flickr set by r_j_d_2.phila
(click for more)
Note one recently came up for auction captured here. It's actually test equipment and not a synth in the classic sense. Details from the flickr set:
"photos of a (somewhat rare?) early synthesizer. thought this was an interesting unit, so i figured id take some pics and share. dave from the audities foundation has pegged this as a telephone testing device. there is no date of manufacture, and i couldnt find any documentation on this-my guess is 1969-75, based on the construct and fonts, but who knows? SN 772.
it can both generate tones, as well as process or modulate any incoming signal(great fun on drums). the harmonic distortion unit on the top half is a partly-separate unit; the 2nd and 3rd harmonic distortion can only be accessed through the upper level of pin inputs."
This one in via Reid on Facebook
http://books.google.com/books?id=Jjkd74jY47oC&lpg=PA158&ots=FJPOuK5w6u&dq=Local%20Loop%20Simulation%20and%20Simulators%20bradley%202a&pg=PA157#v=onepage&q=Local%20Loop%20Simulation%20and%20Simulators%20bradley%202a&f=false
ReplyDelete"used to test four-wire voice band modems at the design stage"