I managed to 'clean' the square wave, but after the hype of it working, only now I figured out it was just boosting the bass... I mean it makes sense, since it has three low pass filters with a cutoff frequency of 159 Hz. I mean, before the filters I get a fuzzy sound, so I think it's not bypassing it. Can someone tell me how's this happening?

btw the flip flop is powered by 9V and the first opamp is powered and biased with 9 V aswell, just used 10V because there isn't a 9V opamp in the simulator.

 

In the flip flop I only connected Vcc, Vss, and the connections made in the schematic. I didn't connect the rest to ground, could that have anything to do with it?

 

The 4013 is a CMOS circuit. You must NEVER leave unused inputs of CMOS circuits floating (unconnected), or you can get weird results.

 

The 4013 is a CMOS circuit. You must NEVER leave unused inputs of CMOS circuits floating (unconnected), or you can get weird results.

Yeah I think that was it, I used this schematic now, but after the filters I still get some squary noise, I mean if I play carefully I don't hear it as much (still bothers though), isn't there a way to filter it?

 

Btw should I connect everything else to ground aswell? Like Q1 and -Q1 (not being used, only Q2 and -Q2)?

 

Btw should I connect everything else to ground aswell? Like Q1 and -Q1 (not being used, only Q2 and -Q2)?

How would you like it if someone stuck a rag in your mouth? That is what you are doing if you ground Q1 and /Q1.
Never connect output pins to GND or Vcc, or Vss or Vdd.

 

Connecting an output to ground is a bit like plugging a shorting bar into a mains socket! Sparks will fly, or the magic smoke will escape.