Siemens Equalizers

SIAM (Siemens Insprired Audio Module) 

fiction

 

Variations and Red Leaf

 

it's complicated

 

Mixer Project

Here's a little presentation of my latest project while i wait for the parts forever .I could write this same time next week and i'd still be waiting. This is not a synthesizer project ,but close , maybe somewhat it is . The panel and the enclosure is complete for what i call the Mixer .So this Mixer is intended to be used as an instrument for feedback related music . It's still modular and i added few other circuits to use in the feedback path . First of all it's two mixers in one ,it is just 2 x Buchla 106 but with a twist . I found a EQ inspired by Siemens called SIAM (Siemens Inspired Audio Module) so 4 of the Buchla 106 channels have that included , the other 2 have Buchla 194 on their inputs and all of them with a quiet proper Mute . Separate from that are 2 Aux channels each with control voltage input ,one for each group ,along with that there are 2 x AliExpress DSP Effects ..as you can notice the layout has 4 Groups and 2 Processing panels ,also included are Serge High Gain Amp ,Buchla Preamp and Envelope Follower ,CGS Grinder and something else ,a filter bank from Electronotes that is intended to be triggered with high feedback so it would sound like a Bell ,Bernie talks about it making interesting machine sounds .Wide range Dome Filter is included for experimentation with polyphase oscillators  .In the end of course this Mixer is meant to have a Joystick to pan/fade between 4 Groups . The third and the fourth group don't have mute switches ,instead ..the third group channels can be set with a switch to be part of Group 3 or Group 1 ,2 and so on . The fourth group has the same inputs as the second group but with it's own Volume controls . Optical Compressor and Limiter Saturator are included in this project and only one Sound Generator and that is MFOS Noise Cornocupia .I still have a bunch of PCB's leftover so i might build another Synthesizer but now i really can't wait to play this .This would cost me more then a proper Soundcraft Mixer .I mean to combine it with another little panel containing a Freq Shifter ,Filter Bank and two MOTM Yamaha GX Filters.

Panel for the Mixer includes two Monitors for the two 106 Buchla Mixers

Bellow are the PCB's for 6 channles of Mute and one of the SIAM Siemens inspired equalizers

Mute

the Siam EQ

The enclosure is custom made wooden enclosure with 8cm depth ,panel is black and cream color ,jacks used are standard 6.3mm except for the cv inputs in the Send/Return channel

Bellow is the Buchla 106 PCB

Feedback is Topic in the whole set up and all the modules are related to it , even Ian Fritz's 6 Phase VCO is an oscillator that is based on feedback , the CGS Grinder uses feedback and the even the larger Filter Bank from Osamu Hoshuyama has it's own non-linear feedback path .Idea was to see how far can you can go with this theme musically while building yourself , i did not wanted a matrix mixer for some reason and this is the result i got so far.

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Synthesizer Secrets

 https://synthesizerunderconstruction.blogspot.com

I made a new Blog Page ,is this end of life for this one . Over the years i made more then few PCB layouts ,and many of them were built ,tested ,modified ,so it kind of itches to place them in one directory ,like a schematics vault ,or a modular synthesizer ,so i found a layout that is working good for this purpose ,this documentation is free to download along with gerber files . Music and pretty pictures are not hosted here but i hope the list of modules will grow as i need to revisit some of the earlier layouts i made . Most people will just go and buy the kit and this is if you think you might save a few bucks . Here's the link :