Fonik SSM2044 VCF PCB/Panel

Timo Rozendal's Eurorack take on Fonitronik's SSM-2044 VCF.

This is a PCB/Panel set in the Eurorack format.

Availability: In stock




From Fonitronik:

This is a voltage-controlled low-pass filter with 24dB/octave slope. It is made with the legendary SSM filter chip SSM2044. This chip was used e.g. in these synthesizers: Korg Polysix, Korg Mono/Poly, Fairlight II, PPG Wave 2.2 und 2.3, Emu SP-1200, Siel DK600, Siel Opera 6.

The special feature of the 4 pole low pass SSM2044 is the patented so-called "true open loop design that delivers a characteristic fat sound not available from other devices" (extract from SSM2044 data sheet).

The module features voltage controlled resonance.

From Timo Rozendal:

The circuit is the same as the rev 3 of the fonitronik circuit (with the extended cutoff option). Matthias kindly gave me permission to offer this set to you all, he also send me this remark fyi: 
"just be aware, that the quality of the SSM2044 ICs is not the best. they had quite a bit of variance back then. that's the reason some manufacturers changed to curtis in the 80ies. the issue is that not all SSM2044 will have the same range. "

Specs & Downloads

Specs & Downloads

Manufacturer Timo Rozendal
HP 8
Depth 43mm
+12V 10mA
-12V 10mA
+5V No
Additional Resources Build Guide & BOM


Customer Reviews (2)

Absolutely love this filter!Review by Gregor
I wanted this filter to have that vintage flavor so I scored an original 2044 IC from Ebay. I paid $15 for it and it was so worth it to me. This filter absolutely rocks and has character that it passed my expectations by a mile. I like to use Manhattans CVP to crank up the resonance and it just makes it even better. The overdrive of the input is a nice treat as well. The versatility of the musicality is tremendous and can really do many genres well. I highly recommend this and also try and get a deal on Ebay for the original IC. (Posted on 7/3/2018)
Problem with SSI2144Review by Norman
I built this using the new SSI2144 clone chip and unfortunately resonance is out of control and can't be calibrated. I have reached out to Timo and he is experiencing the same issue. He is working on a fix to the circuit. The resonance can be control by injecting negative voltage into the resonance CV. Anywhere between -10V and -5V. (Posted on 8/31/2017)

Write Your Own Review

You're reviewing: Fonik SSM2044 VCF PCB/Panel



Use spaces to separate tags. Use single quotes (') for phrases.

You may also be interested in the following product(s)

Timo Rozendal / Fonik SSM2044 VCF

Timo Rozendal / Fonik SSM2044 VCF

From: $2.75

To: $94.68