The OCTET was installed in Studio A at TEN Channel 10 in North Ryde (Sydney) in the early 80's and replaced a System CD desk. It drove about 300 JTM dimmers.
Studio A was the Variety Studio.
Studio B was the Drama Studio and had a MMS
Studio C was the News Studio and had a Tempus M24
Studio D was the Morning TV studio and had a Duet
These studios were closed some years ago and I have not been able to find what happened to the Octet. All productions for the TEN network were transferred to Melbourne - their new complex in Sydney has only a small news studio.