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  1. J

    Switching all my cables to Cabernet-Sauvignon-infused for superconductivity

    Clearly you are in error. It should be "I Feel Fine" jn
  2. J

    Do I really need to concern myself with Balanced connections?

    Ah, I just figured out why...that's my 535 kcmil twisting fixture. The plywood is 7 inches thick, the sheetrock screws are 12 inches long with three inch heads...and the motor is a 3 phase 200 hp beast.. I'll be sure to reduce the naked jpegs on my hard drive prior to uploading again..sorry...
  3. J

    Do I really need to concern myself with Balanced connections?

    Sorry, I'm rarely clear... When we need a specific twisted pair or tri, we normally just unspool the amount needed plus abut 5%, tie one end to a doorknob or some equally technical attach point, and chuck an eyebolt or coathanger into a hand drill. Attach the wires to the drill, then spin it...
  4. J

    Do I really need to concern myself with Balanced connections?

    It is not difficult to make a twisted triad which maintans a constant impedance on all three wire combinations. For example, 100 ohms + to - and 100 ohms each to "pin 1". All one has to do is maintain insulation contact between all wires. Twisting with a drill will not do that, as the unwrap...
  5. J

    Power . How much do we need...

    I have had two different scenario's for blown tweeters. 1. Total power: vc burnout as a result of beating the living daylights outta the system. Autopsy of the tweeter shows a dark brown mess, burned epoxy and such. I have one such example I use as part of my tours...a combination of...
  6. J

    Banned for life....what's your story?

    That's also happened to me as well. In my case, the moderator informed me (after I asked), that the mods did not have the tools to cut specific posts out and re-establish a tree link. Offensive posts prior to mine were culled, I was collateral damage. The mod was a nice guy, on occasion we...
  7. J

    Banned for life....what's your story?

    The question is allowed. The answer is not.. cheers, jn
  8. J

    Banned for life....what's your story?

    I've had timeouts applied, even though they were "unjustified"..:confused: One forum owner had my privileges modified so that I could no longer post schematics or diagrams in support of my arguments. That was a weird one. I had provided evidence in support of biwiring, and that was not...
  9. J

    The Cable Dialectic

    Interesting. I AM one of the measurement crowd..:confused: You only need to match two loudspeakers, the center one can stand alone. It's not a case of frequency response or phase amplitude with the center one. As to your comment regarding speaker differences swamping the cable effect...
  10. J

    The Cable Dialectic

    Oh, forgot to mention this. If one cable is found to delay some of the spectral content with respect to another, a typical argument is along the lines of ""yes, but since both cables have been swapped out, the delays are symmetrical therefore the change is net zero."" It does sound like a...
  11. J

    The Cable Dialectic

    I've seen that stuff before. Simulations and measurements which say "too small to be audible". Unfortunately, our ears discern things the measurement apparatus has not been setup to find. As an example, at 1khz we can discern interchannel differences of roughly 2 uSec. This discernment...
  12. J

    Shunyata Research develops DTCD

    I do not understand why they need to measure long spools of wire to determine the per foot parameters. It is easy enough to measure a 6 foot piece to get the capacitance and inductance. Yes, they do need to know how to zero the meter, but that's pretty trivial if one reads the manual...
  13. J

    The Cable Dialectic

    Shame. Although, comparison of a 25 ohm Z #17awg vs a 120-150 ohm Z #17awg is not very interesting.. I had to run a 4 ohm cat5e cable to do a test here, I needed 10 uSec risetimes of 40 volts into a 4 ohm load, so ran 6 cat5e cables in parallel, solids together and stripes together. It...
  14. J

    RF Speaker Cables: Bi-wired!

    Ah, you have a 401 as well, eh? My plan is to retire after I win the nobel prize in physics. I dinna say t'was a good plan... jn
  15. J

    Reflections and DACs

    I was wonderin if earth's field had finally flipped again. Cheers, jn
  16. J

    The Cable Dialectic

    This was a very long thread, did anybody point out that 8 strands of #26 awg is actually the equivalent of #17 awg, not 8? edit: yup, took a while to find it. Dr_jitsu...truer words were never spoken..AVS seems to have fallen to the dogs, it's a shame. gary..let me know if you really...
  17. J

    RF Speaker Cables: Bi-wired!

    Interesting modelling, thanks Don. I would not be worried about the system's response to high speed transitions, as they are only a modelling tool for t line analysis. Yes, the analysis shows some really interesting spikes and all, but in real life there is no energy at those frequencies...
  18. J

    Reflections and DACs

    ??? jn
  19. J

    Power cords, a trip into the unknown!

    Does it buzz with the lid off? jn
  20. J

    Power cords, a trip into the unknown!

    No. The circuit resistances will limit it. Cheers, jn
  21. J

    Power cords, a trip into the unknown!

    Agreed. This is certainly how our superconducting magnets work. For our room temp magnets, there is the constraint of Rs in the winding of the magnet. For an amplifier in the home, the utility transformer secondary, the feed wires from the pole to the load panel, the breaker, and the romex...
  22. J

    Power cords, a trip into the unknown!

    Moi?? Shirley you jest.... I've always questioned that DC thingy. My house is fed from an autotransformer on the pole, and I really can't see how the system could put dc against my in the house transformers.. Oh, e-core xfmrs also may have threaded rods through holes in the lams at...
  23. J

    Power cords, a trip into the unknown!

    Thank you. My apologies for starting out too strong earlier, I looked at what I posted in response to you and really was unhappy with my written demeanor..sorry about that. I blame the yap yap dogs on another forum for constantly nipping at my ankles.. Cheers, jn
  24. J

    Power cords, a trip into the unknown!

    Oh, that's different. Cables won't fix that. Either there are laminations loose or the chassis is flexing from the external field of the transformer. If you touch the chassis neat the xfmr and the sound changes it may be the chassis itself. If not, my guess is the lams. To answer...
  25. J

    Power cords, a trip into the unknown!

    Interesting. Balanced, unbalanced, shielded, twisted, q's? Simple proximity of two twisted pairs where there is an integral relationship between twist pitches can easily couple more. When I twisted my ic's around my power cord, I made very certain that the twist pitch of the power cord was...
  26. J

    Power cords, a trip into the unknown!

    edit: not a small loop..wrapped the entire length. Yes, it is certainly worth a try. Even balanced can have the problem, this is generically a pin 1 problem. But first, just try proximity to. If that reduces the hum/buzz at all, then that would seem to indicate strongly that it's...
  27. J

    Power cords, a trip into the unknown!

    My first thought is no. My second is, try moving the IC's around. I've solved problems by actually twisting the ic's around the power cords ( although my example of 125 foot cords is kinda extreme).. Think of the IC's and power cords as defining a loop in space, and that any magnetic fields...
  28. J

    Power cords, a trip into the unknown!

    Ah yes, that is different. IIRC, this requires there be no possibility that an internal fault can cause external surfaces to become hot. Akin to the double insulated two prong devices. Ya know, if the demand for input balanced transformers were large enough, I bet they could become cost...
  29. J

    Power cords, a trip into the unknown!

    Totally agree. The safety problem is...in the event of a hot to chassis short within the chassis, what happens with the resistor? a 10 ohm resistor will cause 12 amperes at the breaker, which will not cause the breaker to clear. This leaves a chassis hot at the level of 120 volts forever, or...
  30. J

    Power cords, a trip into the unknown!

    Ah, where's my manners. First pics from me, be gentle, I'm learning here...text to follow if I'm lucky.. Aha...pdf's don't open immediately..good to remember.. First pic is the derivation of the ground path any current from the source takes in returning to the source. One would think that...

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