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External Speaker

Discussion in 'Electronic Repair' started by Phil, Apr 1, 2006.

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  1. Phil

    Phil Guest

    My brother has an older TV set , the unit is Cable ready but no line level
    audio output , he uses the TV without a cable box or VCR , no easy way to
    hook up an external speaker , could simply run a wire out of his set to
    another speaker , some speakers are wired with one lug HOT , hate to have
    115 v. running all over the house , he would like to be able to have
    headphones for private listening also , I looked at isolation trans. ,
    resistors etc. , I guess he could use a VCR for tuner also , any thoughts
    would be appreciated .
    Phil L.
  2. JR North

    JR North Guest

  3. inty's world

    inty's world Guest

    if this one has only the rf input
    maybe it has the chassis not insulated from the 120v ac
  4. Guest

    JR North:
    If your 9 year old stereo Maganavox television design is a "hot
    chassis" type AND there are no audio output transformers going from the
    audio power output circuitry to the speakers then the external speaker
    wiring is "HOT" as Phil suggested and it is a real dangerous shock
    hazard. Have you determined if the above is true???

    Yes, you are quite correct, usually the cheaper television designs
    without line level audio inputs/outputs are of the "hot chassis" type
    and the safest way to do this is to use a VCR as a tuner and patch the
    line level audio outputs from the VCR to and external amp and speakers.

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