Hello msrecprod,
A lot of the early INXS stuff was recorded at a studio in Sydney called Rhinosaurous Studios which has long since been closed down. A lot of the equipment was purchased by members of the band when it closed down with some ending up in Gary Beers's former studio Mangrove Studios (
http://www.thegrovestudios.com/) on the Central Coast north of Sydney before he sold it to concentrate on the Rockstar TV show. I know some one who was working at Rhinosaurous Studios so give me some time and I'll see if I can get some more info for you.