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cassette player modification

Discussion in 'Electronic Basics' started by J. Lee Williams, Jr., Nov 21, 2004.

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  1. Hi!

    I'm attempting to add an auxilliary input to a factory radio in a 2004
    Mazda 6 with an in-dash cd changer and modular cassette deck. As far
    as I know, no company is yet manufacturing a solution for adding
    Aux-INs to this head unit.

    My question is this-

    Would it be possible to tap into the cassette deck (which never gets
    used) behind the actual tape mechanism and modify it to accept a
    standard RCA line level signal? I'd like to avoid using a tape
    adaptor if possible.
  2. Bob Masta

    Bob Masta Guest

    If this unit has real potentiometer volume controls, then this
    is probably electrically a simple task. In most situations,
    the volume control sits just ahead of the power amp stage,
    which expects to see (approximately) a line-level signal
    coming from the preamp (tape or whatever). So you can
    locate the control and do what you want. You can disconnect
    the input (the pin that the wiper would touch if rotated fully
    clockwise) and connect it to your aux input, or you can put
    in a switch, a mixer, whatever. Note, of course, that there
    will be two controls in tandem for stereo. (The opposite
    pin of the control is ground, the middle is the wiper.)

    If it's a digital control, all bets are off.

    And even if it's a real potentiometer, the chances are
    that this will be a mechanically difficult job. They don't
    make consumer products with the idea that they will
    ever be worked on. Plan to bend alot of little sheet
    metal tabs, and learn some colorful language!

    Hope this helps!

    Bob Masta

    D A Q A R T A
    Data AcQuisition And Real-Time Analysis
  3. Rich Grise

    Rich Grise Guest

    I'd think that he could go directly to the head wires, with a proper
    attenuator. But I'm a "Real Hacker", so I do some pretty brave stuff to my

    Good Luck!
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