Categories
Synthesizers Technical

Bell Labs’ Electro-Mechanical ‘Speech Synthesizer’ circa 1951

**update 07.09.21 – audio clip added! see below! you can now HEAR this monstrosity!**

Download a 4PP article (+advert) from the June 1951 RADIO ELECTRONICS on the subject of a novel (+fairly creepy) electro-mechanical speech-synthesizer designed by Bell Labs.

This has got to be one of the wildest electro-mechanical synths every created. I wonder what New Jersey basement it ended up in. I’m preeeeetty sure that this abomination provided the historical-basis for the device that Tony Shaloub’s character was developing in the first season of The Marvelous Mrs. Maisel. Anyhow. It’s weird and far-out and I think you will enjoy reading about it.

T.F. provided us with this audio clip so that you can hear this device in action. it’s pretty remarkable TBH…

Categories
Custom Fabrication Technical

Bogen DB20 Equalizer Circuit circa 1953

From the October 1953 edition of RADIO ELECTRONICS comes this report on an exceptionally powerful EQ circuit as-found in the then-new Bogen DB20 amplifier. The circuit uses no special parts and promises extremely wide-range control. R11 is odd, i’m not sure why that is present. I’m thinking that this might make a good EQ circuit for the Berlinetta DJ console…