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    171 x DIY Audio Projects

    Browse through a total of 171 Audio amplifiers, filters, generators, mixers and audio preamplifier circuits. Huge collection of audio projects, kits and the circuits schematics for diy easy-to-build audio kits.

    2N3055 circuits   audio amplifiers   audio compressors   audio equalizers   audio filters   audio generators   audio indicators   audio mixers   audio preamplifiers  

    Muting Transistor Attenuator Circuits and the 2SC2878 Among semiconductors, the muting transistor and its audio application is perhaps the most obscure and poorly understood of all. There is extremely little information on this subject available on the internet and what is available is sketchy. This discussion is an attempt to tie the pieces together and to add some insight –I...
    CMoy Headphone Amp The CMoy headphone amp is a popular headphone amplifier that is small enough to carry everyday and powerful enough to drive headphones at higher levels than normal. Most headphones and most sources will get along ok, but there are players with weak output, and high end headphones typically give up efficiency for the best...
    Hybrid Headphone Amp Potentially, headphone listening can be technically superior since room reflections are eliminated and the intimate contact between transducer and ear mean that only tiny amounts of power are required. The small power requirement means that transducers can be operated at a small fraction of their full excursion capabilities...
    Audio Compression Amplifier /AGC This is an audio compressor/AGC (automatic gain control) with an astonishing 75db input voltage range. A P-Channel JFET is used as a variable resistance element that is applied as a variable attenuator. Distortion is minimized by keeping the signal voltage across the JFET extremely low (1.3mV). This is an improvement over...
    Kojak Siren Here is a very simple Kojak siren that is built with two 555 timer ICs and has 2 linear potentiometers that allows the control of sound speed and tone. IC2 produces a sound that can be adjusted with P2 and then drives a small speaker. The amplitude of the signal is modulated by IC1 with a low frequency signal. The modulation...
    LA4440 Audio Amplifier Application: Make your own computer speaker system. This simple and inexpensive project will let you set up a small audio amplifier and let more sound out your computer. Description: A simple audio amplifier based on the LA4440 IC. This will take your computer’s headphone level output and amplify it to drive a pair of...
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