Paid gig.. (hi/lo pass filters for audio) (fine tuning quality help)

Here is a thread where I was trying to use LTSpice to learn more about the hi-lo filter stuff..

It turned into more questions about how to use LTSpice, more than getting help with my filters! lol

I was basically frustrated and gave up trying to get the right combination.

But this thread has more info and schematics..etc..etc

https://forum.arduino.cc/index.php?topic=373870.0

if there is any missing info.. ask.

I have a set-up I can get going to test values again if needed.

thanks