vintage Sveriges Radio variable filter SR22720

Описание к видео vintage Sveriges Radio variable filter SR22720

Vintage Sveriges Radio SR22720 combined High Pass and/or Low Pass cutoff filter. Top knob is a channel selector. On the desks I've seen only one of these filters were present - but could be connected to any channel. Probably not that unlike the legendary King Tubby Big Knob. ;)

Inside are one very large multi-tap inductor, one capacitor board, and a Germanium transistor amplifier make up gain board.

Thanks to Jan Broms for the unit!

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