Mixers Circuits
2 Line Output Combiner: Convert consumer equipment stereo signal to mono or combine audio signal from two different equipments to1-input.
4 INPUT MIXER: This is a very simple 4 input audio mixer using op amps, potentiometers resistors, decoupling caps on the inputs and the whole unit has a balanced output good little circuit.
6 Input Mixer: 3 line inputs and3 mic inputs
Advanced Mixer Design: good article on large audio mixer design, read also Noise & Headroom in Mixers
Ever Amplifier Bridging: a design for a simple add-on bridging adapter for stereo power amplifiers.
High Quality Sound Mixer: very ambitious and expected to be very expensive mixer project, modular design.
line Mixer: mix two line level sources to1-signal, includes separate volume controls for both signals, passive circuit.
Microphone Mixer: Designed for3-dynamic microphones.
Stereo Mixer : Can mix four separate audio inputs to mono or stereo output signal
Two Line Output Combiner: Convert consumer equipment stereo signal to mono or combine audio signal from two different equipments to1-input.
Unbalanced Mute Circuit for Audio Mixing Channels: application note in PDF format.
Voice Over Circuit: Switches automatically from sound source to microph1-when enough sound comes in from microphone.