 times. I am not supposed to repeat it every Tuesday. The difference is that in 2006 I have not simulated it for balanced input/balanced output (or maybe I did, I do not remember), and few resistors had different values. Few resistors, nothing special.
john curl said:
John,
feel free to email me the reference, or a link to it. I did a quick search on AC electromigration, and found far more papers than anticipated.
At interfaces, Holm showed that a typical value of anticipated contact area would be 0.2%. This could give rise to increased current densities, but would definitely give rise to increased resistance. I'm not sure how this would effect electromigration per se, but I do know that the increased dislocation density at mechanical connections have far more relevance than what was believed 40 years ago. These dislocations are also susceptible to wind forces, and in materials with a low Peierls barrier, could lead to dislocation motion.
oh, and calling me doug is just fine.
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