I am trying to create an audio preamp circuit for getting a clean audio signal from an electret microphone to a small mini DVR that runs on 5v DC. The mic and circuit will have a 9v or 12v supply. I have been working on this nightmare for over two weeks and could really use some specific input. The Eagle schematic (.pdf) is attached. Can anyone verify that this circuit appears to be correct? I bought some OPA2134 op amps by mistake and that is why you will see the second, non functioning symbol in the diagram. I am not sure how to treat those pins. I am also not sure specifically where to run my grounds. My DVR is a small 5v type for drones. If you google images "Readytosky DVR" you will see the pinout. There is a black 'audio in GND' and a white 'audio in +' on the DVR. I want the DVR to record soft voice and to be on the sensitive side to pick up animal sounds around a feeder at night.
Can anyone help me by looking over my circuit and tell me specifically what I may need to change or modify to get this issue behind me?
Thank you in advance
Can anyone help me by looking over my circuit and tell me specifically what I may need to change or modify to get this issue behind me?
Thank you in advance
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