Metal Muff Schematic
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Metal muff schematic Continue Ok. Your micrometal clutch is about $50. It got one tone-handle, no topboost and smaller size. I would be really impressed if someone built a metal clutch on a vero and was able to put it in anything less than 1590BB. I really like the charm with diy, but sometimes it's hard to make it worth it. Throwing stones to the bone Swedish heritage. In response to this post, the Gaffled1 micro-metal clutch thing doesn't seem to sound as full-size. The 1590bb will be much better than the size of the 1790ns it currently is. I think 3 groups eq, why do I like the big one. Ok. I'm trying to make a layout to fit 1590bb in the scheme you posted. Throwing stones to the bone Swedish heritage. In response to this post Gaffled1 Awesome, thanks to COMPONENT VALUES MAKE THE SOUND - There is a myth that a transistor type is responsible for the sound of the Big Clutch to be good or bad. Good and bad subjective terms that will differ for different people depending on their musical or gaming preferences, but are actually a combination of different values of all the components in the chain (capacitors, resistors, diodes), and how transistors are biased against the surrounding component values that make one big Muff sound different from the other. The signature Big Muff sound comes from two diode sections clipping in a row in a four-stage transistor amplifier design combined with unique tone control. In the past, real tonal differences are from a combination of individual component values. The older the clutch, the more these values differ from unit to unit, and the newer the clutch, the more they are the same from unit to unit. These are differences that give each Muff its own unique character. TRANSISTORS - There is a lot of hype about some transistors that are more desirable in vintage Big Muffs than others. At the top of this list is the mysterious FS36999 transistor found in vintage V1 and V2 Big Muffs, which were actually 2N5133 transistors with a custom brand. Transistors have amplification measurements called hFE. Technically it is a measure ahead of the current gain rate in DC's current transistors, rather than the profit people refer to when it comes to the level of distortion of the production pedal using the distortion/support handle. The F stands for forward and E means that the transistor connection is in emitter mode. One type of transistor may have a higher or lower hFE than the other, and these values can vary greatly between transistors of the same type. The specifications for the original 2N5133 transistors were in the 60-1000 range. When I started collecting Big Muffs it was accepted that the best sounding vintage units were high hFE transistors in the 400-600 range. When I pulled all four FS36999 transistors out of the exclusive 1973 Big Muff in my collection and measured hFE I found that it ranged from 164 to I also pulled transistors from one of my High Font Green Russian Big Maffs and found that they ranged from 200-250hFE. Here are some other measurements of hFE 2N5133/FS36999 transistors to give you an idea of how diverse they are. 1971 Triangle Big Clutch - No 1: 702, No 2: 632, No 3: 655, No 4: 704 1972 Triangle Big Clutch - No 1: 666, No 2: 286, No 3: 550, No 4: 233 1973 47 Ram Head Big Muff - No 1: 431, No 2: 4: 577, No 4: 4: 425 1973 Violet Ram Head Big Muff - No 1: 164, No 2: 204 No 3: 183, No 4: 161 1973 Violet Ram Head Big Muft - No 1: 169, No 2: 189, No 3: 167, No 4: 193 19 74 White Can Ram's Head Big Muff - No 1: 141, No 2: 168, No 3: 288, No 4: 152 Modern 2N5133 Transistors is not quite the same as 1970s production. Some consider them almost too low for Big Muff, although as indicated, some 1970s 2N5133/FS36999 measure is very low too. 2N5088 or 2N5089 are close modern transistors producing equivalents. The 2N5089 have a slightly higher growth rate than 2N5088. BC549C, BC550, BC239, SE4010, and 2N5210 are some others that also work. Lower gain tranys are said to have a smoother sound than the higher ones get, and higher-get transistors are said to affect the medium and pick up the response, although actually hearing these differences is sometimes not an easy thing. The current winning transistors should not be considered alone, however, because the bias on the amount of profit for each cut-off stage is set by resistors coming from the collector and emitter of each transistor. The current winning effect affects some aspects of the tone if it is very low or very high. Too low and it may not have enough to get to cut off sections to work properly and can be weak or dark sounding. There are other characteristics transistors can affect as well as clarity, raspiness, thickness, volume, and white noise levels. These characteristics can range from transistor manufacturer to manufacturer and vary between old and new transistors of the same type. In the blind test, I couldn't pick one over the other to listen to the recorded samples, and the differences I thought I heard by changing them using outlets were probably just my imagination. The only real difference I noticed was the transistor at the last stage. Different transistors and different hFE values seemed to change the sound in this position, but it's a subtle difference. I believe that the effect of different transistors is minimal, but many pedal builders believe that they have a big impact on sound. This is why many of these screen manufacturers party transistors to sing away the less desirable ones. Electro-Harmonix never screened transistors when they did Big. This may explain some of the wide range of different sounding Big Muffs of the same model, but this diversity actually comes from different circuits used from one production startup to another, and how the value of the component part has changed over the course of the as parts of age. I suggest not too hung up on a transistor type when looking for a vintage Big Muff though. Muff with old 2N5088 or BC239 transistors may sound as good or bad as the one with the old 2N5133 transistors. Other components of the chain are much more important to the tone. If you've never opened your vintage Big Muff to look at transistors on PCB, here's AN INSTRUCTION for taking one apart. ...... Shown left: V1 Big Muff wine chain with ceramic capacitors, carbon composition resistors, and NPN FS36999 Silicon Transistors. Shown to the right are two other vintage silicon transistors used in large maffs, PNP 2N5087 and NPN BC239 CLIPPING DIODES - There were many different types of silicon clipping diodes used. Although the effect is negligible, different types of diodes trim the sound frequencies at the cut-off stages in different ways. Most modern large clutches and clones are made using a common use of 1N4148 or 1N914 diodes, which measure similar values of some diodes found in vintage large, but not all. This probably overlooked the aspect of sound when creating clones of vintage circuits, but the problem is that many of these old diodes had non-standard markings, making it difficult to determine the actual type used, and many of which were marked no longer made. The anterior voltage of the diodes used in the triangle, and the early large Ram's Head clutches range from about 0.5 to 0.6.V. Diodes in the old perf board of the triangle I own measure 0.481 - 0.487V, and diodes in 1971 Large Muff measured 0.560 - 0.572. Diodes in the head 1973 Ram Big measured 0.586 - 0.626. The diodes from the bubble font Russian Big Muff measured 0.571- 0.580. The diodes used in V1 had various markings, such as SYL GD938, or SYL GY925 926, SYL, GY920 or GY819. Most of the diodes used in V2 were unmarked (only black cathode). Some of them were marked 125 (1N125 is a diode of germanium, but these were silicon), and some of the 1975-76 period was 1N925 or 1N802 (grey/black/red stripes) diodes. The diodes used in the V3 and V6 were 1N4148 or 1N914, while others were unmarked. The diodes used in Russian Sovtek Big Muffs production were very different from the U.S. models, all of which were out of production. All in all, they seem to clip higher frequencies than the standard 1N4148 diodes. Red army overdrives and large civil war clutches used Russian types of KD521A and KD521V. The Green Civil War and high fonts and some bubble fonts used KD521A, KD521V and 2D510A. Later, Bubble Fonts and almost all black Russian large clutches used KD522B. RESISTORS - Electro-Harmonix used cheap carbon resistors throughout the 1970s dark brown cylinders with colored stripes), gradually moving to the type of carbon composition (smaller cylinders with thicker ends, and different body colors - tan, light brown, dark brown, red-brown) in the late 1970s and early 1980s. When the Big Big Returned to production in 2000, the carbon composition was re-used, with the rare use of some modern carbon film or metal film resistors (similar to the composition of carbon, but the color of the case is usually blue), appearing in later years.