Weird noise from Speedlite 580EX

Discussion in '35mm Cameras' started by Mark Sztainbok, Mar 3, 2005.

  1. I recently bought a Speedlite 580EX and was just playing with it and noticed
    that it emits a weird noise which sounds a bit like a beep every 4 seconds.
    Is this normal?

    I'm using a newly charged set of new 2500mAh NiMH batteries.

    Mark Sztainbok, Mar 3, 2005
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  2. Mark Sztainbok

    Alan Browne Guest

    Call homeland security NOW!!

    (It's probably just topping off the caps as they oh-so-slightly
    discharge until you get around to firing a barage of photons at some
    unsuspecting victim).
    Alan Browne, Mar 3, 2005
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  3. Mark Sztainbok

    Bruce Graham Guest

    Exactly. He should be glad his ears are still working well enough to
    hear that stuff. (I remember when...)
    Bruce Graham, Mar 3, 2005
  4. Mark Sztainbok

    Lionel Guest

    How loud is it? If it's a typical electronic beep, it may be trying to
    tell you that you that the head is tilted off one of the stops. If it's
    very faint, it's probably the high voltage charging circuit. Try hitting
    the test button & see if it makes a difference.
    Lionel, Mar 3, 2005
  5. Mark Sztainbok

    Mark² Guest

    As the capacitor slowly loses it's stored charge, it keeps adding a bit of power to keep
    it at full power.
    This is normal.
    Both of my 550EX flash units do this as well.
    As others have grateful that you can still hear this.
    I can too, and do not look forward to the day when I can't.
    -Not that this flash noise is particularly beautiful...but there are other sweet sounds
    many folks miss...
    Mark², Mar 3, 2005
  6. Mark Sztainbok

    Frank ess Guest

    No, sir. If I can't hear it, it doesn't exist. Of course I may be a tree
    falling in the forest.

    I spent too many hours with unprotected hearing at the edge of a B-47
    runway. Didn't really know the difference until early in the Personal
    Computer wave when I had a little program that swept the spectrum from 0
    to 20,000 Hz, with a concurrent digital display of the frequency. It
    went "Rumble, oooo ooooo oooooo --- ". Cut off at 3800 Hz, like falling
    off a cliff. Just nothing there, even with great increases in volume.
    New use for the word, "Duh": "Rumble, oooo ooooo oooooo --- ".

    Guard your senses.
    Frank ess, Mar 3, 2005
  7. Mark Sztainbok

    Mark² Guest

    Good advice, Frank!
    At least those B-47s were a worthy reason for hearing loss...
    ....It's better than blowing your life's hearing ability listening to
    young folks are into these days.
    -I must be getting old...

    Here's a question for ya, Frank...
    Did it ever occur to you that your computer SPEAKERS might not have been able to reproduce
    those high sounds?
    Most computer speakers are garbage... -Just a thought.
    (I don't know how high 3800 Hz is, so excuse my ignorance if 3800 is tiddly-winks on the
    pitch scale...)
    Mark², Mar 4, 2005
  8. The highest note on a piano is about 8,000 Hz. So, 3800 Hz is not very
    high....About an octave and a half below the highest note.....
    William Graham, Mar 4, 2005
  9. I stand corrected....The highest note on a piano is a little over 4,000
    Hz....See this neat URL:
    William Graham, Mar 4, 2005
  10. Mark Sztainbok

    Mark² Guest

    But that's still not all that high...certainly not too high for cheapo speakers to
    If Frank can't hear that, then his ears really WERE blasted.
    Mark², Mar 4, 2005
  11. Mark Sztainbok

    Frank ess Guest

    The "sweep" program played through a high-quality sound system. I went
    to the medics for confirmation, and they did. The pitch program William
    G so kindly pointed to runs through an ancient (comparatively) but
    capable Microsoft Sound System. At normal listening levels the highest
    barely audible sound is at 3520 Hz. Full volume (quite loud in lower
    registers) lets me sense a click at the topmost piano key.

    Uh oh.

    Here's some truly off-topic trivia: a few years back I was entranced by
    Huun Huur Tu, Tuvan throat singers. Their _forte_ is differentially
    vibrating vocal cords, creating multiple harmonics audible as
    high-pitched squeals, a few of which I could sense, at high volume. At
    the time of my fascination I was commuting between job sites as much as
    an hour apart, so I had plenty of time alone to develop and practice
    some throat-singing of my own. It took me a long time to realize I was
    not failing, but that I couldn't hear the higher register successes. I
    was tipped off by drivers who passed me and stared with no apparent
    reason. Other than my bulging eyes and poker-faced concentration. How
    could the be staring before they got there? Harmonics, pure and
    Frank ess, Mar 4, 2005
  12. Mark Sztainbok

    JPS Guest

    In message <[email protected]>,
    The audio on a lot of those older computers also didn't produce what
    they were told to produce; they worked often by discreet, coarse,
    integer-length "periods", not even remotely capable of producing
    near-analog "frequencies". Scales were completely out of tune, produced
    by many early home computers. High frequencies (or short periods) may
    have also only consisted of skew-sections of square waves, dropping the
    levels to almost nothing.
    JPS, Mar 4, 2005
  13. Mark Sztainbok

    JPS Guest

    In message <[email protected]>,
    The question is, has he tried it again on better audio hardware?
    JPS, Mar 4, 2005
  14. Mark Sztainbok

    Tom Hudson Guest

    I hadn't noticed it before but my 420EX does the same thing, about every
    2 seconds. Sounds like it's a charging blip to me.

    Tom Hudson, Mar 4, 2005
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