TWO CHANNEL AUDIO MIXER

  
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The figure shows a basic two-channel op-amp mixer circuit. The gain is equal to R5/R1 or R5/R2 for channel 1 or 2, respectively. Typically R1 and R2 are 2. 2 to 22 k © and R5 is 10 to 100 k ©, and the op amp is any suitable type, such as a 741 or its numerous variations.
TWO CHANNEL AUDIO MIXER - schematic




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