Recent content by amirm

  1. amirm

    Revel F228Be Review (Speaker)

    I used the Purifi amp with that kind of power and it had no trouble driving them.
  2. amirm

    Otari MX-5050 Review (Reel to Reel Tape Deck)

    Just spent $200 on tapes. Bought two brands. Will compare to see what the difference is....
  3. amirm

    Otari MX-5050 Review (Reel to Reel Tape Deck)

    The digital releases have been heavily processed and screwed up. If what is on tape was released in digital, it would sound even better. But such is not available.
  4. amirm

    Otari MX-5050 Review (Reel to Reel Tape Deck)

    I had a spool of SM900 but loaned it out to a friend (and got his MRL tape I used in this review as exchange). Went to buy a new one just now and price has gone up from $60 to $90!!! :eek:
  5. amirm

    Load limit curve (amplifier voltage and current vs load impedance)

    It presents a fixed set of impedances and at a number of reactances. Of note, it only works for 1 kHz. So it is not programmable in any sense. DC loads is what you are thinking about but they are not suitable for this application because they generate a lot of distortion/noise.
  6. amirm

    Building A Reactive Load for Amplifier Testing

    FYI I built that load and measured a few class D amps (without the additional RC). It seemed to be more work than worth so I stopped.
  7. amirm

    Otari MX-5050 Review (Reel to Reel Tape Deck)

    Needed a change of pace so decided to go after a project I planned almost five years ago, namely measuring my Otari MX-5050 BIII-2 Reel to Reel take deck! Otari was the last company in the world making Reel to Reel tape recorders and sadly, ceased production a few years ago. I got my sample...
  8. amirm

    Hegel H160 problem

    If you are comfortable doing this, take the top off and see if you can tighten the bolt holding down the transformer. Sometimes loosening it helps.
  9. amirm

    Hegel H160 problem

    Is that coming out of the speaker or from amp itself?
  10. amirm

    Dr Floyd Toole's Vid

    I do not.
  11. amirm

    Dr Floyd Toole's Vid

    Looks like a small dog to me. As to being dead or alive, I touched the screen and could not detect the pulse. So maybe you are right, it is used as an absorber. :)
  12. amirm

    Revel M80XC Review (Outdoor Speaker)

    Could be and the grill can have an impact.
  13. amirm

    Revel M80XC Review (Outdoor Speaker)

    It is probably only useful for speakers that can't get very loud, e.g. low end powered monitors. So I like to delete it for passive designs like these...
  14. amirm

    Dr Floyd Toole's Vid

    For copyright reasons and possibly because the image from projection screen in that bright setting would be invisible.
  15. amirm

    GR Research

    One thing about Danny's measurements: they are gated so have no resolution below a few hundred hertz. They are usually fine by the time you get to the crossover frequency but still way too rough by our standards. We need to at some point evaluate one of his before and after mods that is no so...
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