What's this TILT eq? anyone know how it works?

[emrr]

There are late 1930's tilt EQ's made by the Hollywood Photophone division of RCA for 'rerecording compensation' in film work. The 1950 RCA catalog covers the industrial install line a little bit, and several of those amps also have tilt circuits built in. Not sure when the first consumer tilt circuit would date.

 

[Michael Tibes]

I believe Klangfilm (german cinema tube stuff) had that as well in one of their EQs. There is a french site around, which has loads of documentation about that company, perhaps also about this eq. I might have the schematics somewhere as well, but have not time to search right now :sad:

Michael