Hagiwo Sampler Drum

Sampler Drums PCB

This is a second version of a PCB for this module , the first version i made was closer to the original Hagiwo module ,while here using a summing circuit both Pitch and Bank Select have active mixing of Manual  Control and CV ,to keep things simple i left Select Sample as passive mixed input , now using only 3 x Analog inputs of the ESP32C3 protected with 1N60P . 
 

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

......ooOOOOOOOooo

 

Gyrator Bandpass Filters 

Colorupter ,Joystick

 

Colorupter ,Joystick 

ZVEX FUZZ FACTORY

 

OD

'64 Vox Tone by Fred Briggs

 

Siemens Equalizers

SIAM (Siemens Insprired Audio Module) 

ARP Quadra phaser (J. Haible)

 

sadly i could not get this one to work , i spent lot of time tracing the bad print layout from Jurgen Haible