Radical Frequencies SH-1 Replica

Radical Frequencies SH VCF It is a complete discrete through hole replica of the the original mono synth sh-1 filter from late 70s ! In detail it is a cascaded OTA low pass filter with four OTA-stages of the original vintage CA3080 ics with FET transistors as Buffers , it has 2 inputs with potentiometer , 1 cv input with potentiometer and 4 independent low pass outputs one for every ota stage : 6db , 12db , 18db and ofcourse 24db. The 6db and 12db outputs are in 180° phase , as result you can mix them together with 24db out in a mixer to make bandpass and hig pass combinations !
In order to achieve a clean sound the input level must not be over 70% to 80% but if you boost the input you take a wonderful saturation that if it's combined with a lot of resonance the result is magic especially from the 6db out ! Of course the 24 db out is perfect for rubber and punchy basses like the classic vintage Japanese synths


  • 15 mA +12V
  • 15 mA -12V
  • 0 mA 5V
  • 68 mm deep
  • Ø 5.00 (3 Votes) Average Rating

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$175 Price in €
10 HP Filter
submitted May 13th 2017, 16:33 by mattfwalters | last Change Mar 19th, 12:29 by ParanormalPatroler

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