I thought I'd put this up a while ago but apparently I didn't. True story.

A friend asked me to pad the XLR output on his and it would have been rude not to trace it out. This is the original one, and an early one at that (lots of mods/hacks on the PCB to make it functional). The only bit I'm not 100% on is the output buffer, it used a 4066 for switching in a way I haven't seen before and I only had it for an evening so I had to give it back. The caps were SMT, measured in circuit and removed...

I think we all pretty much know what this is, but as I have one sitting here, I thought I'd take a few shots.

Outside.JPG
Outside is actually a really nice gold finish. Not at all cream, the way it looks on the website
Switch.JPG
I've seen this somewhere before... Not great soldering on the wires. I might have to beef that up.
Inside1.JPG
Underside Shot
Inside2.JPG

All of the pots that control EQ are 100Kb. I'll get some better pictures up once I get home.

Also, here is the shot from...

1.JPG 2.JPG 3.JPG 4.JPG 5.JPG 6.JPG 7.JPG BLG_PIC_L.png BLG_PIC.png

for you bass lovers out there.

Diamond Bass Comp Values.jpg

cheers,
lohstah

Long story short, I ended up testing and measuring a good part of all odd diodes I have had accumulated over the decades of tinkering.
Some are modern, widely available, some are more rare and not produced anymore, germanium, silicon, including Schottky, silicon carbide, Zener, LEDs, IR, etc.
Here are the graphs, showing the forward voltage drop for a given current (I-V curve) for different types of diodes. Hope this is helpful to anyone. All were measured using a Peak Atlas DCA75 Pro.

The...