This thing is said to emulate a 69 Marshall Plexi 50W on 10... Hmmm, OK - Here's the scheme :
It looks like this one was drawn by the great matsumin, one of the legendary Japanese DIY bloggers! Check it out, it's a fairly simple build!
Here is the original PDF Manual: Link!
Here's a decent demo of Hao Rust Driver in action:
Once again. A big Thanks to the Freestompboxes guys for getting this info together and to the people who created it in the first place!
Expect more schemes soon - or just join freestompboxes for a sneak peak!
Wow, thanks, I'm going to try this one. But what I miss in the schematic is the 3-position equaliser switch (Normal, bright, warm) Anyone knows how this looks?
ReplyDeletethanks eljee
insert 3 different caps in parallel with the diodes and switch them:
ReplyDeletetry 22,47 or 10 nf
What does the 4 Pin in the Lower Corner mean?
ReplyDeleteReally nice thing :D
The bit that says 4 Pin is a reference to the 4th pin of the IC going to earth.
ReplyDeleteBTW: This is a very similar design to the Op amp Muff fuzz schematic on fuzz central.
I did a PCB print layout based on this schematic if there are someone interested... it's posted here:
ReplyDeletehttp://dirtytoyspedals.blogspot.com/2011/09/hao-rust-driver.html
Thank you for providing the schematic
"insert 3 different caps in parallel with the diodes and switch them:try 22,47 or 10 nf"
ReplyDeleteDid you mean 2,2 4,7 or 1 nF? (0,001uF; 0,0022uF; 0,0047uF)