Forum member Gus just started a thread on a different way to bias a Fuzz Face. The Fuzz Face is one of the big classics in stompboxes. For example, the BC108 transistor which is commonly found silicon fuzz face pedals has a gain range from 110 to 800. However, the original Fuzz Face was mass produced and each transistor was not specifically chosen. A 470k ohms pot would place 235k ohms series resistance on the output. Frequently asked question on transistors: types, substitutions, how to test, use and misuse them. Et bien sûr, 2 contrôles : volume, et fuzz, tout simplement. The Fuzz Face is a distortion guitar pedal designed in London by Arbitrer Electronics Ltd in the autumn of 1966. So it is NOT possible to power it along other pedals on one power supply. Le problème qui se pose , c'est que les choses ne sont pas aussi simples : hendrix avait au début la fuzz face des 1960' en transistors germanium ( Ge ) , puis il a eu la version 70' en transistors silicon ( Si ) . That spitting, snarling and surly sound of rock legends past and present! Because it has happened with 2 different builds I'm thinking maybe it's an offboard wiring problem? Fuzz Face Fuzz Does the Fuzz Face really need an introduction? In … Figure 2 shows the gain block represented by the Darlington pair dropped into the familiar Fuzz Face circuit. The fuzz schematics you can find on the internet, like the fuzz-face, need some tweaking as they’re build for guitar level signals but circuit topography is pretty much the same. Note that the LED leads are reversed for the PNP versions. La FUZZ FACE , c'est la fuzz de hendrix / clapton ... et même SRV . This Germanium version features 2 germanium transistors and has posititive ground. The Fuzz Face, first issued in 1966 by Arbiter Electronics Ltd, is probably the most famous fuzz used by many guitarists like Jimi Hendrix, David Gilmour, Jack White from The White Stripes, Dan Auerbach from The Black Keys and many more. Le circuit de la fuzz face est vraiment très simple, comme on peut déjà le remarquer au vu du faible nombre de composants : 4 résistances, 3 condensateurs et 2 transistors ! But when we look at the circuit: Fig.1 Fuzz face circuit, classic 60s original schematics (made with Fritzing) Not so easy to understand, isn't it? bref c'est du tout bon . Through this design's past you'll find all kinds of different variations in the basic original circuit, from PNP Germanium to NPN Silicon, and a countless number of fuzz pedals that are based on it. It was only in 1993 that Dunlop Manufacturing took over the production, making a variety of Fuzz Faces to this day. A guide to the best Fuzz Face pedals - a circuit that deserves to sit proudly on the fuzz pedal podium, offering a nuanced and dynamic sonic behavior at different gain levels. This kit contains all parts you need to build a fully functional effect pedal. EMH is the Electronics Math Helper. ages (cabine leslie) sliver (tremolo) phase lag (phaser) retards. And of course two controls: fuzz + volume! To bias the transistor you will require a Digital Multimeter that has the ability to measure voltage. These parts can be re-used hundreds of times to try out ideas. It currently does only a few calculations, but more will be added as time allows. Capacitors (1)0.01uf K40Y-9 Paper in Oil, (1)22uf NOS Roederstein axial, (1)2.2uf Metalized Polyester film. The FUZZ from Jackson Audio takes faithful recreations of historic fuzz circuits and brings them together in one modular pedal that allows you to create classic fuzz sounds as well as new fuzz sounds that are impossible with these original circuits! This is the reason why different Fuzz Face pedals sound a little different, and some better than others. ground Fuzz Face with all your other (negative ground) pedals if you add this additional wrapper inside your pedal. Voltage/Resistor/Q1/Fuzz Face. Check it out! They are distinct from other families by their dissipable power and their maximum collector current. impedance than its original germanium Fuzz Face counterpart. Consommation: 10mA maximum. Has anyone else had this problem? You need an extra power supply or a battery. Fuzz Face Fuzz Face Kit Parts list (1)Circuit Board, (1)Battery Clip Resistors Welwyn Metal Film 470r, 8.2k, 33k, AB Carbon Comp 100k. Schematic M VOLTAGE INVERTER C1 10u elec C8 10u elec C9 100u elec D1 1N4148 D2 1N4001 IC1 7660S The voltage inverter circuitry incoporated into the PCB allows you to power a positive-ground version of the Fuzz Face on your normal negative-ground supply chain. Some players find that the output volume is too low, but there is a simple mod to fix it. C’est une vraie Fuzz, qui décroît de manière un peu floue sur la fin des résonances des accords, mais dont le sustain tient la route si l’on tire bien sur la corde. ... A 1N914 will reduce voltage to the circuit by about one volt (this is not necessarily a bad thing for this circuit). But there seems to be a ton of variance in sound in just that style of fuzz, which seems to be down to the transistors and how they are biased. history. So it is NOT possible to power it along other pedals on one power supply. The Fuzz Face is perhaps the most well know implementation of this topology, however two very similar effects predate the Fuzz Face, and the history of these units, and the mystery of the original designer, is a subject of much debate and fascination. Here’s what I’ve got: Russian MP39B : germanium PNP, relatively low hFE (20-60) used in Dunlop Bonamassa Fuzz at Q1 position. Sili-Face. For the best results with this PCB the transistor in Q2 needs to have the correct voltage for optimum performance. You can select the enclosure you want. Fuzz face is really a simple circuit design, as you can already tell by the number of components of the circuit: 4 resistors, 3 capacitors and 2 transistors! On a mass market approach, it is extremely difficult to get the exact germanium transistors needed. FUZZ! It is best to place it first, or before them, in the pedal chain. I didn’t use any fancy transistors, like is so often the case in a fuzz pedal. Parfait pour les notes individuelles, comme pour les accords. The key to building a good fuzz face is ensuring that transistors are getting the correct voltage. Voodoo Labs Pedal Power 2 Plus power supply. Most of the other brands deal with this in one of three ways: 1.) As simple as that! Out of 20 that I bought, there was not a single one leaky or even close to what’s considered a leaky transistor. Transistors (2)Hand-Picked Germanium Transistors - Q1 = 65 - 80 h fe Q2 = 85 - 110 h fe. The fuzz sounds strange and super gated and nothing like any clips of a fuzz face I've ever heard. 4. Mais quand on regarde le circuit : Fig.1 Circuit de la fuzz face, version des 60s (tracé avec Fritzing) Pas si facile hein ? Do the same thing if you are checking the bias of Q1 collector, but IIRC, the voltage should be about 1.5V. Stompbox Star; Posts: 139; I love the smell of germanium in the morning... Re: Silicon Fuzz Face Biasing problem « Reply #1 on: June 16, … This is a feature not found on most fuzz pedals. AC128 kit $16.90 Mullard OC75 kit $35.90 Une pédale de Fuzz (avec l’octave supérieure réglable) au look magnifique, dont le son évoque son inspiratrice ou les vieilles Fuzz Face. The Fuzz Face is one of the big classics in stompboxes. A fuzz face, to go from glassy clean'ish to overdrive to full on fuzz with the volume knob. element (reverb à ressorts) utopia (delay) autres. Current leakage was in the range of 20uA. In a Common Emitter transistor the voltage … This is what I do for the 1948 Fuzz I make. Also, the battery is part of the circuit. When I began building effects, I dismissed the Fuzz Face as a circuit for Hendrix-worshippers. If you used stock values you should be pretty close already. A more conventional term would be "shunt-series feedback voltage amplifier," or something along those lines. Has thanked: 2 times. A guide to the best Fuzz Face pedals - a circuit that deserves to sit proudly on the fuzz pedal podium, offering a nuanced and dynamic sonic behavior at different gain levels. This kit contains all parts you need to build a fully functional effect pedal. The inverter allows Twin Benders to be powered just like any regular 9V pedal, even daisy chained with other pedals sharing an adapter. As some pedals, like the classic Fuzz Face circuit, require two or more transistors, understanding these gain ranges becomes incredibly important. Figure 1 shows the idea: the two resistors form a voltage divider that puts the Base of Q2 closer to ground or closer to the current source represented by the Emitter of Q1. Whereas an OC71 (also found in some more vintage Fuzz Face pedals) has a gain range of 30 to 110. If the pot is set to 12 o’clock (half-way) then a 100k ohms pot places 50k ohms series resistance on the output of the circuit. Messin' around with a FF circuit on my breadboard right now. Logged GammaFlex. If you give the Fuzz Face less voltage, it becomes crackly and bright, and if you give it more voltage, it becomes huge and round. ex : AC128 (Fuzz Face, 1966-69) These transistors were at first designed to drive the loudspeakers of radios and consumer audio products. 28 posts 1; 2; Next; polifemo Breadboard Brother Information Posts: 136 Joined: 09 Nov 2007, 22:42 Location: Stockholm, Sweden. As you may have noticed, the Super Badass has one special feature that makes it stand out from other fuzz pedals: the Variac control. How Do Other Pedal Brands Deal With This? Special thanks to Peter Snowberg for assisting with this project. Arbiter Fuzz Face The Fuzz Legend Welcome to a legend. The voltage required is 4.5v. Also, Mac posted his ideas. This fourth knob simulates the voltage variations of the battery, which can range between 5 and 15 volts. Do NOT plug your Fuzz Face into a daisy chain adapter. The Ramble FX Twin Bender solves this problem with a built-in voltage inverter. The Fuzz Face circuit runs on power that is reverse polarity of a more common, Boss-type effect. www.diyguitarpedals.com.au 5 2.2 Voltage Gain of the Input Stage . The sound of rock and righteous indignation worldwide! Simply put, the volume pot is a voltage divider (that encounters an AC signal only). Variances in voltage and internal resistance can make an audible difference. The FFM3 is the latest reissue of the legendary JHF1 Hendrix Fuzz Face, ... Gain: amount of fuzz; Variac: voltage level; What Is That Variac Thing? All the parts needed to set up the basic NPN silicon Fuzz Face found in my article Breadboarding A Silicon Fuzz Face. In 1967, some models have been known as bringing a so called “creamy” sound texture to Fuzzboxes. high voltage (plexi preamp) feed me (fuzz face) bitoun fuzz (double fuzz) freq up (boost) modulations. The original board-mounted pot version is ideal for the simplest way to build a NPN version, or a PNP build that can't be daisy-chained for power. A super value that includes an organizer with all the parts and materials for this project and more. Post by polifemo » 03 Jan 2014, 15:23. The Metal Oxide Fuzz low input impedance will load the guitar pickups. Well, this latest version does... Two different PCBs are available with the kit. Break the Chain. C4 is not needed if you plan on using only battery power. This is the basic schematic of a PNP germanium fuzz face. The R3 and R4 resistors are a voltage divider that is reducing the signal level going to the output. Transistors. The Dallas-Arbiter Fuzz Face has been around since 1966, and it shows no signs of dying any time soon. I had also seen much written about the complexities of proper biasing and transistor selection, which made the Fuzz Face a bit more more daunting for me, still a relative novice. This 69er version features 2 germanium transistors and has posititive ground. Welcome to EMH! Other than that, Bonamassa is pretty much standard Fuzz Face with Russian transistors. This is the reason why they do not respond well when they are placed after other pedals. Thus the bias voltages will shift up and down, so the sound produced by a germanium Fuzz Face may change as the equipment heats up or cools down. Glue Fuzz Technical data Power: Input voltage: 9v. You need an extra power supply or a battery.