Build Audio Circuts

How to Build Audio Filter Circuits - Circuit Basics

https://www.circuitbasics.com/audio-filters/#:~:text=%20How%20to%20Build%20Audio%20Filter%20Circuits%20,that%20frequencies%20above%20fc%20pass%20without...%20More%20

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Audio Circuits - Circuit Digest

https://circuitdigest.com/audio-circuits

How to Build Audio Filter Circuits - Circuit Basics

https://www.circuitbasics.com/audio-filters/

DIY Audio Circuits - Tutorials, Schematics, Theory, and ...

https://diyaudiocircuits.com/

DIY Audio Projects - Electronics Projects Circuits

https://www.electroschematics.com/category/audio/

Build an Audio Mixer - Projects - All About Circuits

https://www.allaboutcircuits.com/projects/build-an-audio-mixer/

EveryCircuit - Build an Audio Amplifier

https://everycircuit.com/circuit/5252349143023616/build-an-audio-amplifier

It works pretty well. Green is the output, blue is the speaker voltage, orange is the audio input. Here is the list of components needed with some notes on why. Transistors -> 3904, 3906 Diodes-> 1n4148 Trim pot -> 20k Normal pot -> 50k Caps -> 470uF Electrolytic Aux cable -> Steal it from your friend Speakers -> 8 ohm 1/2 Watt Phone -> Audio input Phone charger -> 5v (put a cap on …

BuildAudioAmps

http://buildaudioamps.com/

Audio Projects - Instructables

https://www.instructables.com/circuits/audio/projects/

Simple Audio Preamplifiers - Electronic Circuits

https://circuitlib.com/index.php/projects/product/82-simple-audio-preamplifiers/category_pathway-29

The printed circuit board for the 4th circuit To build the preamplifier, use the recommended PCB of figure 11 and follow assembly instructions of figure 12. When placing TR1, marked as BC213, BC308 or BC328, turn the flat side of its body to the right, and when placing TR2, marked as BC172, BC547, turn the flat side of its body to the left.