Wow, that's amazing. I got mine in (I think) 2001 and the paper subwoofer rotted away a long time ago. Usually I prefer to repair/donate but I had a surplus of gear and clutter and I had was in a very stressed out time in my life so I wound up simply tossing it, unfortunately.
Really wonderful sounding speakers relative to anything I had heard at the time. Much respect for you to repairing it rather than tossing it.
I'm wondering if they changed the subwoofer design at some point, switched away from a paper woofer?