Description
This relatively simple mixer was designed for three dynamic microphones, but can be re-designed for more or less. Level and tone controls are available to tailor the sound to your needs.
This relatively simple mixer was designed for three dynamic microphones, but can be re-designed for more or less. Level and tone controls are available to tailor the sound to your needs.
Circuit Diagram
| R1, R2, R3 | 3 | 1K 1/4W Resistor | |
| R4, R5, R6 | 3 | 10K Logarithmic Pot | |
| R7 | 1 | 1Meg 1/4W Resistor | |
| R8, R10 | 2 | 10K 1/4W Resistor | |
| R9, R11 | 2 | 100K Linear Pot | |
| C1, C2, C5, C6 | 4 | 0.1uF Ceramic Disc Capacitor | |
| C3, C4 | 2 | 22nF Ceramic Disc Capacitor | |
| U1, U2 | 2 | 741 Op Amp | |
| J1, J2, J3 | 3 | Input Jacks Of Your Choice | |
| MISC | 1 | Board, Wire, Knobs, IC Sockets |
- Email Anatoly I. Shikhatov with questions, comments, etc.
- R1-R3 are level controls. R9 and R11 control bass and treble, respectively.
- Since the circuit draws such low current, two 9V batteries can be used for a power supply.
- Building the mixer in a metal case will cut down on noise.
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