From Collins Radio 1974 catalog #74: A round-up of broadcast compressors from Collins and CBS. Models covered: Collins 26U-3 limiter, 26J-3 compression amplifier, CBS 4100, 4450A. and 4110, 4000A limiters; CBS 4500 dynamic presence equalizer; and CBS 710 ‘automatic loudness controller,’ which I imagine is some sort of LFKS-type limiter?
Also – a bonus – from the same era – second-hand limiter/pre-amp price list from the same era. RCA BA2Cs for $20? Yes I will take 30 please. How about a General Electric BA-5 for $75?
Big scans so… follow the link for the info…
One reply on “Broadcast Compressors etc. Circa 1974”
Wow – item AA for $2200. Totally upside down from today.
If I recall correctly those Collins 26U-3 and 26J-3 are based on the 741 op amp, and compression is simple manipulation of the feedback path around the 741. I’ve never seen either one show up for sale….not that I would look either.