Tuesday, November 22, 2016

Tri interesting circuits for hi-fi or post-production ,or simply experimentation with synthesized sounds ,circuits are from Bulgarian magazin : Radio ,Televizija  Elektronika 1975 ,i read somewhere one can use NTE 909 as equivalent


 presence filter ,tone controls and 4 band eq




Friday, November 11, 2016

Digital Quantisizer  from Elektor Magazine October 1983



 

 

 

Sunday, October 30, 2016





















too much fm in the buchla oscillator one ,changed the attenuator from 50K to 200K for more reasonable detune ,on soundcloud : https://soundcloud.com/r25990127/sound-71

Thursday, October 13, 2016

Thursday, October 6, 2016

Serge Gamalan VCO , tested and working , IC is LM3900 ,updated layout to better fit the resistors and the second trimmer - here


Thursday, July 21, 2016

earlier builds

a little gallery of the synths i've built
 








 
 

 
















this panel is next ,the case is Modcan style ,using banana jacks as my earlier panel ,ring mods and quantized random are ready ,panel printed ,psu ready and good mood, modules yet to be inside for more then noise :
    Quadrature Zero VCO
    Yamaha GX VCF ( or Korg MS20 VCF)
    Buchla 291 VCF (single )
    Buchla 111 Ring Mod. (Dual to use for Freq Shifting)
    Dome Filter
    Crossfader Dual
    Extended ADSR Serge ( Dual )
    Fixed Filter Bank ( 18 Bands )
    Master Clock Divider CGS
    Buchla SOU (only Quantized Random section )
    Attenuverters x 3
    Analog Switch Matrix - Roland System 700
    Hip Bass Drum - C. Anderton








Snare Drum Roland 808
Rimshot Roland 606
Electro-Harmonix Sonic Boom
Envelope Follower/Preamp Buchla Music Easel
Noise Gate J.Haible
Experimental Hardware Neurons x 4 - Wiard




Wednesday, June 15, 2016

something played live in audiomulch in year 2008


Tuesday, April 26, 2016

Buchla 194 fixed bandpass filter according this this schematic , PCB layout is not tested yet


Saturday, April 9, 2016

Yamaha GX VCF with BCM847 and BCM857 transistors as raplacement for the matched transistor chips found in schematic shared by MOTM , the pcb is 100x100mm untested , SSM is written only for orientation it's BCM857
(edit: i couldn't get this pcb working ,it was sort of working but something was wrong with it , there are few errors ,i made new layouts for both versions of this filter )

Sunday, March 20, 2016

PCB Layout for VCA from Nonlinear circuits and Xmix from EFM's Wildcat on a single PCB 70 x 70 mm ,tested and working ,schematics is here


Thursday, February 25, 2016

Simple Theremin ,article by Jake Rothman in 1995 September issue of Practical Elecronics


 

 


Monday, January 4, 2016




Filtellator Filter/Oscillatror - prototype by Aaron Cram at waybackmachine