Ivor Arbiter took the round shaped enclosure idea from a microphone stand and it was the first pedal including a DPDT stomp-switch. Again, an 80 to 90-ish silicon device will work for Q1 if you re-bias using a 10K pot or trimpot in place of the Darlington's Collector load. The output volume control is an entirely ordinary volume pot. A subreddit for discussion of all things electrical and computer engineering. Their value is indicated on them. How this circuit works. It’s 1966, and Arbiter Electronics Ltd, captained by Ivor Arbiter - the man responsible for the ‘dropped-T’ Beatles logo and (for better or worse) unleashing karaoke onto Britain - introduces the world of music to its newest arrival, the Fuzz Face: “Fuzz Face is the new fuzz box from Arbiter giving the ultimate in controlled effects,” the sales blurb of the time enthused. That means AC signals have higher gain more like if it was connected like Q1, but still with some of the benefits of having the 1k resistor there (I won't get into that, it's kind of complicated). Earlier variants are fuller sounding, while later ones are rather bright and cutting. dunlop electronics. But, this circuit uses a … It's a tempting project to try as a first build because of its simplicity, but the simplicity of the circuit belies a couple of land mines: For best results, some attention is needed to selecting transistors for it (yes, even if you build with silicon), and trimming the values of the bias resistors is often required. It's pretty complicated to get into the exact details of what it does. The key to building a good fuzz face is ensuring that transistors are getting the correct voltage. It will block a little bit of the guitar's bass frequencies as well. The transistors form amplifiers and the capacitors pass high frequencies and block low frequencies. 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! The soldering will release fumes that are harmful to your eyes and lungs, work always in a well-ventilated environment and avoid breathing the generated smoke. Fuzz Face's electrolytic input capacitor. This cap lets the guitar signal through, but allowing one side of the cap to be 0.6 V higher than the other. Resistors do not have polarity, you can place them in any direction. A good connection should cover the joint without touching any adjacent pad. By cascading the two amplifiers into each other, the signal level gets so big that the second transistor starts distorting quite a bit. dunlop electronics. The circuit appears to be clipping the signal and adding odd order harmonics. The polarity is also marked for the negative pin. To indicate the correct orientation, one side of the transistor is flat and the other one is round. The 100k resistor complicates things a lot. Pedal cloning circuits are a great way to get into design of circuits and discrete components. NOTE: The above perfboard layout, while drawn for the Bazz Fuss v1, can be easily adapted for use with the v2 or v3 simply by using sockets for the capacitors, transistor, and diode. As an amplifier, it takes the input signal and makes it louder. In a circuit such as http://www.geofex.com/article_folders/fuzzface/fftech1.gif how do the capacitors & transistors assist in creating the distortion of sound? $129.99. Press question mark to learn the rest of the keyboard shortcuts, http://www.geofex.com/article_folders/fuzzface/fftech1.gif, http://www.geofex.com/article_folders/fuzzface/fftech.htm. $149.99. Maybe the general concept of the capacitor & transistor? One of the most sought after reissues is the BC109C version produced by Crest Audio. jhf1. dunlop. The polarity is marked for the positive pin. Let’s first distinguish between the two Fuzz Face eras. However, AC signals (including the guitar signal) will "see" the capacitor as being a short-circuit, which basically means the resistor value is lower (depending on the position of the potentiometer). This causes some of the output signal to get fed back into the input, and this feedback changes the way the distortion happens. The polyester capacitors have their value marked with three numbers. Fuzz Face Original Version (PNP) Components To use a PNP Fuzz Face with a normal 9V power supply, you need to include the power inverter section which is C1, C8, C9, D1 and IC1 which is generates the -9V required. Led diodes have polarity, the cathode is indicated as a flat surface on the side of the diode and also it is the shorter led. Schematic by Jim Dunlop Note: Q1 & Q2 are MPSA18 Demo sound of Jimi Hendrix Fuzz JH-2: The Jh-2 has a tendency to fold in on itself and gives the impression that unity gain is unattainable: the secret? These capacitors do not have polarity, you can assemble them in any direction. This is all a bit of a simplification (the full explanation needs some pretty complicated math with imaginary numbers), but hopefully it helps. Transistors are three terminals components and their model is printed on them. fuzz face® distortion. And of course two controls: fuzz + volume! They are marked with A, B or C for logarithmic, linear and reverse logarithmic, respectively. The site may not work properly if you don't, If you do not update your browser, we suggest you visit, Press J to jump to the feed. Tantalum capacitors have the value printed on them. This ring is marked as a line to indicate the correct polarity on the PCB. This circuit we use IC-741 op-amp. The following diagram is the Jimi Hendrix Fuzz Face Pedal JH-2 circuit diagram. Diodes have their type number marked on them. You can either use a multimeter or the color bands to obtain their values. A large portion of the Fuzz pedals available today are re-issued and modified versions of either the Tonebender, or the Big Muff PI Fuzz pedals. jdf2. Fuzz Face's electrolytic input capacitor. Thanks for the reply but do you know the specific roles the capacitors/resistors have in the process? But when we look at the circuit: The ceramic capacitors have their value marked with three numbers. The resistors should be ¼ Watt metal type. 2.2uF 35V 105C Radial Electrolytic Capacitor 5x11mm, 22uF 50V 105C Radial Electrolytic Capacitor 5x11mm, 10nF 0.01uF 100V 5% Polyester Film Box Type Capacitor, 50K OHM TRIMMER POTENTIOMETER CERMET 1 TURN 3362P, 40 Pin DIP SIP IC Sockets Adaptor Solder Type, 47uF 50V 105C Radial Electrolytic Capacitor 6x11mm. This two terminals component has polarity; a ring near the side indicates the cathode. The circuit remained exactly the same as the original, they just used higher gain BC109C transistors. Electrolytic capacitors have their value printed on them. Additionally, the longer leg is the positive and shorter the negative. Silicon Fuzz Face into clean Fender amp Silicon Fuzz Face clone into a clean Fender amp simulation. His resistor designations (R2, etc) are not the same as the designations on these projects. Different transistor and capacitor setups have been used over the years. 1# Simple Guitar fuzz box circuit. Assemble the tantalum capacitor according to the positive polarity (+) marked on the PCB. Additionally, the longer leg is the positive and shorter the negative. Non Polarised Capacitors- Non-Polarised capacitors can be mounted either way around. The input capacitor was a 2.2µF electrolytic axial lead. Use a small screwdriver to adjust them. Normally use a Dual power supply(+/- ground). However, for a larger input, it isn't very linear - that is, it will distort the signal more as the signal gets larger, and eventually clip. As simple as that! Looks like you're using new Reddit on an old browser. So this will cut off the bass a little bit (but how much depends on the pot position as well). Finally, cut the remaining of the component leg and inspect the joint. This is why Fuzz Faces are so famous for their interaction with the guitar volume control. Place the components over the footprints following the designators. Read as picofarads (pF), the first two are the 1st and 2nd digits and the third is the multiplier code. The first-stage device is a regular Fuzz Face Q1, and I did not need the stabilizing capacitor. Integrated Circuits (ICs) have their model printed on them. Then, melt 1-3 mm of solder wire on the joint and make sure it flows properly on both pad and component leg. Place the component and firmly hold the PCB. For those wondering "fuzz face" is a guitar pedal. Ceramic capacitors. The Roger Mayer Axis Fuzz is but one commercial example of this technique; the Harmonic Percolator is another. A transistor set up like either of the ones in the Fuzz Face is a common emitter amplifier.As an amplifier, it takes the input signal and makes it louder. 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. Also, in reality, the guitar signal doesn't see the capacitor as a perfect short circuit - it only does for higher frequencies. Close. The Fuzz Face is an effects pedal for electric guitar, used also by some electric bass players. The 0.01µF capacitor that connected to the third lug of the volume pot was metallized polyester. Warranty Information. A notch half-circle or a dot indicates the correct position of the IC on the PCB. For a beginner, building a Fuzz Face can be a treat or a trial. The Fuzz Face and other derived circuits rely on the components inside the guitar becoming part of the circuit. The circuit sounds excellent, and it still needs only one scarce part. You should use a soldering pencil of 15-30W and solder wire of 1 mm diameter. Unless you know what you're doing and have a positive ground PSU, … However, for a larger input, it isn't very linear - that is, it will distort the signal more as the signal gets larger, and eventually clip. New comments cannot be posted and votes cannot be cast. ffm6. Product Manual. The Fuzz Face series: 2-Alchemy Fuzz The process that lead to my first (semi-)successful silicon Fuzz Face was a long, difficult and at times frustrating one, but working through several ideas about fuzzes and electronics in general and talking about this with my colleagues ( Thei's blogspot ) gave me a huge boost and a structural idea about why certain components work better than other. Silicon Fuzz Face into crunch Vox amp Silicon Fuzz Face clone into a crunchy Vox amp … This capacitor is in the circuit to replicate the ‘Miller effect’; the high frequency roll-off that occurs with the Fuzz Face’s original germanium transistors. These capacitors do not have polarity, you can assemble them in any direction. Fuzz Face my gear Stories Blog Shop EVOLUTION OF THE STRATOCASTER. the 2.2 and 0.01 uF caps on the input and output are to account for different DC voltage levels - the input signal is going an AC signal centered around 0 V, but the input to the Q1 will be an AC signal centered around roughly -0.6 V - i.e. The original versions of the Fuzz Face were equipped with PNP Germanium transistors. Trimpots are similar to the potentiometers. The output cap is the same deal, except with even more DC bias than that. $119.99. Posted by 6 months ago. Video COMMENTS: Oqsy: GTs were my favorites.. Transistors charge “hate cha fees”? Read as picofarads (pF), the first two are the 1st and 2nd digits and the third is the multiplier code. Tantalum capacitors have the value printed on them. jimi hendrix™ '69 psych series uni-vibe® chorus/vibrato. I want to build a Fuzz Face inspired circuit and I keep seeing on schematics that the input capacitor is an electrolytic one, same thing for Home-Wrecker's Sili-Face. This Fuzz Face Distortion is constructed to vintage specs, featuring the original Germanium PNP transistor design for a rich, creamy fuzz sound. The original Fuzz Face circuit requires just a handful of components and a small circuit board. It is possible to place the components on both PCB sides if required, just be careful to keep their correct polarity. This pedal can only be powered by one 9-volt battery (not included). The potentiometer also provides a way of controlling the total gain of the circuit.
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