Tascam didn't sell many of them. There may not be anyone around at Tascam that remembers it first hand, but they can still get a copy of the manuals.
I sold Tascam back then. That was back when analog was still strong and the new digital open-reel multitracks were coming of age.
Check the archives of EQ magazine. There was a feature of a couple or R&B guys that had one in their project studio. I don't remember if they talked shop about the console, but you may be able to track them down and see if they are alive and have anything to say about the console.
Davedog...I had moved back to Tulsa from Hollyweird in 89. It was a hard call. Apartment for $1800 month, or 2,800 sq ft house for $700. I worked for a large A/V contractor during the day, and freelanced by night. About two years of that was all I could stand and then I got back out on the road.
I worked for some companies that you would probably know out in LA.
There was one other large console from Tascam, that was their last large format board. Post houses bought them mostly. It was a M5000 I believe. They were not really designed for music production like the 700, but they looked REALLY cool. They were noisy and the EQ was less than stellar. I think that if a small studio wanted a console for shock factor, for just eye candy, the M5000 would be at the top of the list. For ear candy, look anywhere else but Tascam. They are not a knock-your-socks-off console manufacturer.