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Muffwiggler link: http://www.muffwiggler.com/forum/viewtopic.php?t=121124&postdays=0&postorder=desc&start=80

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pcb (control and main pcb from steffcorp

1x tempco 1k871k87  (i used a 3500ppm KRL, check  thonk.co.uk and synthcube.com  )

2x 1n5817

1x lm301 dip8LM301AN or LM301AH

4x 3k32 (3k3 works fine too)

1x 23k223k2  (Tip: check cermet 22k for tolerances

1x 196k

2x 250R trimpot multiturn or 500R trimmer

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Panel 4072 panel from Bridechamber.com, you can add the finetune on the pcb /the 4072 bridechamber panel dont have to leave the fine tune pot

a finetune pot

2x 100k lin bourns pot (frequenncy, resonance)  - prefered due to handling

2x 100k log Bourns pot (input1, input2) usage of alpha/alps are fine too

2x 100k  pot for CV

Building:

all 2N3904/2N3906 was matched by me within 1mV

a pair 2N5459 was matched too

resistors, caps, sockets, transistors was stuffed by me, pcb washed, all trimmer and ics added later,

for MOTM conversion: make sure you connect both pcb in correct way !!

wiring of jacks:   make sure you connect for CV1-CV2-v/oct  the jackswitch to the pcb.

i used shielded cables (RG174) for input/output jack

calibration: see build document and double check it , in my case was the gain and offset related to the initfrequency at beginning.

          Image RemovedV/oct calibration result was not perfect but better as some other filters i have build in last years.

Description

copy from https://steffcorp.se/product/2612/

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