A buddy of mine now has a pawn shop and i dropped by to check it out. Amp schematic with the famous hitachi 2sk4 and 2sj49 mosfets, issue 2. None of the music stores in my town sold tube amps. Marshall lead 100 mosfet model 3210 was a solid state amp made from mid 80s to early 90s. Free marshall diagrams, schematics, service manuals. This same current flows into the gate of each mosfet in fig. This was back in the days before i even knew tube amps existed. I recently picked up a marshall lead 100 mosfet model 3210 made in 1987 and have to say its impressive, especially for being a solid state amp. Fm and vintage modes the tone control is a very effective circuit that can smooth out or enhance upper harmonics, with 12 oclock being about neutral. To the minds and ears of many, the 100 watt super lead heads of the mid to late 1960s are the holy grail of great rock tone.
The mosfet is a really good solid state amp just as others have said, it sounds very much like a valve jcm800. It sounded a bit dark and dingy at first but i recapped it and it came back to life. These terminals are known as the gate g, the bulk b, the drain d, and the source s, and the voltages present at these terminals collectively control the current that flows within the device. I ended up getting rid of it because it didnt have enough clean headroom. Download 365 marshall amplification amplifier pdf manuals. Congratulations on your purchase of the with extended bottomend response, the first channel is the overdrive mode capable of clean boost compcut or more distorted overdrives. Marshall jcm800 lead mstvol 100w 2203 schematic marshall jcm800. For this, we need two more terminals source s and drain d, and a potential across them to control the.
Reverb is a marketplace bringing together a widespanning community to buy, sell, and discuss all things music gear. Marshall diagrams, schematics and service manuals download for free. Inside the beast marshall mosfet 100 reverb youtube. Basics of the mosfet the mosfet operation the experiment the mos transistor operating regions of the mosfet themostransistor once the threshold has been crossed, we need to make the electrons move, i. Tintronics completed the jlead forming of a mosfet transistor, which is used in a highefficiency switching application for a military client. The best advice that i can think of is to crossreference the different 100w mosfet schematics one can find on the net and compare them against the circuit, and draw the conclusions from that. Marshall lead 100 mosfet solid state guitar amp head 1986. I bought a used marshall lead 100 mosfet in 1990 i believe. I always avoid equipment discussion as i found it boring, but those old marshalls including mosfets. Fanpage of the best solid state amp marshall ever made. This is not tube amp but very nice to make some tone that i like, and its not so expensive for 100. Also featuring an excellent sounding reverb, lineout, 2 separate effects loops, and a. This head is great for dialing in that 80s tone if you like what you see please. This is not tube amp but very nice to make some tone that i.
Wu,uc berkeley the nmos capacitor electrostatics charge vs. Marshall model 3210 lead 100 mosfet head 1980s reverb. I recently came to own a marshall mosfet lead 100 head model 3210 that doesnt really work, and im looking for any assistance i can get. We fabricated some mosfets satisfying vb,maxlgd 200v. I can get a marshall lead 100 mosfet head for a small amount of money. Because itd be great not to drag a combo everywhere me and my band go to play. Marshall 3210 lead 100 mosfet in 1984, marshall launched a 34 scale line of amps, consisting of the 2204s a 50w singlechannel amp, a dual channel solid state preamptube power amp hybrid the 30w artist 3203 and this one the 100w mosfet model. Mosfet power, single, nchannel, so8 fl 30 v, 93 a features. High voltage, high efficiency mosfet rf amplifiers. Metaloxide semiconductor fieldeffect transistor mosfet the metaloxide semiconductor fieldeffect transistor mosfet is actually a fourterminal device. Generally the 50 or 25 volt value is a good place to start. By varying the value and the polarity of the bias applied to the top electrode of a mos structure one can drive the silicon underneath it into enhancement all the way to inversion. The mosfet uses a different type of gate mechanism exploiting the properties of the mos capacitor. I had never heard of it and the serial number put it as a 1990.
Its good and all, but it takes alot of space, and it weighs like a cement mixeror a fender twin reverb head. We have recently found that this circuit can be modified as shown in fig. You will require adobe acrobat pdf reader to view these schematics. The b cabinet is a bit rough but it sounds better t. Selling for a friendmarshall lead 100 mosfet solid state guitar amp head 1986 black tolex weight25lbs heres a 1986 marshall lead 100 mosfet head, often regarded as and imho the best and most tube sounding solid state marshall head. In addition to the drain, gate and source, there is a substrate, or body, contact. It delivers 100 watts of solidstate power at 4 ohms. Possibly the best solid state marshall amplifier ever produced. The maximum breakdown voltage vb,max of the mosfet without a field plate is 996v at a gatedrain distance lgd of 9.
Marshall 5215 mosfet 100 reverb 1986 1991 5215 mosfet 100 reverb 1986 1991, solidstate combo guitar amp from marshall in the mosfet series. It was one of marshall earliest solid state amplifies and predates the. Lecture 15 the mosfet university of california, berkeley. Im curious what you guys think of the lead 100 mosfet. Marshall amplification amplifier user manuals download. What caught my eye was a marshall head sitting in the back. Leadfree applications high efficiency synchronous rectification in smps 8. I am just wonder what foot switch the marshall lead 100 mosfet uses. Marshall mosfet lead 100 head manual rockstarfreesoft. I had a college roommate, circa 1987, who had a lead 100 mosfet head and the 4 x 10 slant cab. Marshall mosfet 100 reverbtwin 100w 52 schematic marshall mosfet. It includes a marshall 1965a cabinet with 4x10 gl35s and a marshall 1965b cabinet with 4x10 gl35s.
Data sheet silicon transistor 2sc3357 npn silicon epitaxial transistor power mini mold description package dimensions the 2sc3357 is an npn silicon epitaxial transistor designed for. The epflekv mosfet model equations for simulation 2 mbclceftfk epfldeleg 29. The sound and overall quality of this amp is, in my opinion, the best. Nores series operation of power mosfets for highspeed. User manuals, marshall amplification amplifier operating guides and service manuals. Clearish sound at the beginning and then some gain. The marshall lead 100 mosfet model 3210 amp was produced in the mid to late 80s. Today we check out my marshall lead 100 mosfet amp head. My local music store i do business with currently has one of these priced at 250, and the owner said hed give me a deal for 200 since ive always bought there i told him if i did decide to buy, i would be in tomorrow morning first thing, so my word is on crunch time. I did some research and found it was a solid state lead 100 mosfet, 3210, 100 watt, 2 channel amp. The clean section is only solidstate, whereas the tube drive section delivers exactly what it says tube like tone out of a hybrid head amplifier. Documents, presets, manuals marshall 3210 lead 100 mosfet 19841991 3210 lead 100 mosfet 19841991, solidstate guitar amp head from marshall in the mosfet series. The marshall lead 100 mosfet has a solidstate power amplifier with a tube preamp through a 12ax7.
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