Enclosure not stated · 3 knobs
Emanating Fist Electronics XB-70Verified
Based on the Emanating Fist XB-70· 2 other boards clone it
From the post
Direct from the captain:
The origin of the idea was to be able to make some Ram Head's at some point with and greater ease. I don't really care to do that to be quite frank, old shit is old, so I have opted for this route. The XB-70 is a Big Muff, but to be precise, a clone of my Guild Foxy Lady...that I think is from around 1977!?!? I can't quite recall to be honest. The year ain't important, though the fact it sounds like torn leather soaked in piss and salt smushed lovingly into ears does. It is a brute of a pedal, has a really intense roar at full tilt, like any good Big Muff really. Though my Guild has the extra added bonus of insanely loud background noise and batshit crazy amounts of feedback ladened sustain. So the XB-70 takes this particular Guild box as a reference point though assembled so it's a little more polite but still packing mucho fire in tah belly. As much fun as it would have been to clone that throwing shit at the walls amount craziness into these for the most part the old Guild sounds that way because one of the transistors is fucked. In other words, most sane folk would consider a pedal that they had purchased that sounded this way to be very defective.
So to summarize. The X8-70 is a Guild Foxey Lady replica, from around the time EH were knocking out the Ram Head Muffs, that has a bad attitude but will play nice and not hurt your feelings.
Original Pedal:
With Mids Switch:
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.
Parts list 24 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 2 values the reader of this layout was not sure of
- 430k at column 6 rows F-H: printed clearly, unusual value
- 3nF at column 9 rows F-H: printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 11 | ||||
| ×3 | 100k | 100k | read from the layout by eye | |
| ×1 | 22k | 22k | read from the layout by eye | |
| ×1 | 3.3k | 3.3k | read from the layout by eye | |
| ×2 | 33k | 33k | read from the layout by eye | |
| ×3 | 470k | 470k | read from the layout by eye | |
| ×3 | 150r | 150 | read from the layout by eye | |
| ×1 | 820r | 820 | read from the layout by eye | |
| ×5 | 10k | 10k | read from the layout by eye | |
| ×1 | 430k | 430k | read from the layout by eye | |
| ×1 | 15k | 15k | read from the layout by eye | |
| ×1 | 47k | 47k | read from the layout by eye | |
| Capacitors 7 | ||||
| ×5 | 100nF | 100n | read from the layout by eye | |
| ×3 | 560pF | 560p | read from the layout by eye | |
| ×1 | 3nF | 3n | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×2 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×4 | 1N914 | 1N914 | D1-D4; read from the layout by eye | |
| D5 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 1 | ||||
| ×4 | NPN | NPN | Q1-Q4, part number not given; legend: NPN Si Gain ~500hfe; read from the layout by eye | |
| Potentiometers 3 | ||||
| Volume | B100K | B100k | Potentiometer | read from the layout by eye |
| Tone | B100K | B100k | Potentiometer | read from the layout by eye |
| Sustain | B100K | B100k | Potentiometer | read from the layout by eye |
Other boards based on the Emanating Fist XB-70
- Emanating Fist XB-70 Dirtbox Layouts
- Emanating Fist XB-70 Effects Layouts (blog) · 125B