Effects Layouts Spice Runner (Way Huge Saucy Box)

MattG

Well-known member
Build Rating
5.00 star(s)
Here is my build of the Effects Layouts Spice Runner, based on the Way Huge Saucy Box. From what I've gathered, based on Internet hearsay, this is a simplified version of the Way Huge Pork Loin (for which PedalPCB offers a board, the Lamb Chop). Just by looking at the schematics of the two circuits, the similarity is pretty obvious. And as far as I can tell, these are pretty original circuits overall.

What turned me on to this circuit was this TGP thread: PSA: Best Transparent OD for $59 on Reverb. If that thread is accurate, then the Saucy Box also sells as the The Way Huge Silver Overdrive (WH205OD). I wasn't really in need of another overdrive. But I'd never heard of the Silver Overdrive/Saucy Box; I'd only heard of the Pork Loin, but never looked into it meaningfully. Based on the positive TGP commentary, I thought it was worth looking for a schematic to see what's under the hood. I found @VanWhy's excellent Spice Runner build report, which led me to the schematic.

Once I looked at the schematic (and watched a few demo videos) I had to give it a try! There's a lot of commentary comparing this to the Klon Centaur. I don't know how that got started, but the only similarity is that there is a clean blend feature. But the actual clean and drive circuits are completely different. Specifically with the Saucy Box/Spice Runner, the clean portion of the circuit is something I've never seen in a pedal: two series Neve 1073 preamps. I asked about that in this thread. This is an all-discrete topology, the likes of which I've never seen before. Six total PNP BJT transistors and a bunch of supporting components for your clean signal. :) Is that really necessary? I don't know, but I'll assume it's adding some mojo. :) But, it doesn't require any hard-to-find or unicorn tear parts, just 2n5088 transistors, standard capacitors and resistors.

The drive circuit uses four total opamps (TL074). The first stage is a pretty classic 1n4148 diode pair in the feedback loop clipping arrangement. The second stage looks to be tone-shaping, the third stage is dirty/clean blend, fourth stage looks like more tone-shaping. Interesting are the series resistor-capacitor-LED pair-GND constructs in a couple places. I don't know if that's adding more (subtle) clipping, or just some kind of filtering or voltage clamping or something else entirely. This circuit needs the @Chuck D. Bones treatment!

The build and assembly was unremarkable, other than being a very tight layout with a lot of components. A few oddball resistor values, hence the series "tents" you see in the pictures. One wacky value was 390R - when I saw that, I thought to myself, that's really weird, no way I have that value in stock. But I actually had some 392-ohm resistors! I have no idea why I bought those; they measured 387-ohm on my cheap DMM, so in they went! Otherwise, all the components are current-production commodity parts. I built it exactly per the build doc, the only liberty I took was using box film caps instead of electrolytic for the 1uF coupling caps. Those are all the blue box caps you see, they are bigger than 1uF electrolytic, so made the build a bit less tidy.

The small PCB at the bottom is my buffered electrical bypass module. The enclosure is the Alexandrite 125B from @StompBoxParts. It's a really neat finish - the color kind of shifts depending on how the light hits it. Perfect for pedals with an "obvious" control scheme (where you can get away without labels, aka @MichaelW school of pedal art). (Fortunately, I didn't scratch the finish like I did in my last Alexandrite build).

I spent about 20 minutes playing last night after I finished it. It was one of those scenarios where it's like, it's late, and I should go to bed, but I just finished this build and want to test it out! I have to say - my initial impressions are very positive. If you've seen my recent build reports, I was really enamored with the Cornish CC-1 circuit for low-gain. But the Saucy Box/Spice Runner might just edge it out! More play time is needed - I need some time for the newly-completed-build-honeymoon to wane a bit.

I found there's also a Saucy Box HC variant, the HC is for Hard Clipping. I wasn't able to find a schematic for this. I'm curious if the gain stage was significantly reworked, or if some diodes-to-ground were just shoe-horned in somewhere? Might be a worthwhile tracing endeavor if I continue to like this pedal as much as my initial impression.
 

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Good stuff, Matt! I had the retail pedal as well. Then I built mine and sold the retail. It is a pretty underrated drive pedal imo. I haven't touched mine in a bit. I will have to break it back out again.
 
That Alexandrite looks fantastic.

Excellent build report with supporting links and very generous to share your buffered bypass.
I've got the Lamb Chop PCB, but while I checked out the Spice Runner and have its build doc, I wasn't interested in getting that PCB...
UNTIL NOW!

T1redhands' post with link to DIYRE in your Lamb Chop thread sent me down a bit of a rabbit-hole as I find Neve stuff quite fascinating.

For example, the Neve module BA283 has 6 transistors vs a 741 op-amp's 20!


Minor correction
"Six total PNP BJT transistors and a bunch of supporting components for your clean signal."
I know you meant NPN !
😉
 
So this is definitely a keeper for me. For now anyway, it's replaced my "Egregiously Expensive Crunch" (Cornish CC-1 clone).

Having spent some more time with it, I don't think it's quite as EQ-neutral ("transparent") as the CC-1. Specifically, I think it might actually cut a little bit of bass - not tubescreamer-level bass cut, but pretty close to what I personally find to be an ideal. I generally like a bit of bass rolloff, as I think it sounds better in a band mix, and also prevents too much bass ("mud") when stacking into other drives. So the net result, at least to my ears, is an EQ curve that I think is pretty close to an OG (mk1) Bluesbreaker (or e.g. Prince/King of Tone, or Snouse Black Box). However, the Spice Runner/Saucy box is (again to my ears) a bit flatter in the low bass, whereas Bluesbreakers seem to have a hint of midbass bump.

Lots of words, and all very subjective, and mostly amounts to hair-splitting anyway. The short version is, I really like it. I do think it stacks better than the CC-1, and seems to be an almost perfect match for my long-time medium gain favorite, the Hard Rock Pinnacle (Chuck D Bones modified Animals Diamond Peak). Plus I like a simple three-knob control scheme.

I really like the character of the drive or dirt itself. I briefly put it next to my Aion Andromeda Deluxe (Nordland ODR-C), just for comparison. I've always really liked the dirt/drive tone of the ODR drives I've built. But I've never been able to make one work for me in a band context. I feel like I either get lost in the mix, or have to set it in such a way that some of the mojo is lost. But to me, the dirt/drive character of the Spice Runner/Saucy box is actually pretty close to that of the ODR. But as I implied above, the Spice Runner EQ "just works" for me.

The other thing I'm really liking about this drive unit is that it has particularly good clarity, even at higher drive settings. It's not a high-gain drive, so "higher drive settings" is relative to the scope of this pedal. For my low gain, edge of breakup needs, I'm always trying to find a nice balance between getting some good dirt when needed, but maintaining as much clarity and note separation as I get playing completely clean. I think clarity and dirt are somewhat mutuality exclusive, but I think this drive does a good job of bucking that trend. This could very well be due to the clean blend - but that may be confirmation bias at play, since it seems to be a common refrain that a clean blend in a drive adds clarity. And now I'm starting to think maybe the complicated Neve-preamp-based clean signal path does in fact add some mojo.

At any rate - I like it enough that it's getting the MattG Custom PCB(tm) treatment. As you can see, this is a pretty big circuit. And my intention from the start was to make the layout bigger, by making explicit space for using box film caps for all the 1uF coupling caps. I also wanted a fancier power supply (P-channel mosfet reverse polarity protection, ferrite bead, big filter cap). And now I'm generally building most custom PCBs with one of my bypass schemes integrated. In this particular case, I want to use the buffered electrical bypass, which takes up a fair amount of board space, at least in through-hole format.

So this gave me an opportunity to do something I've wanted to do for a long time: create a stacked PCB design. This will be my prototype stacked design, where the core effect is on the main/big bottom board, and the smaller PCB on top will have the power supply, buffer, switching logic, status LED control, and actual bypass circuit. Of course this isn't a new idea; I first encountered it when I built the PedalPCB Byzantium Flanger. @dan.schumaker also employs this scheme in his DM-3 design (which is waiting in my "to build" pile!). And plenty of others around here have employed the stacked concept. So I'm finally joining the PCB stacking party!

The boards are the same exact width (the difference in width is just image scaling). The layouts aren't as symmetric and pretty as the Spice Runner or most of @Robert's boards. But, I was able to route almost all the traces on the top, there's very little bottom-side ground plane breaks (except for all the plated through-holes of course!). JLC just finished fabbing these, now I wait on the slow (cheap) shipping. Hopefully they work!

gigantic_sauce_container.png stackable_psu_bypass.png
 
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