ecm8000 clone

## Behringer ECM8000 Clone ## Release candidate * works nicely with 2sc945 + 2EA 2sa970 * The main screenshot is slightly modified Shin's version ["usable version/source grounding/mod #2"](https://ameblo.jp/shin-aiai/image-11230219227-12977623171.html) (v0.4b schematic) * only C1 was removed (all resisters are not modified)   * the Zenor diode was replaced by a 1.5K resistor.   * The RA registor is not used. ## Changes * 22/3/3 add the RA resistor for Linkwitz mod (source follower) * 22/5/25 fixed layout size and rework to fit ECM8000 pcb. ## References * [WM-61A Linkwitz mod](https://www.linkwitzlab.com/sys_test.htm#Mic) * [https://www.directap.com/Microphones](https://www.directap.com/Microphones) * [http://diy-fever.com/misc/wm-61a-microphone/](http://diy-fever.com/misc/wm-61a-microphone/) * [https://homerecording.com/bbs/threads/ecm8000-mods.111051/](https://homerecording.com/bbs/threads/ecm8000-mods.111051/) ## See also [https://ameblo.jp/shin-aiai/entry-11228407797.html](https://ameblo.jp/shin-aiai/entry-11228407797.html)