Nyan 1073 EQ =^x^= (formerly Cheap's73 / Poor Man's 1073)

[peterc]

Agreed!

 

[vizcities]

What's the word on this one? Any updates?

 

[Ricardus]

What's the word on this one? Any updates?

Oh darn, I was hoping it was an official update.

 

[MidnightArrakis]

Sounds great! You can find the kicad files on my github: GitHub - ravettel/Nyan-1073-EQ: Not yet another 1073 EQ
But I'm planning to rework some parts of the circuit in the coming weeks. The implementation of the mid band gyrator has several flaws and is also technically incorrect. I've ordered a third party 200mH Neve inductor so that I can do a bit more research on a better implementation.

Have you finalized all of your NYAN-1073-EQ circuit designs, schematic updates, BOM's, etc.?

Does your earlier link now contain all new and updated KiCAD files and all?

It would be interesting to know this. THANKS!!!

/

 

[krabbencutter]

I tried building a protoype a while ago, which turned out to be a total disaster. So right now I can't say that the latest iteration of the circuit will work beyond the simulation.

 

[krabbencutter]

I've built a single band of the peaking filter again and now I remembered what the issue was. I've attached a video where you can see that something weird is going on around 50 Hz. I'm using NE5532 Opamps and a linear +/-12V Power supply. I have 10uF bypass caps on both supply rails as well as 100nF on all Opamp power pins. If anyone has an idea what might be going on here, I'll greatly appreciate it.