Audio Circuits & Projects

Guitar Synthesizer using CD4046. To achieve the objective, the CMOS PLL CD4046 integrated circuit is used, producing an unusual sound from a guitar which sounds very similar to a synthesizer.

How to add a tweeter to a baffle or speaker. Very simple circuit, using only one potentiometer and two capacitors, very easy to install.

This circuit uses the well-known 555 integrated circuits to generate a range of sounds that are heard through a small loudspeaker.

This metronome circuit with adjustable BPM, allows those persons who study or are music fans, to keep the timing, quite accurately for a long period of time.

This circuit attempts to emulate the operation of a music box. The maximum number of notes is 10, allowing us to make a simple melody.

This circuit has a single input and 4 independent outputs, each amplified with an operational amplifier.

This simple 6 LED VU meter circuit allows us to visualize the level of an audio signal. Due to its few components, it is a cheap circuit and easy to build.

This Microphone Mixer combines signals from 3 different sources (3 microphones) easily and economically.

4 operational amplifiers, some resistors and capacitors to implement an audio mixer with a very simple design.

This 400 watt stereo amplifier circuit uses the Sanyo STK4050 hybrid IC, a high quality low noise amplifier. Its maximum output power is 200W per channel

High fidelity 6 watt audio amplifier circuit with the TDA2613 Integrated Circuit, very easy to implement due to its very few external components

This 2 watt audio amplifier circuit is specially designed to consume little power and to be used with batteries or low voltage power sources.