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tda2050 single channel amp module

Discussion in 'Audio' started by rtrg, Aug 16, 2019.

  1. rtrg

    rtrg Regular member

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    I have 2 tad 2050 modules and 2 2030 modules. I made 2 pairs of amplified speaker using the 2050's. Only common connection is a "Y" on the input side to accept the stereo source. works perfectly as expected.

    for the 2030's there are issues. there are 3 paired connection points clearly marked for polarity, 12 volt DC in, AUDIO IN, AUDIO out. when I common the input and output using stereo 1/8 jacks, there is a loud "buzz" in both headphone pieces, and the sound is mixed mono. Not what I want or expected. Should I wire them separately and use a "Y" on in and out? The connections are screw terminals at all points. Solutions?
     
  2. rtrg

    rtrg Regular member

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    I found the solution. I made 2 stereo male to bare wire mono "Y"s and the same with a stereo jack. Issue solved. In addition all 4 boards were marked INCORRECTLY! The polarity was reversed at al 3 connection points. Only the foil side revealed that! Never came across such an error.
     

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