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I want to blow up my brother's speakers

Discussion in 'Electronic Design' started by [email protected], Aug 31, 2007.

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  1. Guest

    I always wake up to my jerk brother blasting terrible music. He is an
    evil person, and doesn't care about others. Fighting won't solve
    anything. Talking won't solve anything.

    I want to make a circuit and implant it in his speakers. Something
    that will allow me to control the speakers (wireless transmitter?) or
    just to limit the volume.

    Any suggestions? Even something as cheap as soldering a resistor in
    there or something to limit the gain.

    Thanks!
    tom
     
  2. Charles

    Charles Guest

    SQUIB + M80
     
  3. Joel Kolstad

    Joel Kolstad Guest

    Just disconnect the internal wire between the speaker proper and the speaker
    terminals. If you do it right, you can make it look like it was a poor solder
    joint to start with and just fell off. Tell your brother you figure that the
    loud music caused enough vibration to knock if off. :)
     
  4. Guest

    Yes, but that won't mess with his head enough. :)
     
  5. Guest

    This is a good idea, but i don't want it to turn off right away, cause
    that will only cause him to get new speakers. If it would only bring
    it down to a level that he would live with and not go buy new
    speakers. Or the best would be to be able to cause distortion or
    change the volume by remote at will. though that may too expensive.

    Thanks much for the prompt replies so far y'all.
     
  6. DJ Delorie

    DJ Delorie Guest

    Disconnect the wire and add a high-watt variable resistor, about 100
    ohms, in series with the speaker. Every day, turn the resistance up a
    little. After a few weeks, the sound will be almost too quiet to
    hear.

    For more fun, just fiddle it randomly every day.
     
  7. Dunno. A stun gun around the speaker cables and especially the connected
    equipment would do the job.

    Even if it doesn't stop it, threatening he's next might do it.

    If he doesn't already know how much a joule of energy hurts, he'll soon find
    out...


    Or if a stun gun is illegal in your part of town, I'm guessing a baseball
    bat isn't. Gives a much more visual representation of your frustration. (and
    it's great fun to smash stuff too).
     
  8. Guest

    Tom,
    Diodes in parallel, reversed end for end, are used as clippers -
    inside the box at the cabinet speaker terminals. If too quiet, add
    another pair in series. If he cranks it, it will sound horrible. If he
    keeps it cranked, the high frequency content of the clipped audio (the
    more square the waveform, the more HF content) will burn out his
    tweeters.

    Does anyone remember the solution for cassette offenders? A piece
    of clear tape on the tape head would keep the tape further away from
    the tape head. Reduced magnetic field strength from the tape = reduced
    volume.
     
  9. Eeyore

    Eeyore Guest

    Your 'ideas' are invariably STUPID.
     
  10. Jamie

    Jamie Guest

    I have an idea.
    Ultrasonic side band audio from one side of the room aimed at his
    nesting point and the carrier of that from the other side, aimed at
    his nesting point.
    You can't hear either one until you are in the path of both.
    with that, you could sit there with a microphone to generate some
    nice spooky sounds that he only can hear at that position..

    Any ways. I have had for a few years now a little stereo that
    inputs into a box which composes of a double balance mixer to generate
    the side bands, that goes to an ultrasonic emitter. one for each
    channel. And have a center radiator that composes the carrier.
    I position the units so that I can listen to my stereo at my desk with
    out others hearing it.

    It really freaks out people when they come over to talk to me.

    I've also heard something on the effect of that technology being used
    for criminal acts.
     
  11. Guest


    Maybe it's time to find a new place to live, instead of resorting to
    vandalism...?

    Just a thought
     

  12. 100 ohms? Check your math.


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
  13. DJ Delorie

    DJ Delorie Guest

    Um, ok...

    Day 1, set it to zero ohms. 100% of the current goes to the speaker.
    0db

    Day 2, turn it up to 8 ohms, 50% of the current goes to the speaker;
    1/4 the power, that's down, um, 6db?

    Day N, up at 100 ohms. 7.4% of the current goes to the speaker, about
    0.5% of the power. -22db?

    Ok, I've checked my math. Now what?

    This assumes a constant signal amplitude into an otherwise 8 ohm
    speaker.
     
  14. Eeyore

    Eeyore Guest

    Terrell was just being an asshole.

    Graham
     
  15. D from BC

    D from BC Guest

    Use foam ear plugs until you move out.
    D from BC
     
  16. Robert Baer

    Robert Baer Guest

    Just plug them into the power outlet...
     

  17. You think that attenuation will make it inaudible?


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
  18. YD

    YD Guest

    Late at night, by candle light, "Michael A. Terrell"
    Possibly not, but a lot more bearable, wich seems to be what the OP
    wants.

    - YD.
     
  19. DJ Delorie

    DJ Delorie Guest

    No, but it will make her brother think the radio's broken.

    Besides, if you go much higher, you lose precision in the loud end.
     
  20. default

    default Guest

    You could, build a small DC power supply from the AC drive to the
    speakers then use that to power a 555 timer to periodically interrupt
    the connection to the speaker with a relay. Hide the whole thing in
    the cabinet - or use the AC/DC to operate a relaxation type oscillator
    that would only begin adding interrupting the speaker when the output
    level was enough to charge the relaxation capacitor (I like that idea
    better since it may condition him to using less volume).

    High power amp will supply ~150 volts to the speakers so the PS would
    have to work over a wide range of voltage

    Relaxation oscillators can be made with unijunction transistors or
    four layer diodes (virtually extinct - but can be duplicated with
    jfets)

    Or your circuit could incorporate a comparator to just cut the speaker
    when the volume got too high and switch in a dropping resistor to
    lower the volume.

    Hell, you could really have a lot of fun with this!
     
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