Recent content by Occam

  1. O

    Lightspeed Attenuator

    Blizard- What are you using to control the multiplying dac? TIA, Paul
  2. O

    The ultimate shoot-out.

    Interesting observation. I'd always thought the rational of shorting the terminals on unused speakers and use the back emf from voicecoil to 'arrest' the acoustically induced sypathetic cone/diaphragm motion. I've found that unshorted midranges on unused but acoustically present speakers can...
  3. O

    Noise filter for PC

    Jeffy, What is the power draw of your server? Is its switching power supply 350 watts or less? The reason I ask, is that the power draw is a large determinant of how much and the nature of the power filtering that can be effectively implemented. The second question is would you be comfortable...
  4. O

    Can a Surge Supressor Degrade Sound Quality?

    Ron, The TVSS provided by the Torus units are certainly not MOV based, though is implemented properly, MOVs are quite effective and non-intrusive. Actually, Torus uses the exact same series mode surge technology that is used by SurgeX, save for the fact that the Torus doesn't require that 100...
  5. O

    Post a random fact about yourself!

    I met my long suffering wife (of 40yrs, as of tomorrow) at Balkan folk dancing...
  6. O

    How to Solder: An Illustrated DIY Guide to Making Your Own Cables

    and if you're doing your soldering in anything but a VERY well ventilated environment, or outdoors, especially if using solder containing lead, one should use a fume extractor, like this one from Hakko - I taught a lab course to Seniors majoring in EE at Brooklyn Polytechnic (now part of...
  7. O

    Audio Science: Does it explain everything about how something sounds?

    David, I'm really quite surprised you see it that way, as from my perspective, you're one of the few here applying 'science' properly. You are going for a 'direct proof/verification'; can an assertion be proved with some statistical certainty, . An 'indirect proof/verification' requires a...
  8. O

    How to Solder: An Illustrated DIY Guide to Making Your Own Cables

    Excellent DIY guide! For those of us less adept at soldering, I'd recommend an eutectic solder 63/37 (Sn/Pb) rather than 60/40 for its lower melting point and minimizing the possibility of cold solder joints. There are also lead free eutectic solders Sn/Ag/Cu...
  9. O

    Another electrical question

    A given. I'd not realized folks were using diodes in their standoffs 60 years ago. Neat. Is that similar to the ground loop breaker I referenced previously? And finally, there are ground loop breakers, which placed between a signal ground and the safety ground, can deal with a multitude of...
  10. O

    Another electrical question

    Hey Dave, Excellent post! I've also found that the ground conductors characteristics, as well as its geometrical relationship to line and neutral conductors have a substantial impact on both subjective and objective measures. Increased leakage to mains safety ground, Y capacitance, seems to...
  11. O

    Another electrical question

    Speedskater, Thanks for the excerpt. If its not too much trouble, you might provide a link, or at least the name of the paper, so I, and others could read it. TIA, Paul
  12. O

    Another electrical question

    Hi David, I'd a number of reasons... 1. I was being polite, and the comment had no bearing on the 'meat' of my post. Nor did Ralph state anything that I thought theoretically impossible. His hubris might well be justified. 2. While I have read Ott, the possibility of my implementing a...
  13. O

    Another electrical question

    Ralph, I've no doubt that a system comprised exclusively of your components would be ground loop/noise free, even with single ended connections. But you don't make digital components, and many less discerning folks might find such an approach limiting.... As DaveC and Speedskater said...
  14. O

    Negative show report posts... enough is enough.

    ... and for the very same reasons, some folks are just too stubborn to ask for directions.
  15. O

    I am a luddite - in other words Mains Cable

    If your intent is to non-invasively/no electrical connection, fully measure currents in situ on av components, rather than with a simplified, partial cycle, physical approximation ala DTCD, you could use a Rogowski probe like the PEM CWTLF or LFR AC current probes...
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