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Thread: Bridge Chipamp based on TDA2050 60W

  1. #11
    diysmps Senior Member Lira's Avatar
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    Mar 2011
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    Hi! Can you post some pics of your assembly? I'll be glad to help you.

    Best regards
    Studying electronic engineering
    Fanatic for audio
    Crazy for biiiiig speakers

  2. #12

  3. #13
    I put a resistor of 2.9ohm instead of 2.2ohm, because that by 2.2ohm was burned and I had no other 2.2 ohms

  4. #14
    diysmps Senior Member Lira's Avatar
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    This amplifier is not stable on todays ics, all thanks to counterfeit parts!

    Quote Originally Posted by marcopi99 View Post
    I put a resistor of 2.9ohm instead of 2.2ohm, because that by 2.2ohm was burned and I had no other 2.2 ohms
    From what i see on this amplifier, the schematic is a copy from the tda2030 datasheet with the modifications suggested on the datasheet for tda2050. I built a couple of this amplifiers, the sound is OK, but the ics gets too hot. I´m using a 12V 0 12V 5A transformer that gives for about 18V 0 -18V DC. I just don't build this amplifier anymore because none of the TDA2050 available today is original, they just burn too easy. In the ST homepage the datasheet is marked as obsolete, so all new tda2050 available parts are counterfeit, it's very rare to see an original today. My advice is to not build this amplifier unless you have a good heatsink and original TDA's, For now just stick with the single version as they work ok on most counterfeit parts.
    Studying electronic engineering
    Fanatic for audio
    Crazy for biiiiig speakers

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