klon centaur bill finnegan

Klon's Bill Finnegan sells the Centaur direct via his website and units must be pre-paid. Developed between 1990 and 1994 by Bill Finnegan, the Klon Centaur is arguably the most infamous, and frankly mythical, overdrive pedal in the music scene. The Klon Centaur in an overdrive guitar pedal designed by Bill Finnegan with the help of 2 MIT Electronic Engineers between 1990 and 1994. The frequency response of the Output Stage looks like this: The Klon Centaur does not use a 3PDT switch (aka True Bypass), so when the effect is disabled, the guitar signal still passes through the Input Buffer and two high-pass filters created by C1&R2 and C2&R3. The design process took more than 4 years and the result was a mythic $329 hand build pedal that was running in production for 15 years. Note: The Slew Rate of an op-amp describes how fast the output voltage can change in response to an immediate change in voltage at the input. Now perhaps as legendary as the Ibanez TubeScreamer, this pedal came on the market at the end of 1994. Deze pedalen zijn tegenwoordig zo geliefd dat ze op veilingen enkele duizenden euro’s opleveren. 2.1 The importance of a big fat power supply.3. KLON CENTAUR OVERDRIVE HISTORY It all started when Bill Finnegan was told by the sound man to turn down.To 4!!!! Needless to say I didn't get the Centaur. The Output Stage.8. Het pedaal heeft naast de voetschakelaar de drie draaiknoppen - op de Centaur gain, treble en output genoemd - die op de meeste overdrivepedalen terug te vinden zijn. var prefix = 'ma' + 'il' + 'to'; https://nl.wikipedia.org/w/index.php?title=Klon_Centaur&oldid=55677712, Creative Commons Naamsvermelding/Gelijk delen, Elektron - Analog Overdrive (bevat 8 overdrivecircuits waaronder het Klon-circuit), JHS - Klon Replica (niet meer verkrijgbaar), Ceriatone- Centura (natuurgetrouwe kopie, identiek aan het origineel), Pedalen-fabrikant JHS bouwde enkele jaren een kopie van de Klon Centaur, maar heeft altijd gezegd dat ze de productie zouden staken als Bill Finnegan de productie zou hervatten. The listing opens as follows: Since Bill gave up building the pedals a few years back, prices have sky-rocketed. buildyourowntone.com update: Tuesday February 15, 2011. The power supply uses the MAX1044, a voltage converter that can invert, double, divide, or multiply an input voltage: The key factor in the power supply is that the IC is used in an unorthodox way; this part is normally used as a "Simple Negative Converter" or as a "Positive Voltage Multiplier", but in the Klon circuit (and against the datasheet) from the 9V battery, the TC1044 makes all the functions at the same time: doubling the voltage (+18V), inverting it (-9V), and halving it (+4.5V using a resistor divider). And while it’s worth noting that his pedal is identified as #2, it’s actually the first ever to be built and sold, as Finnegan set aside #1 for himself and constructed it at a later date. This sound was later called transparent overdrive. Analysis Resources. This factor is pretty important for the Klon Centaur distortion sound signature. De originele Klon Centaur van Bill Finnegan is een van de meest gewilde stomp boxes aller tijden. var addyb7b8a4fae477cfb1f27542226efd0f22 = 'info' + '@'; Vaak klinken deze “kopieën” net anders dan de originelen omdat niet alle onderdelen meer beschikbaar zijn, te duur zijn of er bewust voor andere componenten is gekozen om een variatie op de originele Klon-klank te bereiken. Klon Centaur Sound Signature.10. The R1 input resistor will limit the amount of current going into the op-amp, protecting it against electrostatic discharges (ESD). In dit artikel een overzicht van de 40+ beste Klon klones. They will just remove the DC content from the signal. The Klon Centaur schematic could be broken down into 5 parts: Input Stage, Op-Amp Gain Stage, Summing Stage, Tone control, Output Stage and Power Supply: The circuit is quite original, showing a mix of academic electronic design together with pure experimental/think-out-of-the-box blocks. Genuine Klon Centaur Overdrive by Bill Finnegan. It also creates a high pass filter together with RV3. The Summing Op-Amp.6. The contribution is around 1dB and very likely to be not audible. The Zin is calculated as: 1MΩ is a good high input impedance that will avoid loading guitar pickups and tone sucking. The frequency response when deactivated is flat, with a roll-off on the low frequencies (fc=1.5Hz and fc=0.3Hz) and not affecting audio frequencies: The original Klon Centaur prices are shocking, but is it just hype? Although the Klon Centaur circuit remained pretty much unchanged throughout its production run, Bill Finnegan did tweak a few component values. And I added a resistor to give the circuit a very small amount of additional low-mid response—I wanted it to have a little more roundness when used with, say, a Strat into a Super Reverb. This variety of voltages is crucial to the circuit and used in different areas to create the sound signature of the pedal: 2.1 The importance of a BIG FAT power supply. However, all the potentiometers, jacks and the battery are wired and hand soldered to the PCB which makes it quite labor intensive. De Centaur werd “geboren” nadat Finnegan rond 1990 had opgemerkt dat hij zijn Fender Twin Reverb in de meeste clubs niet hard genoeg kon zetten om hem tot zijn gewenste soort oversturing te krijgen. De op dat moment populair geworden Ibanez Tube Screamer en andere overdrive pedalen gaven hem ook niet het transparante doch overstuurde geluid wat hij zocht. The KTR is unique in its design layout and also has some Bill Finnegan humor built in. 4.1 Gain Calculation.This a priory simple non-inverting topology gain calculation turns out complicated due to the fact that the C7 and C8 capacitors in parallel with the R11 and R12 resistors shape the frequency response interacting with each other: In the graph above it can be seen that the maximum gain is 40dB (100 times) around 1KHz and it decreases as the freq rolls lower or higher. Gear forums are regularly aglow with all sorts of comments about Klon. The cut frequency will depend on the potentiometer value, so as the volume level is decreased, the cut frequency goes higher, starting at fc= 1/(2xπxC15xRV3)= 3.38Hz. addya17f65c45c1e19e9ddd55ba5fcfbb716 = addya17f65c45c1e19e9ddd55ba5fcfbb716 + 'electrosmash' + '.' + 'com'; These pedals go for insane amounts o… Since then, these pedals have been used by the likes of Joe Bonamassa, Jeff Beck, James Hetfield, Stone Gossard, Noel Gallagher, and many more. When the effect is on, part of the clean signal will bleed through the R243 to the output. Boss CE-2 Chorus guitar pedal are used as pre/de-emphasis filters, Tube Screamer also creates a beautiful lopsided shape. The 1N34A germanium diodes have a forward voltage VF=0.35 which is quite low compared to silicon diodes that usually have 0.7V drop, resulting in a harder compression of the signal. Therefore, number 2 is actually the first ever Klon Centaur pedal in existence. De Klon Centaur is een door Bill Finnegan ontworpen, met de hand … Het is een zogenaamd buffered bypass pedaal wat inhoudt dat wanneer het pedaal uit staat het signaal nog steeds door een voorversterker-circuit gaat dat het signaal een maal versterkt. The Op-Amp Gain Stage. Deze pagina is voor het laatst bewerkt op 16 feb 2020 om 12:17. R2 is a biasing resistor, adding virtual ground (+4.5V) at the non-inverting (+) pin of the op-amp. De kwaliteit verschilt aanzienlijk. In 1995, two of the 1uF capacitors in the signal path were increased to 4.7uF to allow more low frequencies through, and a 15K resistor was added to ‘sweeten’ the midrange. This PCB is famous for being covered with black epoxy resin (gooped) in order to prevent people from replicating it. The op-amp used is simple TL072, proving that for a great sounding guitar pedal no exotic/mojo/expensive parts are needed, just pure and smart electronic design. As described before, this circuit will add or remove treble to the final signal: The last stage will adjust the output level of the signal, it is a simple 10K potentiometer that will shunt part of the signal to ground: Note: This cut frequency shift is not a problem because even with the output volume at 10% (RV=1K), the fc would be 33.8Hz that will not add coloring to the output signal. According to Klon’s Bill Finnegan, “it’s a much more complex circuit than the typical overdrive/boost circuit. The higher the value (measured in V/µs) of slew rate, the faster the output can change and the more easily it can reproduce high-frequency signals.The TL072 has a 13-V/μs slew rate, which is above the average op-amp slew-rate (10V/us). Regarding the TL072 clipping behavior, when it goes into clipping and the signal hits its negative rail, the op-amp promptly inverts its phase, so the circuit either latches up or shows a hard clipping behavior (even going into oscillation). “I'm Bill Finnegan, designer of the original Klon overdrive circuit, designer of the Klon Centaur Professional Overdrive unit incorporating that original circuit, and also the hand-builder of every single Centaur unit from the beginning of Centaur production in late 1994 until … I recently had the opportunity to buy a Centaur and asked Bill his thoughts thoughts. Klon Centaur overdrive effect pedal reviews and video demonstrations. does it sound so cool? 4.1 Gain Calculation. The tone control in the Klon Centaur is generally accepted as a good control which is able to adjust the sound of almost any guitar into any amp. Klon #2 for $500k! The Input  Buffer keeps the signal pristine and protects the pedal from external factors (figure 1 - left). Daarnaast kwam er een keuze schakelaar voor buffered bypass of true bypass op. In the parts of the circuit where double side PCB are needed (tracks crossing), there are links (wired bridges) that make the manufacture easier and cheaper. Na het staken van de productie van de Centaur bouwde Finnegan sporadisch nog een Centaur van de restant voorraden die hij had. Klon Centaur Input Impedance Calculation. The TL072 is a JFET op-amp, so it has a massive input Impedance (Zin = 1012Ω in the datasheet). You need JavaScript enabled to view it. I also had the circuit board redesigned with a ground plane for better grounding—again, no sonic effect except the potential for a little less hum. De in de lijst genoemde pedalen zijn meestal geen exacte kopieën maar gebruikten wel het schema van Finnegan als uitgangspunt. It passes all freqs up to 400Hz and the frequencies above that point get boosted or cut: Frequencies above 408Hz will have boost or cut. Op de meeste Centaurs is een Centaur met een zwaard in de hand afgebeeld. [Updated on 12.06.2020] A Guide to the Best Klon Centaur Clones (Klon Clones) Perhaps the most legendary (and expensive) guitar pedal of all times, the Klon Centaur was one of the first boutique stompboxes and proved that an overdrive could be much more than just distortion. Myth No.1: The Centaur is a slightly tweaked [insert name of extant pedal here] circuit. If an op-amp has a higher power supply rails, it will also have a higher slew rate and therefore it would be able to reproduce with higher fidelity faster guitar signals (transients) and higher harmonics. 4.2 Germanium Clipping Diodes.According to Bill Finnegan (Klon Centaur Designer), the type of diodes used in the Op-Amp Stage make a great difference in the sound: "These diodes are the most important factor in how the circuit sounds when it's being used to create distortion", "I have always used a germanium diode with the part number 1N34A, but you should understand that this particular part has since the 1950s or so been manufactured by literally hundreds of different companies, and having listened to as many different ones as I have, I can say with confidence that they all sound somewhat different in my circuit, and often they sound VERY different.". Het bestelproces van de originele Centaur hield een persoonlijk telefoongesprek met Finnegan in waarin hij wilde weten wat de speelstijl en de set-up (type gitaar, versterker andere effecten etc...) van de klant was en waarvoor hij het pedaal dacht nodig te hebben[1]. This sum creates a signal that has dynamics and not just pure distortion. But now, it’s back… Part of the legend of the Klon Centaur is due to the fact that developer Bill Finnegan ‘gooped’ the innards to prevent other manufacturers from copying the legendary circuit board. The seemingly mythical Klon Centaur circuit was first developed by Bill Finnegan in the early 1990s. var addy_textb7b8a4fae477cfb1f27542226efd0f22 = 'info' + '@' + 'electrosmash' + '.' + 'com';document.getElementById('cloakb7b8a4fae477cfb1f27542226efd0f22').innerHTML += ''+addy_textb7b8a4fae477cfb1f27542226efd0f22+'<\/a>'; Thanks for reading, all feedback is appreciated. Deze zijn niet door hem zelf gebouwd, maar gebruiken wel door hem goedgekeurde componenten waardoor de klankeigenschappen daadwerkelijk identiek zijn aan die van de Centaur. Furthermore, this signal is later amplified by the summing amplifier with has a power supply headroom of 27V, quite unusual for a guitar pedal which also provides a good slew-rate in order to keep all the dynamics and rich harmonics (figure 3 - right). Op de rode behuizing van de Klon KTR staat geschreven "kindly remember that the ridiculous hype that offends so many is not of my making" (Mag ik je er vriendelijk aan herinneren dat de hype die zovelen beledigt niet van mijn makelij is) refererend aan de “astronomische bedragen” die inmiddels voor het originele pedaal werden neergeteld. Er is dus sprake van getrapt clippen. 3.2 Klon Centaur op-amp: The TL072.4. Here are the most common misconceptions. Finnegan was essentially addressing the complaints some people had about the original Klon Centaur (“Make ‘em smaller, make ‘em true bypass, and let me use a standard Boss style AC adapter”). 4.3 FeedForward Networks.In parallel with the Op-Amp Gain Stage, there are 2 FeedForward networks, they have different tasks: This op-amp will add the output signal of the Op-Amp Gain Stage and the two Feed-Forward Networks mentioned above. Under the username klondirectsales, Finnegan will sell the new run direct as he handmakes them. De markt van hi-end boutique-pedalen bestond nog nauwelijks. clearly, after looking at the circuit there are some features never seen on other designs. After the distortion stage, the following op-amp is fed with a high power supply (+18V,-9V) so it would be able to keep up with the fast rate and complex waveforms of the clipped guitar signal. Het circuit zat in een relatief grote unieke pedaalbehuizing die in eerste instantie goudkleurig en later zilverkleurig was. I’ll admit that I have owned more than one Klon in my lifetime and the last one I sold privately went for over £2ooo on Reverb. Deze gaf hij aan een vriendin die het niet breed had zodat ze die op EBay kon veilen. The Klon Centaur in an overdrive guitar pedal designed by Bill Finnegan with the help of 2 MIT Electronic Engineers between 1990 and 1994. De tekst is beschikbaar onder de licentie. Zijn romige en dynamische overdrive wordt gewaardeerd en geliefd door talloze professionals. Na het staken van de productie begonnen diverse bedrijven het circuit na te maken. De Klon Centaur is een door Bill Finnegan met de hand gebouwd overdrivepedaal voor elektrische gitaar dat van 1994 tot en met 2008 in productie was. var addy_texta17f65c45c1e19e9ddd55ba5fcfbb716 = 'info' + '@' + 'electrosmash' + '.' + 'com';document.getElementById('cloaka17f65c45c1e19e9ddd55ba5fcfbb716').innerHTML += ''+addy_texta17f65c45c1e19e9ddd55ba5fcfbb716+'<\/a>'; e-mail us at This email address is being protected from spambots. The story goes like this: Klon designer Bill Finnegan made Klon number #2 first, and kept number one for himself, which he built later. Top 5 Klon Myths. Bill spends time with each customer who contacts him, primarily trying to get an idea of the equipment and playing style of the customer, to help determine if the Klon Centaur would be a … This circuit is quite important for the sound signature because it sums the distorted-clipped signal (coming from the Op-Amp Gain Stage) and the clean signals (coming from the FeedForward Networks). Klon Centaur Tone Control.7. In 1995 I made three small changes: I added a resistor to give the circuit some protection against a static charge delivered to its input—a change that has no sonic effect. Although the Klon Centaur circuit remained pretty much unchanged throughout its production run, Bill Finnegan did tweak a few component values. This is Centaur #001, built by Bill Finnegan in January 1995 and kept (never sold) by him. Other famous pedals like the. Zo zijn op de clippingdiodes na alle componenten SMD-componenten. Deze pedalen zijn tegenwoordig zo geliefd dat ze op veilingen enkele duizenden euro’s opleveren. In the same way, when the pedal is off, part of the dirty-effected signal will bleed to the clean output. JHS Pedals owner Josh Scott is currently selling Klon Centaur #2 on Reverb.com for the whopping price of $500,000. I have a REAL Klon with the KTR. The C1 input capacitor stops any DC coming from the guitar and together with R2 will form a high pass filter (fc=1/2*π*RC = 1/2x3.14x1MΩx0.1uF = 1.5Hz) 1.5HZ is completely out of the audio spectrum and will not affect the original signal or add any tone/coloring to the signal. TL072 op-amp is a JFET op-amp, therefore it has low bias current (that will reduce battery consumption) and high input impedance (keeping the signal integrity and adding minimum tone coloration). View the Klon Centaur, thought to be the best overdrive guitar pedal in the industry and the artists who use it. document.getElementById('cloaka17f65c45c1e19e9ddd55ba5fcfbb716').innerHTML = ''; The clipping diodes define the distortion sound signature, it is built using 2 back to back diodes that shunt the signal to ground, this clipping method gives a hard-clipping sound also used in many other pedals (MXR Distortion+, RAT and Boss-DS1). This big 40dB gain will make the TL072 go into clipping, the signal will hit the power supply rails when the gain is set to high values. The Op-Amp Gain Stage will boost and clip the input signal depending on the position of the Gain potentiometer. The Klon Centaur is a mythical beast in the world of overdrives that has been lost to history for almost a decade. Under the username klondirectsales, Finnegan will sell the new run direct from eBay as he makes them by hand. Klon Centaur Overdrive. The introduction of the Klon back in the early to mid ′90s is arguably one of the most significant milestones in the world of overdrive pedals. Ook zijn er variaties in het circuit om bijvoorbeeld zwaardere distortion te bereiken of een breder of juist smaller tonaal bereik te hebben. The initial idea was to improve the TubeScreamer transient response and the midrange-bass frequencies in order to create a big open sound with a hint of tube clipping: the so-called transparent overdrive. “You know what it is. 3.1 Klon Centaur Input Impedance Calculation. The C15 capacitor will remove any DC from the output signal. A lot of players wanted multi-FX pedals and digital rack units; not boost or overdrive pedals. The Klon Centaur is a Bill Finnegan-designed, hand-made boost/overdrive pedal with almost mythical proportions. In 1995, two of the 1uF capacitors in the signal path were increased to 4.7uF to allow more low frequencies through, and a 15K resistor was added to ‘sweeten’ the midrange. The Resistor R20 and the cap C13 form a low pass filter, attenuating frequencies above 495Hz (fc=1/(2xπxR20xC13)) that accentuates a bit more the mid-hump boost. Er zijn zo’n 8000 stuks van gebouwd. The circuits on all these editions are all the same, but the "Horsie" models are a … Er zijn tegenwoordig Klon kopieën in prijscategorieën tussen 15 en 350 euro op de markt. The default gain of this block is set at unity gain (1). However, since the original KLON Centaur had a “gooped” circuit board, meaning it was coated in epoxy to keep others from reverse-engineering it, it took a while for the circuit to be … As a rule of thumb, the value of this resistor is at least 10 times the value of the resistors that make the virtual ground ( R27 and R30 are 27KΩ). Builder Bill Finnegan has made Klons with both gold and silver casings as well as with an without the Centaur logo (commonly referred to as Horsie or Non-Horsie models). However, there are very few that can match the tone of an original authentic Klon Centaur (from Bill Finnegan & klon-siberia.com) or a Klon "CLONE" from buildyourowntone.com. Uitgangspunt daarbij was dat deze nieuwe uitvoering vrijwel identiek zou klinken maar het pedaal een stuk kleiner zou zijn. Het circuit leent zich ervoor om ook onvervormd een clean signaal te boosten en de klank te “focussen”. My sincere appreciation to D. Pereira, Charles.D, P. Babiak and A. Hofseth for their help with this analysis. In 2008 stopte Finnegan met het aannemen van bestellingen voor de Klon Centaur omdat de bouw van het pedaal te arbeidsintensief was en hij bij een prijskaartje van inmiddels 329 dollar nauwelijks winst maakte. The second op-amp is powered between +18V and -9V, giving a total of 27V of headroom. Dus besloot hij samen met een vriend die veel technische kennis had een nieuw overdrivecircuit te ontwerpen waarbij de klankeigenschappen van ieder onderdeel dagen lang minutieus werd beluisterd en vergeleken tot hij een volgens hem nagenoeg perfect overdrivecircuit had ontwikkeld. This stage will also filter the original guitar waveform tailoring the frequency response. In 2012 bracht Finnegan de nieuwe lijn genaamd Klon KTR op de markt. The gain of the boost/cut band is defined by the formula: The gain on the pass-band or on the boost/cut band could be adjusted following the formulas described before. Klon Centaur Circuit. Thanks for reading, all feedback is appreciated This email address is being protected from spambots. You need JavaScript enabled to view it. Er zijn zo’n 8000 stuks van gebouwd. While you expect its rarity to increase the value, it is hard not to be a little blindsided by JHS Pedals owner Josh Scott listing the first-ever Klon Centaur for $500,000 on Reverb.com. Ondanks deze tactiek liep hij toch tegen een achterstand in de productie aan.
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