View source for CGS switched matrix

This is just a quick, photographic guide for the one or two people out there that actually have the '''CGS122 switched matrix''' or '''CGS123 switched matrix Eurorack''' boards.

== A little on how it works ==
[[File:cgs_schem_cgs123_mixer.gif|thumb|center|779px|Partial schematic. The rest is simply more of the same.]]

== Construction ==
[[File:cgs_photo_cgs122_matrix3.jpg|thumb|center|900px|CGS123 Circuitry PCB.]]
[[File:cgs_photo_cgs123_matrix3.jpg|thumb|center|900px|Rear of CGS123 Circuitry PCB.]]
[[File:cgs_photo_cgs122_matrix2.jpg|thumb|center|900px|Switch PCB. Note that only half of the resistor positions are used. 1/8 W resistors are required. All resistors on this board are 100k 1%.]]
[[File:cgs_photo_cgs122_matrix4.jpg|thumb|center|900px|Switch PCB. Note that only half of the resistor positions are used. 1/8 W resistors are required. The second resistor position is for a second matrix on the same board, allowing for stereo switching. The CGS123 interface board is only mono.]]
[[File:cgs_photo_cgs122_matrix.jpg|thumb|center|900px|Rear of switch PCB.]]

== CC-BY-NC ==
Readers are permitted to construct these circuits for their own personal use only. Ken Stone retains all rights to his work.

== See also ==
* [[CatGirl_Synth#The_CGS_modules|The CGS modules]]
* [[CGS parts FAQ]]

== References ==
* ''[https://web.archive.org/web/20180209234737f/http://www.CGS.synth.net:80/modules/CGS122_matrix.html Matrix switch array for music synthesizers.]'' (archived) by Ken Stone, 2013, with permission of the author

== External links ==
* [http://groups.yahoo.com/group/CGS_synth CGS Synth discussion group], for discussion of locating parts, modifications and corrections etc.

[[Category:CGS CV processors]]