Ah, just found this:
What are you using to get the deep tone on “Carnavoyuer”?
The song had no groove when I first got it. Josh had this vocal idea and I was like, Man, that's a beautiful song, we've got to do it. My tone came from two pedals, which are the Way Huge Conquistador before a MXR Bass Envelope Filter. I had that set up at home and I was messing around with it, and it's so cool. There's something about the pedals in that order that worked well. And it was the Yamaha bass along with those pedals getting that sound.
https://bassmagazine.com/artists/michael-shuman-king-of-queens