Recent content by dvw
  1. dvw

    Objectivists board room

    A perfect symmetric square wave will have no DC component. However, clipping is caused by limitation of the voltage swing or current limited. In practice, you will need a perfect symmetry in plus and minus supply to maintain perfect symmetry. If not you created a DC offset. The amplitude of the...
  2. dvw

    Objectivists board room

    TCP does not have a speed limitation. It is just a protocol. Howeve, you are right it is not suitable for real time application. The reason is when there is data loss , it will resend AND adjust the transfer rate. So if there is a lot of lost data, the transfer rate will get slower and slower. I...
  3. dvw

    Objectivists board room

    A signal consists of multiple frequency. A clipped waveform has some DC component to it. An inductor (speakers) appearsto DC as just a wire. So the DC content is what destroys the speaker if it is large enough.
  4. dvw

    Yes Virgina, There is a difference in USB cables

      If you consider jitter and bit error to be major contributing factor, then you don't even really needs to AB the cable. Bit error and jitter make very distinctive sound. It is not subtle at all. No need for "sensitive" equipment. it is a myth.
  5. dvw

    The voodoo-less cable thread. Reasonable cable vendors and reviews.

    What you said are all true. However, continuity and corrosion are not the only flaw in cable particularly a new cable. He is complaining about a loss of bass not a subtle reduction or lower bass. I have experienced such loss due to a bent connector. On a 60 LP where they have recording "stereo"...
  6. dvw

    The voodoo-less cable thread. Reasonable cable vendors and reviews.

    Bad cable? DC is as low as you can get. If your cable does not pass DC then you've got a problem. It is most likely a defective cable connector. Try a different cable or connection. There are bad cable and I had some.
  7. dvw

    Audiophile cables, an interesting question.

    I can  only tell you the factory name in a PM. Factories does not like outsider to disclose their client list. This factory is a fully integrated headphone manufacturer and has been in business for over twenty years. They have three locations in China manufacturing  all components including...
  8. dvw

    Audiophile cables, an interesting question.

    Not true. I know the owner of the factory and I visited the factory just 6 months ago. I have seen both the products in production. The factory also happened to be the only Apple approved factory in headphones. So I don't think any sourcing will change in the near future.
  9. dvw

    Audiophile cables, an interesting question.

      Monster does not own the actual factory that manufacture Beats. It is owned by a third party OEM/ODM which also manufactures many other brands including some of the very highly touted headphones. Monster headphones and Beats are manufactured in the same factory though.
  10. dvw

    cables are placebo

    HDMI cables have to be certified before they can bear the HDMI logo. There are cables with the logo but not certified. HDMI forum is actively pursuing violators and suing them for the violation.The boutique cables are most likely not certified, You will be taking a huge risk by paying a...
  11. dvw

    Cable burn in -- what are the arguments in favor, if any?

      Maybe the reason why they are so expensive is precisely they cannot be measured or verified. The QA process involved might be hiring someone to listen to the cable and measure the soundstage with a ruler from their head to make sure they meet the spec. Or maybe it's a rip off?
  12. dvw

    Cable burn in -- what are the arguments in favor, if any?

    If cable burn in is real, then we are in a big mess of troubles. Audio is low frequency application and it is not critical.  But if cable burn in is real, that means the electrical characteristic changed somehow overtime with usage. Communication cables are specified for very specific...
  13. dvw

    The "Burden of proof" vs "A post describing how science works"

      This will also depends on what has been claimed. If I claimed I heard a difference in the cable, do I have to prove the difference exists or what caused the difference. It is the explanation that people refuse to accept. The burden of proof does not help in this case. Am I not entitled to an...
  14. dvw

    High Fidelity

       How true. There are only a handful of manufacturers making the headphones and the driver. The folks that make the Sennheiser and the AKG are probably also making the Beats and the other generic brand. One guy I know that makes a very high end brand uses the same driver and same enclosure...
  15. dvw

    How and why do members fall in love with second tier headphones?

          Exactly. They came up with a way to implement large diaphram. This was done before as well. But this is still a dynamic driver. I would call this evolutionary not revolutionary. Same reason why the JVC carbon tube headphone is not revolutionary either. HD800 is one of the most linear...
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