Big Red Supers, the Electronic Crossover, and HF "Equaliser" Units - Can You Help Id?

Last Friday I had what appear to be "Big Red Super" components in 20 cu ft cabinets delivered to the house. These came out of a local recording studio. These were set up for tri-amping was included the electronic crossover, a pair of "High Frequency Equaliser Networks," and the speaker cables.

It would be nice to know who made the electronic crossover and the Networks. Is there anyone here with experience with these pieces?

Thanks

http://www.audioheritage.org/photopost/data//500/medium/Big_Reds1.jpg
http://www.audioheritage.org/photopost/data//500/medium/Big_Reds_2.jpg
http://www.audioheritage.org/photopost/data//500/medium/Big_Reds_3.jpg
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toddalin12-12-2018 10:52pm

scmarkley Details Discussions Posts This discussion Message User 2 posts 03-01-2021 at 11:55pm Copy Comment URL Report Comment Edit Delete Hello, I'm coming in on this very late in the game but, I used to work at Audiotechniques from 1976-1978 and did installs and repairs of the MCI consoles and tape recorders. When I was there I bought a pair of the Big Reds and then later bought a pair of Altec 416-8Bs to effectively build Super Reds. There was no Audiomarketing at the time so I am not sure what they did with them, but I do know that when we built Super Reds they used the Mastering Lab crossovers, and believe it or not, the extra woofer was a Radio Shack 15" woofer. Which is why I went with the Altec 416s. I sold my whole system to my brother when I decided to build a home theater in 2001 when HDTV came out, so I don't have any of this stuff anymore.