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Electro Harmonix Sonic Boomer

 I found this schematic and layout many years ago and i even made PCB for this but never built it , so when i tried to find again the layout and schematic on line there was none , or just hard to find so i decided to share it here . This is not my layout ,and i have not built it , but reading the comments elsewhere this is a very nice Kick drum .

BOM : 

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| Electro-Harmonix Sonic Boomer |

|        Component list         |

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Sorted by name

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R1 47

R2 10K

R3 3.3M

R4 3.3M

R5 390K

R6 43K

R7 220k

R8 9.1k ???

R9 1M

R10 68k

R11 47k

R12 47k

R13 1M

R14 100k

R15 10k

R16 10k

C1 0.001

C2 100 EL

C3 10 EL

C4 0.0039

C5 1 EL

C6 4.7 EL

C7 0.0047

C8 0.0047

C9 4.7 EL

C10 0.0047

C11 0.0047

C12 1 EL

P1 1M log

P2 1M lin

P3 1M log dual gang

D1 1N4148

IC1 TL064

SW1 DPDT

X1 Electret microphone

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 Few more layouts are available at https://synthesizerunderconstruction.blogspot.com , i updated the Buchal 106 PCB layout with dual layer smaller PCB  .There is now PCB layout for 3 Band Moog Parametric Equalizer  . As i am building a new DIY mixer i decided to include few DIYRE Color modules like Distortastudio  and FA38 from Trident Consoles . There is a new layout for Vintage Serge VCO , and  updated the layouts for Buchla 194  ,and the MOTM Yamaha GX VCF for which i finally got the PCBs.

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Chiruru

Moog Parametric EQ

 

Many years ago i built the ACX Moog Parametric EQ and it was working fine , so i just saw now the original Moog 3 Band Parametric EQ .This is a striped down version without the switch .

This Moog Parametric Equalizer uses somewhat unusual potentiometers-dual 50k/500R