Messing about in After Effects!
Single Benjolin drone with Serge Resonant EQ in a feedback loop of one of the Benjolin’s oscillators back to the ext in along with my standalone modulated fuzz delay.
First patch after tweaking the output level of my two benjolin’s. I actually built them quite a while ago but have had a lot of other projects on the go and have only just got around to sorting them.
Rob Hordijk’s original design was as a standalone units with a line level output. The fix was really simple, I just changed the gain of the op-amp feeding the filter. One little resistor and it only took me 6 months to get round to it!!!
Finally got round to finishing this filter and I’m very glad I have. It sounds fantastic.
I got the PCB quite a while ago when I swapped some of my boards with another user on Muffwigglers. Initially it didn’t work and it took me a little while to find the error on the PCB which was easily fixed with a jumper wire. I also decided to try it with my replacement for the LM3046 which is discontinued in a through hole package. My replacement uses 3 pairs of SMD matched transistors. I tested it with a real LM3046 and my replacement. There’s more gain in the LM3046 and the signal is a bit hotter but it still sounds pretty much the same with my replacement. As my stocks of LM3046’s are pretty low I decided to use the replacement. I’ve put a link to the project at the end of this post.
In the video I have one VCO running into the audio input and one into the cutoff frequency CV input. Additional tones are produced by increasing the resonance.
Link to my LM3046 replacement: