Category Archives: Audio

Audio schematic diagram



20 Watt Audio Amplifier with LM1875

This is 20 watt audio amplifier circuit design which use IC LM1875 as main component. This circuit is simple and very easy to built. For stereo channel, you need to build the two same circuits which will amplify the both of audio channels (right and left channel). Dual polarity / symmetrical power supply required for… Read More »

Loudspeaker System Crossover Network

Building a crossover for your speaker system is easy. Here the simple passive schematic diagram of audio crossover: Loudspeaker System Crossover Network Notes: Capacitor must be non-polar capacitor types with a voltage rating of 50 volt or more (preferably 100 volt). Capacitor may be paralled to achieve specified values. Inductors should be air core. Do… Read More »



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