Recent content by jack black
  1. jack black

    Frequency response graph can be very misleading to say the least

    UPDATE:   My bad, my bad, my bad. The headphones I received are not KSC75 but KSC21! The only reason I found out, I happened to go to Koss website and looked at pictures and the headphones I received exactly matched KSC21. I'm very unhappy with Amazon to say the least as I ordered KSC75...
  2. jack black

    A question about frequency response, particularly treble.

    Are you talking about headphones? if so, I believe it has to do with resonance and other acustic properties of external ears. 
  3. jack black

    Frequency response graph can be very misleading to say the least

    Iniamyen is right. I was also confused myself by the semantics of the word decay. I guess the strict meaning of sound decay is the opposite of sound persistence.
  4. jack black

    Frequency response graph can be very misleading to say the least

    I used both laptop soundcard (that sounds decent to my ear) and my old, but mid-range 5.1 receiver set to Stereo without any DSP. Don't know about the actual impedance values in the amps.   I'm now convinced that the sound decay is the issue, as the Japanese graphs show a huge difference...
  5. jack black

    Frequency response graph can be very misleading to say the least

    Quote:   You meant as little as possible, right?
  6. jack black

    Misconception of "neutral / accurate"

    Quote: Great article and I agree 100% on the fidelity and accuracy thing.   So, where did the preconception of "pro audio gear sounds too analytical" came from if it's so widespread? Do people audition "pro" gear that has lots of coloration? And what "analytical" means? Are we talking...
  7. jack black

    Frequency response graph can be very misleading to say the least

    OK, I found a decent description of decay here: http://www.ecoustics.com/electronics/products/articles/131062.html   Looks like it's bad in midrange (coloration) and boosts bass in low range. Please feel free to correct me if I misunderstood.
  8. jack black

    Frequency response graph can be very misleading to say the least

    Quote: I don't know about that. The transducer should mimic what mike is hearing. if the note is still ringing, the mike will keep sending the signal to the transducer. It's not like we are plucking the transducer itself.
  9. jack black

    Frequency response graph can be very misleading to say the least

    You guys are awsome! I'm learning so much.   The waterfalls seem to show a lot of bass decay in Sony and near 4 kHz decay in Koss and that seems to correlate to the strong bass in Sony and near 4 kHz peak in Koss that I could hear/measure.   But would decay would be audible when using...
  10. jack black

    Quick multiple choice poll: Which factors do *you* think make an audible difference?

    Quote:   OK, fair enough. But since there was no "none of the above" answer available, I voted "price" as we do know from research that what we see effects what we hear. Besides, placebo effect is very powerful.   But wait, considering placebo again, "all of the above" should be the...
  11. jack black

    A crazy thought: do flat, monitor style transducers tend to produce "unpleasant", harsh effect while listening to typical music?

    In other words, is soft, ear pleasing sound an effect of rolled off low and high frequencies matching the hearing FR and eliminating some of the source imperfections in low and high frequencies such as harmonics, clipping, distortion, mike pop, and such?   Rationale: most pop music is mixed...
  12. jack black

    Frequency response graph can be very misleading to say the least

    Quote:   Thanks for the explanation on positioning. It makes a lot of sense. I have a feeling the Koss' on the ear gismo does a poor job with my large ears.   As for "burn-in", if there is such a thing, Sony's sounded the same out from the box. And I have 2 of those. I used Koss...
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    graphCompare.php?graphType=0&graphID[]=1023&graphID[]=1513
  14. jack black

    Panasonic EAH-500

    I'm reviving this old thread because this is the best info on these headphones on the entire web. I got interested in the vintage headphones and EAH500 caught my attention as it's listed on the 416 headphone museum list and there was a recent cheap ebay listing that I lost as I was trying to...
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