Here is a pretty cool overdrive with qquite a poweful eq section. However, it requires som fiddling to make your own custom 10kC/100kC dual gang pots for the EQ controls. HERE is a small tutorial at page 3. Second, the DPDT on/on/on switch type isn't specified in the info sheet I have, only "the coomon type" which leads me to believe it is a "Type 2" switch.
A "bottom of the well" HM2 variant. Differs enough to warrant its own layout, though...
A pretty cool lookin¨take on the ol¨Big Muff. The first and the last stage is replaced by a dual op amp, a diode lift switch at the the first clipping stage, a Gain control that biases both of the clipping stages and for the tonestack, a James control network is used for invidual bass and treble controls. .
Schematic is avaiable HERE.
I've been trekking in Lapland (in northenmost Sweden) for the last couple of weeks hence the low activity around here. There is lots of messages in my Blogspot folder, I'll try to walk it thtough it the next coming days. Don't hesitate to hit me up if there is a layout that needs to be tagged or corrected.
Tjätka Valley, Lapland.
For now, only the booster/overdrive section, might add a separate board for the switchcable bypass buffer later on... 2N5952s is getting really scarce but 2N5457s or 2N5458s is usually a good sub. Just mind the orientation!
Schematic is avaiable HERE.
