Anybody interested in a vintage Adcom Subwoofer?

Adcom GFW 1v passive subwoofer

made in 1979-1982 ?

I got one that used to belong to Skyline Studios in Topanga Canyon, California.

seems to be somewhat rare, can't find too much information online.

Just had it reconditioned by a professional speaker repair shop in Woodland Hills and it thumps/sounds great!

tell me your thoughts.