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Electronics Front audio connector

Discussion in 'Modding' started by mikecx, 11 Jun 2003.

  1. mikecx

    mikecx What's a Dremel?

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    I've been thinking about running an audio connector to the front of my pc for easy headphone usage but I also need the port on the back to go the the speakers. I think I may be over-complicating this but I also think I may need help.

    Now, the reason this is posted in Electronics is because I think I need a circuit to do what I want. I want to hear music from only the headphones when they are plugged in and when they are unplugged from the speakers. The simple way to do this would be an audio splitter and just turning the volume of the speakers off. I am hoping to have it so all I have to do is plug the headphones in and the speakers go silent. I know it's possible but I can't seem to think of how.

    Thanks,
    mikecx
     
  2. ZapWizard

    ZapWizard Enter the Mod Matrix

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    You can do it in a way that I did mine:

    http://www.zapwizard.com/mediapc/SBLIve/Internal_Audio/Index.html

    http://www.zapwizard.com/mediapc/SBLIve/Front/Index.html

    But that solution is not switched automaticaly.

    If you want to do that you need a "Stereo Switched Audio Jack"
    It should be easy to locate.
    You local RadioShack should have one.

    Once you get that it is as simple as wiring into two jacks.
    Code:
    SOUNDCARD---------Switched Jack--------Speakers
                                 +
                                 -------Headphone jack
    
    When you plug in the headphones the speakers automaticaly turn off.
     
  3. mikecx

    mikecx What's a Dremel?

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    Thank you ZapWizard. Another quick question, standard headphone jack is 1/4in. right?

    If so this is my planned purchase. Now, is there any way I could get a schematic on how to wire that up....
     
  4. Lovah

    Lovah Apple and Canon fanboy

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    Well .. its pretty simple , really

    Get the Stereo Switched Audio Jack , as ZapWizard sed

    plug in, one end , into the audio jack out , from ur computer...

    Now u have 2 jack's left.... 1 for ur speakers ... 1 for ur headphone's

    when U put ur headphone's in... the speakers will automaticaly turn off


    U don't need to solder anything.... very simple


    Good luck !!
     
  5. bren2

    bren2 What's a Dremel?

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    i was told with out the proper sheilding if you were to use any wire to hook up the audio from the back to the front like you want to do doesnt that ruin the quality of the sound? or have i been misinformed?
     
  6. mikecx

    mikecx What's a Dremel?

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    I couldn't seem to find them at radioshack's website and the one on mouser looks as though it has to be soldered. Am I missing something?
     
  7. ZapWizard

    ZapWizard Enter the Mod Matrix

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  8. mikecx

    mikecx What's a Dremel?

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    Pardon my ignorance once more, but the one you've shown A.) looks like it only has one input. Where are the out's and how are they wired? B.) Should the local B&M RadioShack have the right kind?
     
  9. ZapWizard

    ZapWizard Enter the Mod Matrix

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    It should have five pins, an dyes you local Radioshack "should" have it.

    Ground, LEFT, RIGHT, and LEFT Switched, RIGHT Switched.

    If there is no cable plugged into the jack the sounds passes to the other two pins. (Going to your speakers)

    When you plug in a headphone, the two pins to your speaker are disconnected, and only the headphones will remain on.

    ouija did this just recently, I am not sure if he made a post about it. But other have done it...:search:
     
  10. Devil_H@ck

    Devil_H@ck What's a Dremel?

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    This won't work if you're using more then 2 boxers (eg a 5.1 system).

    If you do check out my thread: http://forums.bit-tech.net/showthread.php?s=&threadid=32390
    The bad thing is that I found out that audio uses AC current, so the autoswitching part of the circuit won't work :'(.
    Unless some god helps me out (ZapWizard help ;)).

    The manual part of the circuit should work without problems though, but you need to leave the diodes on the LR base wire, because it will block the AC current.
     

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