The Sonic Titan creates amp-like distortion through the use of a JFET preamp stage, followed by LM386 power amp stage. The JFET stage creates the clipping and the LM386 amplifies the signal generated by the JFET.
Original units use a 2N3819 JFET with DGS pinout, so I've also included an layout for DSG JFETs like the J201, 2N5457, etc.
this insane thing is verified, crunch madness and even some sweat lead tones, but lots of gain !
ReplyDeletehi can i modify this pcb to have more gain?
ReplyDeleteI don't know if it really needs more gain, as it should have a ton on tap. But try using an LM386-N4 and run the circuit at 18v. You have to have the N4, as other versions of the 386 aren't rated at 18v. That might give you more headroom and open it up a little more.
DeleteAny chance of you doing an etch-able PCB layout for the D*A*M Ezekiel? That would be amazing!
ReplyDeleteI built this one. Another awesome layout! These D*A*M effects are so great. Right now I have an LM386-N3 in there, running it at 9v. I'll have to give the N4 a try at 18v. If it sounds this good at 9v, I'm sure it'll be even better-sounding at 18v.
ReplyDeleteHere are some photo of my build using the PCB layout:
Deletehttp://aishaloe.tumblr.com/post/141668368553/a-clone-of-the-digital-audio-manifestations-sonic
Printing!!!
ReplyDeleteAnything with Jfets, I'm into.
Thanks!
Finished today!
ReplyDeleteIt's a monster distortion!
Very loud, used LM386-3 and tried LM386-4.
Which is the recomended voltage to Jfet drain? 4.5v from 9?
Thanks David!
Probably? Good place to start anyway. But if it's already working, I wouldn't worry about it too much.
DeleteYou're right...!
DeleteBTW: which is the deal with the "modded tone stack" that is in the net?
I think it's just a few value changes? I haven't seen a schematic of the actual mod.
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