I wanted to try and make my own Shotgun mic, so i started experimenting with electret capsules and preamp circuits. But no electronic project is concluded without a proper enclosure.
So in this project i'm building my own Mic Body, with an electret capsule and a phantom powered preamp.
If the quality of the end product is acceptable, i'm building another two or three, in longer versions to make them more directional.
My first try at making the preamp was this schematic, a classic push-pull configuration. But i notice that only works well at 12V phantom. With 24 and 48v phantom the noise floor become noticeably higher.