Oh, man, I hate to be the pain in the butt…
But it looks like you have some severe lossy compression in the lineage here. It shouldn’t look like this from good analog recording. Or you are somehow recording the Dolby Surround track instead Analog mono, idk…
It should go all the way up to 22kHz.
Oh damn, thanks for pointing that out. I’ll try to re-rip the audio soon and pay attention to that. Sorry about that