Hi folks,
I had a pretty good day at the fleamarket and scored a Farfisa organ preamp for cheap. The model number is OS 42 SR. It's got a spring reverb unit and "Sferasound" Leslie imitation. It sounds really sweet on guitar. The second channel is broken, though. So schematics would be appreciated if anybody has 'em. Any other info would be welcome as well.
One thing that marvels me is that the outputs are labeled M and S. I first thought this must be mono and stereo or left and right channel. But it really looks like it is M/S encoded. At least the signal made more sense when I ran it through an M/S decoder. Hmm, strange...
I couldn't find any info on the thing. It is fairly large, about the size of an 19" enclosure of two rack units, but looks more like an amplifier top. Pretty strudy. It is all dicrete transistor. Early 70s would be my best guess...
I had a pretty good day at the fleamarket and scored a Farfisa organ preamp for cheap. The model number is OS 42 SR. It's got a spring reverb unit and "Sferasound" Leslie imitation. It sounds really sweet on guitar. The second channel is broken, though. So schematics would be appreciated if anybody has 'em. Any other info would be welcome as well.
One thing that marvels me is that the outputs are labeled M and S. I first thought this must be mono and stereo or left and right channel. But it really looks like it is M/S encoded. At least the signal made more sense when I ran it through an M/S decoder. Hmm, strange...
I couldn't find any info on the thing. It is fairly large, about the size of an 19" enclosure of two rack units, but looks more like an amplifier top. Pretty strudy. It is all dicrete transistor. Early 70s would be my best guess...
