Guitar Microphone Mixer Electronic Audio Kit for musicians


Posted on Feb 5, 2014

The mixer is really handy for DI`ing guitars and basses into soundcards or other mixers and making use of channels on mixes that do not have mike in`s, it comes in handy for one or two guitarists that want to sing and play through one guitar amplifier as well. The printed circuit board will not be exactly the same as the one in the pictures, it wi


Guitar Microphone Mixer Electronic Audio Kit for musicians
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ll be a bit better it has pots mounted on the broad in the same way as they are mounted on the board for the compressor. A second board design with a slightly different arrangement of the plots to suit lower impedances and separate direct outputs for soundcards will be included. The difference between the two arrangements in respect to specifications is unnoticeable. The components on the first board may be rearranged and tracks broken to form the circuit provided by the second board or the board that best suits your application can be chosen. If enough interest is expressed in this project there maybe a ready-made PCB board available through this website. The bias voltage for all of the opamps is derived from a voltage divider consisting of two 10K resistors that provide a mid voltage point, this voltage is then amplified through an opamp to lower noise introduced by the resistors, the output of this opamp is the bias input for the other opamps. If you are going to be using the same supply voltage all of the time then noise can be lowered a little more by replacing one of the resistors in the voltage divider with a zener diode, chose a zener that is close to half the supply voltage. The mixer is really handy for DI`ing guitars and basses into soundcards or other mixers and making use of channels on mixes that do not have mike in`s, it comes in handy for one or two guitarists that want to sing and play through one guitar...




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