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Thread: current sensing a/b switch

  1. #1
    Maximum Bitrate albysure's Avatar
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    Dec 2000
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    pittsfield, ma.
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    685

    current sensing a/b switch

    just a little something i came across. this circuit connects to the rca's of unit 1 and when unit 2 comes on (a head unit, etc) it senses the current draw and switches the rca's to unit 2.

    i used to install an earlier version of this that switched speaker outputs. it was awhile ago when we installed under dash cassette players to factory head units. (am i getting old or what)

    this would be a good idea for someone with a head unit with no aux inputs.

    http://www.davidnavone.com/detail.asp?PRODUCT_ID=N-806

  2. #2
    Newbie
    Join Date
    Mar 2003
    Location
    Orange, CA
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    38
    I'm not sure if the device you have linked to will work for me, since my head unit has a built in amp, and I am not sure if i can actually get to the line level outputs.

    If possible, could you read my thread here , and advise if you have any ideas for me?

    I'm currently searching old posts for related issues (which is how I found this post of yours).

    Thanks!
    Car: 2003 Nissan 350Z
    Installed: Epia M9000, Casetronics 2699R Case, Crucial 256mb DDR, Maxtor 60gb 3.5" HD, Toshiba Slim DVD, Pioneer 3.5" Slot DVD, Gyration RF Keyboard/Mouse, Deluo GPS Receiver, Windows XP Pro, D-Link 2.4ghz usb wireless adaptor.
    Pending: 6.4" LG Phillips VGA Touchscreen, some type of alternate/additional power supply, Audio Connection

  3. #3
    Maximum Bitrate albysure's Avatar
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    Dec 2000
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    pittsfield, ma.
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    685
    well heres the link to the company i used to get ther switchers from. try to contact them and explain what you want to do. maybe they can help. you might need to lower your voltage from your radio to make this work


    http://www.magnadyne.com/index.cfm

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