CSI/Speco SS-1 Audio Generator

via these auctions via this electro-music.com thread

"Solid State Sine/Square Wave Generator. It offers a frequency response of 20 to 200 kHz square and 20 to 2 MHz sine. It features a 0, - 20 dB, and - 40 dB output attenuation."

via appliancide

see the labels below for other devices from CSI and WaveTek.

CSI Analog Computer

images via this auction. via z.
Note these are not modular synthesizers but analog computers. If anyone out there has integrated Analog Computers with their modular gear, I'd be curious to hear about your experiences. Feel free to post them in the comments or send email.





Some details on these pulled from the auctions:
"CSI Model 6F13 Analog Computer. Serial number: 75
This computer contains the following 6 modules plus the main controller:

* 1 A/D Converter 8-bit
* 2 Summer Integrators
* 1 Comparator
* 1 Function Generator
* 1 Multiplier

CSI Model 6F13 Analog Computer. Serial number: 38
This is a very rare analog computer that was built by Compumedic Sciences Incorporated. It was originally owned originally by the NTDC, (Naval Training Device Center) of Orlando, Florida and put into service in 1970. There isn't much information about this machine on the web and what information is out there is from people who purchased one of these from me a few years ago. You can see one of them here on the Old Computer Museum website.

Please note that I do not have a manual or any documentation for this machine! I also do not have any of the mini-banana patch cables that are needed to operate it. The plugs can be readily purchased from most electronics suppliers such as Mouser or Digi-Key.

The reason I had this and the other computers like it was that they can be used in experimental electronic music as they are electrically compatible with any modular system. Many analog computers such as the Heathkits have 100V signals! The CSI computer uses +/-15V signals which most modular systems can handle. Also, unlike most other analog computers, this one comes with a very good set of modules, some rather unique to this one, like the digital converters.

This computer contains the following 10 modules plus the main controller:
* 1 A/D Converter 8-bit
* 2 D/A Converter 8-bit
* 2 Summer Integrators
* 1 Summers
* 1 Differential Amplifier
* 1 Comparator
* 1 Function Generator
* 1 Multiplier"

Update via Tommy (also check out the comments of this post for more):
"this is a link to just the first page (ugh) of an article which appeared in vol 22 issue 2 of the computer music journal.

Its an amazing publication, most of it goes right over my head...theres some far out academic shit in there. Personally I'd rather just switch on a device, twiddle some knobs and see what happens "