@devinplombier -- Nice. I love old school Infinity speakers. I'm not certain, but I believe those Infinity utilized the Watkins Dual-Drive Woofer. I grew up in Kingsport, Tennessee, and was frequently found at Watkins Stereo Center, an Audio store founded by Bill Watkins, Sr. Watkins developed and patented the unique Dual-Drive Woofer that he later sold to Infinity. I believe they were in the RS-II.
https://www.theabsolutesound.com/articles/william-h-bill-watkins-a-true-american-audio-innovator/