The “Nite” or “Air” EQ project is a clone of the discontinued Nightpro EQ3D equalizer. It’s standout features are a dedicated “sub” shelf and an exceptionally high, 40kHZ “air” filter. PCBs have long since run out, so it’s now a self-etch project.
Notable Features:
- Has the following fixed, band filters:
- Sub shelf
- 40Hz
- 160Hz
- 650Hz
- 2.5kHz
- And the following settings for the adjustable shelving filter:
- 2.5k
- 5k
- 10k
- 20k
- 40k (air)
- Runs on +/-18vdc power rails
http://wiki.diyrecordingequipment.com/projects/nite-eq3d-diy-equalizer/
Check it out in the EQUALIZERS PLAYER