Enclosure not stated · 3 knobs
Fuzzhead Fx Mammoth BenderVerified
Based on the Fuzzhead Fx Mammoth Bender
From the post
I've always loved Tonebender Mk2's but always felt that it lacked some low end for the music I'm playing at the moment. So I decided to a heavy TB2 variant....no wait, it's more like this; What if an old Marshall Supa Fuzz met a Wooly Mammoth and had a baby?
It would be the Mammoth Bender. The core is a Tonebender Mk2 with some tweaked resistor values. Capacitor values and the tonestack is lifted from ZVex Wooly Mammoth. Transistors is NPN Germaniums, part number isn't that important more attention should be noted to Hfe and leakage which is noted bellow the layout.
This one is verified.
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 Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 20 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| ×2 | 12K | 12k | read from the layout by eye | |
| ×1 | 39K | 39k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 8.2K | 8.2k | read from the layout by eye | |
| ×1 | 5.1K | 5.1k | read from the layout by eye | |
| ×1 | 10K | 10k | read from the layout by eye | |
| ×1 | 1.5M | 1.5M | read from the layout by eye | |
| Capacitors 5 | ||||
| ×2 | 8.2nF | 8.2n | read from the layout by eye | |
| ×2 | 220nF | 220n | read from the layout by eye | |
| ×1 | 470pF | 470p | read from the layout by eye | |
| ×3 | 100uF | 100u | electrolytic; read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 3 | ||||
| Q1 | GT404 | GT404 | GT404, AC187, 2SD72 etc.; NPN Germanium, Hfe 80-90, leakage 200uA-300uA; read from the layout by eye | |
| Q2 | MP38A | MP38A | MP38A, 2N1304 etc.; NPN Germanium, Hfe 60-70, leakage under 150uA; read from the layout by eye | |
| Q3 | GT404 | GT404 | GT404, AC187, 2SD72 etc.; NPN Germanium, Hfe 150-200, leakage 200-400uA; read from the layout by eye | |
| Potentiometers 3 | ||||
| Fuzz | B1K | B1k | Potentiometer | read from the layout by eye |
| Tone | B25K | B25k | Potentiometer | read from the layout by eye |
| Volume | B10K | B10k | Potentiometer | read from the layout by eye |