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  • tonep commented on tonep's instructable Anyone can make this 10W+10W amplifier2 weeks ago
    Anyone can make this 10W+10W amplifier

    Hi Kasun. Thanks for your interest. Regarding your question about the power supply, one of the very basic requirements for reproducing sound accurately is ensuring that you are not introducing noise or external sounds to your original signal. A noisy, unfiltered power supply will do just this. If you look at any high quality hi-fi design project, you will find that as much attention is given to the power supply as to the main amp and pre-amp. It's easy to make a good filtered 12V power supply. All you need is a 12V transformer a bridge rectifier and a filter capacitor (2200 uF/25V - 2pcs in parallel for better filtering), or you could use one of the readily available switch mode power supplies, well filtered, small compact and light.As for the bass output for this little amplifier, you ...see more »Hi Kasun. Thanks for your interest. Regarding your question about the power supply, one of the very basic requirements for reproducing sound accurately is ensuring that you are not introducing noise or external sounds to your original signal. A noisy, unfiltered power supply will do just this. If you look at any high quality hi-fi design project, you will find that as much attention is given to the power supply as to the main amp and pre-amp. It's easy to make a good filtered 12V power supply. All you need is a 12V transformer a bridge rectifier and a filter capacitor (2200 uF/25V - 2pcs in parallel for better filtering), or you could use one of the readily available switch mode power supplies, well filtered, small compact and light.As for the bass output for this little amplifier, you will be surprised how much power it can output with medium sized speakers.

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  • tonep commented on tonep's instructable Anyone can make this 10W+10W amplifier1 month ago
    Anyone can make this 10W+10W amplifier

    Hi Greg. Sorry for the late reply. The two capacitors connect the two channels (stereo) of your source (e.g. MP3 player etc.) to the power amp. Another of their functions is blocking any DC appearing at the input.You can use a 12V DC wallwart. Just make sure it is capable of providing at least 1.5A current. 2A would be better. An old (discarded) 12V laptop power supply will be perfect. Just be sure to wire the DC jack polarity correctly.

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  • tonep commented on tonep's instructable Anyone can make this 10W+10W amplifier5 months ago
    Anyone can make this 10W+10W amplifier

    Thanks! I couldn't ask for a better explanation. This is what I love about electronics, no matter how many years you work at it, there's always something new to learn.

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  • tonep commented on tonep's instructable Anyone can make this 10W+10W amplifier5 months ago
    Anyone can make this 10W+10W amplifier

    Thanks jhsa and thanks for the tip. A mosfet will provide the best low voltage drop solution. In this case, the selected mosfet should be able to handle current required by amplifier module at maximum volume as well as the reverse 12V, if accidentally applied.

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  • tonep commented on tonep's instructable Anyone can make this 10W+10W amplifier6 months ago
    Anyone can make this 10W+10W amplifier

    Hi. Thanks.The two caps are not for the speaker output. They are for the audio input. They are connected to the PCB via the volume control. If you zoom in to the PCB you will see that they go to the connections R_IN and L_IN.

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