Thought I'd give it a thread here too..
Here's something I threw together. It's called the Harmonic Fusion Engine and it's a marriage between two great effects with Harmonic in their name.. The Systech Harmonic Energizer and the Harmonic Jerkulator (By out pal Tim Escobedo). It also incorporates Jack Ormans SWTC. What I did was removing the gain stage from the energizer and use the free opamp as an input buffer. Also I Fixed the bandwith pot at max. Finally I blended in some of the clean signal into the jerkulator to keep some bottom end when the frequency is set high. I used 2N209 and 2N3404's for the jerkulator. The schematic misses two 220pF caps from B-to-C on both transistors for noise reduction. They are on the vero.
Schematic: https://dl.dropbox.com/u/1849818/hfe-fixed.png (https://dl.dropbox.com/u/1849818/hfe-fixed.png) (ignore the comment on the range pot.. it's fine)
Vero: https://dl.dropbox.com/u/1849818/hfe-verified.png (https://dl.dropbox.com/u/1849818/hfe-verified.png) VERFIED ;D
Soundclip: http://soundcloud.com/arrfx/harmonic-fusion-engine (http://soundcloud.com/arrfx/harmonic-fusion-engine)
Tight fit:
(https://dl.dropbox.com/u/1849818/IMAG0412.jpg)
If you lower the footswitch you can even squeeze in a battery.
BUILD IT!
bump!!
I likey.
You can sell them John if you make me one : : ;D ::)
Just wanted to say thanks for designing and sharing this one. I got it together today and absolutely love it!! Some really great fuzz wah type sounds in there. I used 2n5089 for the NPN, 1n270 diodes and removed the 22k to the volume (in the hope of giving it a bit more volume). Cheers!
Remove the diodes for volume.. Watch out though it's LOUD
hey ~Arph, the links have gone down. any chance you could please repost them? i've been planning on doing this for like years now and can't find the files i thought i'd downloaded!
thanks bro
Here you go:
https://www.dropbox.com/s/yizjjofwr3g6zjq/hfe-fixed.png?dl=1 (https://www.dropbox.com/s/yizjjofwr3g6zjq/hfe-fixed.png?dl=1)
https://www.dropbox.com/s/tzxnnhiokvqy67w/hfe-verified.png?dl=1 (https://www.dropbox.com/s/tzxnnhiokvqy67w/hfe-verified.png?dl=1)
awesome, thanks arnoud!!
hope to have one built up over the next few days ;)
Cool, I hope you like it. You can always tweak the jerkulator side to taste.