Scott Dorsey wrote:
philicorda wrote:
What was more common is a passive high/low pass. I have seen in pictures
of old studios a passive high/low pass filter, in a rack with two big
knobs on the front. I can't remember which companies made them, but I
think they date back to the 50's. I don't think it was Pultec, but rather
folk like Eckmiller, Neumann or Siemens.
Everybody made them. Pultec made them, Cinema Engineering made them,
White made them, studios made their one one-offs using surplus magnetics
and vertical sweep coils from TV sets. Most of them were at most second
order filters but of course you could chain them if you were insane.
And whip them if they misbehaved.
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