EFM VCF-6C EMS Diode Ladder Filter info???

[Audent]

I don't know where else to ask this...

I was recently given an unpopulated EMF VCF-6C PCB from a friend....I'd love to put it together, but I'm having a hard time finding a parts list. Most of the components are obvious from the schematic, but some of the capacitor types are a bit fuzzy as well as the trannys

can anyone help me out on this?

[machine.cuisine]

This is from an old print-out of the original EFM doc:

- Resistors -
1-3, 12 are 47k
3(?), 5, 18, 20 are 1k
6 is 2.2k
7, 9, 13, 19, 24 are 10k
8 is 470k
10, 14-17 are 100k
11 is 220 ohm
21, 22 are 220k
23 is 1M
All pots and trimmers are 50k

- Caps -
1, 2, 4-7 are 0.1uF
3, 9, 10 are 10uF/16V
8 is 220uF/16V

- IC/Transistors -
Q1, 2, 4 are 2N3904
Q3, 5 are 2N3906
U1 is a LM13600
The diode array calls for the expensive MAD1108 - although regular (preferably matched) 1N4148's or even LED's can be used.

I hope this helps. Also see http://www.modular.fonik.de/Page37.html and check the "forum" notes for mods, etc for this and other EFM modules.

[Audent]

Cool! Thank you!

[Tim Stinchcombe]

Hi Audent,
[First post to electro-music - well you have to start somewhere!]. No idea if you will still pick this up, but hopefully so, as the thread isn't that old - I forwarded the pdf of this filter to fonik a few days ago, and he has immediately put it up on his site, at the link given above.

Tim

[Audent]