It's oriented correctly, but you definitely absolutely 100% need to solder it! It may be a tight fit, but A) the chances of all 9 lugs making solid contact are very low, and likely the cause of your issues, and B) any amount of jostling could knock it loose, especially since gravity is pulling down ...

Mouser still has them (part number LM13700N/NOPB), they're not quite gone yet. To convert 2x CA3080 to LM13700 you need to know a bit more about the circuit and the application. If the LM13700's Darlington buffers are used, you'll need to wire those offboard since the CA3080 is only the OTA portion....

have you had the opportunity to compare your clone with an original? Nope, mine was thoroughly destroyed in the trace, but others have A/B'd and said it was spot on. But with 7 revisions of the Duality it's certainly possible there were a couple of tweaks along the way - in addition to standard com...

The TLC2264 (and 2262, the dual version) is definitely key to the Tech21 sound. Nearly all of their designs rely on opamp clipping, which is pretty rare in effects in general because it usually sounds very bad - but they found an opamp that clips well the way they use it. It's pin-compatible with th...

The theoretical goal is to improve performance (e.g. reduce noise) by providing better isolation between stages. I've seen this in many high-gain pedals. Likely they just did it in the original design as a preventative best-practice sort of thing, not to fix an actual issue they discovered during pr...

All right, I took apart a v2.01 (serial ~221000, December 2021) and the preliminary findings are as follows: Mike is, once again, either a liar or an idiot (I would lean toward liar). So far the only difference I can see is that there are two SMD LEDs (red waterclear) labeled D6 and D7: https://i.po...

...although I could certainly be missing something basic! The doubt arises because the switch on the POT has wires from the switch to the PCB. It's fair enough to solder all pins on a PCB mounted switch but running a wire which goes nowhere is harder to believe. Lol, file that under "missing s...

*** Largest doubt: Where does the other contact of SW1.2 go? It doesn't go any where on the schematic but all contacts of the switch have wires! I see that all six pins are soldered, but only the center-left pin has a visible top-side trace coming off it, with the rest on the bottom. I always inclu...

I traced a V2 (details forthcoming) and mine had a 4n7 cap in parallel with the clipping diodes. Normally this is 1n, including in PPCB's trace of the V2, so they seem to have reverted this change at some point during V2's production. It was also really dark and honestly sounded pretty bad compared ...

It's a switch configuration I've never seen before - but I believe I can see what Mike was going for, so maybe we can confirm it psychologically if not physically. Goal 1: Move the inner DIP switch function to the face of the enclosure so it's more easily accessible. (New feature, makes the POT more...

The whole idea hinges on the fact C31 isn't 100nF, if C31 is 100nF this fix cannot be correct either. Yeah, that's super frustrating. Panasonic ECQ-V 100n caps are in that smaller size, so I wouldn't say it's impossible, although in photos I've seen of the KoT, e.g.: https://imgur.com/s8OYbD2 ...it...

Here's a graph of a sim comparing the AC response differences between 1µ, 10µ, 47µ, 100µ, and 220µ values for the bias filter cap in the OCD v1 rev1 circuit: I apologize, I shouldn't have said "absolutely nothing"! Let me revise to say that a circuit with an appropriate level of power fil...

If that's true then restoring the better sound of the pre-1.8 versions can easily be done by using 10µF caps in the PS filter section instead of the new spec 220µF. Fortunately DIYers don't have to abide by RoHS laws. It was actually v1.7 when the caps were changed from 10uf to 47uf, but they were ...

Anybody sketch out the schematic for the final version of the OCD (known variously as 2.01 or 2.1) developed and sold before Fulltone closed it's doors? This is from an email someone got from Mike - A few weeks ago I was messing around and found a way to isolate the clipping via a smaller separate ...

The other has a 100n DC blocking cap on its output, I think it is not necessary. In fact, since you are clipping to Vref, that cap is a bad idea because the signal is then referenced to 0v DC and so will only clip in one direction with that cap there. You would then want to clip to ground and not V...

To clarify - I didn't trace a PoT myself... I think I sourced this one mainly from the PPCB schematic along with looking at some photos, but I've never taken one apart. The 47pf feedback capacitor was just a "good practice" addition to the circuit and is not in the original. The missing 10...

Yeah, you may be right. I was thinking in terms of inverting but yeah, noninverting is 1+1, so 2 and not unity. I'd still be very surprised if the diodes did much, but if there's a gain of 2 then there technically could be a little bit of signal to clip. If someone wanted to sim it to see for sure, ...

This is side "A" of the Duellist dual pedal released as a standalone effect. It's got a couple of changes from what's inside the Duellist, but overall pretty close. king_tone_soloist_trace_schematic.png Basically a stripped-down Tube Screamer (Son of Screamer) with several tone options. Fu...

This is side "B" of the Duellist dual pedal released as a standalone effect. It's got several tweaks & added features from what's inside the Duellist, so not a direct clone, though pretty close. king_tone_heavyhand_trace_schematic.png Basically a Bluesbreaker/Prince of Tone with a clip...

Blues Power schematic: king_tone_blues_power_trace_schematic.png Note the Q1 transistor with all three legs connected to ground... it's a decoy to throw us gut-peepers off the trail that it's a Timmy. Pics on the tracing journal to satisfy anyone's curiosity. The four diodes in the second stage also...