Spaceman Atlas III

Hope everyone's staying safe and healthy. Today's layout is a unique preamp booster from Spaceman Effects, the Atlas III. It uses some FETs I'd never heard of in conjunction with a couple low gain silicon BJTs (use something in the 175-225 hFE range). The switch controls the phase of your signal (it's internal in the original). Schematic can be found here for reference.

Also, I updated the Make a Difference page on the website to include a few funds working to help in the aftermath of the Beruit explosion. It's killed well over 150 people, injured 6000 and left over 300,000 people homeless. If you can, do some good, offer some home and help out some people who are really hurting.

Spaceman Titan II

Happy Fuzz Friday! Here's the Spaceman Effects Titan II fuzz, traced by Dino (Digi2T). I simplified the polarity protection, removing the BS250 in place of a simpler 1N5817 diode. Transistors need to be pretty low gain—under 200 hFE. Should be an easy fit for a 1590B.

Spaceman Effects Saturn V

Here's the Spaceman Saturn V boost pedal. It's a pretty unique booster and uses depletion mode LND150N3-G MOSFETs. In original units, there are 2 resistors in series going to each drain of the transistors. They essentially create a 4.7k resistor using some really uncommon values. (It appears that the only reason for that is for more interesting guts. And lets be real, Spaceman has some of the best looking pedal guts around.) I've included room for the ferrite beads of the originals to fit on the board (these reduce RF noise) and if you wire the pots off board you can probably fit it in a 1590a. More info and schematic found here.

Spaceman Effects Gemini III Dual Fuzz Generator

This week's Fuzz Friday layout happens to be the 500th layout on the blog! So for #500 it has to be something cool, so here's a really unique fuzz from Spaceman Effects–the Gemini III Dual Fuzz Generator. As the name implies, it has 2 sides: silicon and germanium. The Blend knob pans between the 2, and each side has a 3-way gain switch. I've laid it out for board mounted pots for a 125B with top mounted jacks.

It's a good idea to experiment with the transistors, especially on the germanium side. Here's some good alternatives from digi2t who traced it over on DIYSB:

Q1: Russian MP20B (hFE: 80-85)

Q2: Russian GT404 (hFE: 120-130)

Q3: Russian GT402 (hFE: 100-115)

Q5: BC109B or 2N3700 (hFE: mid 200s)

Q7: 2N5088

Also the 1nF cap near the input apparently really needs to be a polystyrene. YMMV