Dont be fooled by other jtm45 kits that use el34 tubes. Jtm45 phenolic turret boardpredrilled brown modulus. To the people who are dealing with audio thanks for visiting mableaudio. Triode, usa customer service mf 9am4pm ct 18007743201 email us anytime. With turret board, pointtopoint construction, quality components, and just a touch of american upgrading, this kit is ready to become your sound. Since then, connoisseurs of tone have sought out rare original jtm45s from the 60s. It was an instant hit and launched a whole new generation of groundbreaking guitar players and sounds. Because the primary to secondary voltage is a turns ratio the voltage on the secondary will change. I took my jtm45 clone its an early 60s spec to my amp tech complaining that it was very dark sounding.
British style jtm45 faceplate suitable for marshall brand amplifiers to be used with the british style jtm45 chassis suitable for marshall brand amplifiers. Amp find it virtually indestructible and opportunity because a reasonable price without being either in the most cheap. Jtm black flag faceplate for jtm45 chassis modulus uk guitar. A a metroamp jtm 45 kit and gpm 45 custom build george metropoulos is no stranger to the world of marshall amps or to the online ampbuilding community. It seems to have the circuit of a jtm45 with the power supply of a jtm50. Someone else whos more of an expert can verify that i had the stock jtm45 ri for quite some time since the early 90s and then got it modded to the old vintage values, and postmod. See the plexi palace jtm45 page for some great jtm45 pictures. Here is the components explained in the tt jtm45 layout lets start from the right, where also the signal begins.
The power supply caps are all wrong, and the feedback resistor is only 5k6, instead of 47k or. This amp was made in 1962, not quite in the first 200 but close, made in late 1962 this amp was hand built by jim marshall himself, then later modified by. By including gz34 valve rectification, as found in the original, marshall has ensured a faithful. Marshall jtm45 mk i june 9, 2011 november 30, 2017 admin 2 comments. You can think of this as a sort of 100w jtm45, but with solidstate rectification and unique filtering for an amplifier of this power. Marshall jtm45 2245 plexi mkii front faceplate ebay. I dont think there was ever an original not a reissue jtm45 that had el34s. Im having trouble finding high resolution photos, and id prefer pdf. I wouldnt take much to set the jtm45 schematic and jtm50 schematic. The marshall jtm45 is the first guitar amplifier made by marshall. Was too bassy after completion so split the v1 cathodes with a couple of 0. The voltage will change a little as you adjust the bias current so check it a few times and recalculate as needed. I had my tech add a master volume to my ceriatone jtm45 and it works great for the first 75% of the volume pot. Build your own clone classic brit 45 kit instructions.
Ive looked at various schematics and layouts, but need some help to identify it. The third lugs of the mv take the blue cable back to the bias. It uses two 50 watt output transformers in its power section, just like the original did in 1965. While reading about different mods people will of course refer to the function of components instead of how they are marked in a specific layout. A great paper layer wound output transformer with 8k ohm primary for use with kt66 tubes. Do not attempt to do anything to your amp while it is plugged in other than take voltage readings as. Similar to the one supplied with the metroamp 1969 kits and featured in their 100w build instructions except made of steel. Marshall amplification jtm45 user manual pdf download. Namm 12 marshall amplification 50th anniversary jtm1, jmp 1, jcm 800, dsl 1, and jvm 1 demos duration. Marshall heaven schematics shown in blue are missing from the archive.
First produced in 1963, it has been called a seminal amplifier, and is praised as the. I have posted this to the uad forum and kvr, as well, and will post the results as soon there are 20 or more responses between all the forums. This section will help explain how changes in wall voltage affect plate voltages. It does not include non essential items like tube retainers, faceplates or knobs. I do not remember the name of the builder nor do i know if it was a kit. To reflect this the jtm45 panels were changed to jtm50 panels. The mix resistors mix both channels together after the first triode sections were originally 270k ohm on the early models. The list is roughly in the order you will need the parts. The jtm45100 limited edition run of 250 is an allvalve, 100 watt head and two 4x12 cabinet setup.
The pdf files can be printed to scale ensure the pdf printer is set to print to scale. The di was a custom cinemag run into a universal audio apollo preamp with no unison plugin. And like all of our kits, we dont just hand you a schematic and wiring diagram and throw you to t. Cpc45m jtm45 style 18 watt and 35 watt versions carl. You may need to lightly sand the back of the potentiometers to be able to solder the bus wire correctly. The required quantities are shown next to the default items.
It is pre drilled with 8 rows of 27 holes which makes it perfect for marshall jtm45 style projects. Jtm45 phenolic turret boardpredrilled brown this is brown phenolic board used for turreteyelet style circuit boards in vintage styled hand wired amplifiers. Limited edition offset amplifier and matching 4x12 cabinet. It was the very first appearance of what has now come to be known as the 100 watt stack. Transformers should always be installed by a professional electronics technician since there are high voltages involved and may result in serious physical harm to yourself, the transformer andor your equipment if installed incorrectly. The very first marshall amp, made back in 1962, was the jtm45. To celebrate the jtm45, i got together with my sunday afternoon amp group, after contacting a handful of respected amp builders who sent us their versions of the amp. Jcm800 style front faceplate mirrored select your colour. Test your printer by printing a layout drawing and checking the scale of the layout with a ruler. The very first marshall style amp, made back in 1962, was the jtm45.
The jtm45bluesbreaker is one the most talked about and loved vintage amps. I decided to do a jtm45 clone this time around as i needed a really good clean amp that would take pedals nicely. This is an amplifier made famous by jimi hendrix, but was also invokes tones of early clapton, the young brothers, and other classic rock tones. Jtm45 reissue manual the very first marshall amp, made back in 1962, was the jtm45.
British style jtm45 faceplate suitable for marshall brand. Of course you can always print these out yourself with your own printer. You can pretty much get the gist of how i build amps from my other blogs so i am not going to do a painful step by step. It was an instant hit and launched a whole new generation of groundbreaking guitar players. Brushed gold with black text front engraved default choice brushed. Build your own clone classic brit 45 kit instructions revision 1. It is easy to use and provides immediately a good sound. I think its been modded, as i havent found anything that looks quite like it. Tube amplifiers contain high voltage that can cause injury and even death. Jtm45 style front faceplate select your colour modulus. The amp is running kt66 valves, and rather than change to el34, 6l6 or 6v6, all of which the amp can run with a rebias of course. The fender bassman used a 12ay7 as the input tube, but the jtm45 was fitted with a 12ax7ecc83, which has higher gain. We have been doing business with famous companies in usa,japan,germany,australia,italy and netherland.
Now they shall seek no more, thanks to this meticulously accurate reissue. However, i havent found anything that describes how it sounds compared with a jtm45. Onlineshop and many other items which you might need for this amp like faceplates and headshells. The jtm45 is a playable amp because of its power and rsonnable a vintage look that requires serious. However, on the last of these amps the aluminium chassis was strengthened by block ends cast in aluminium also found on late jtm45s. Faceplate backplate set for jtm45 faceplate and backplate set for jtm45 chassis. Our version of the classic marshall jtm45 amplifier, circa 1965. It is also great for general replacement, new oem amplifier builds and d. The first 100 watt amps known today as jtm45100s used jtm45 plexi faceplates and white super 100 amplifier backplates. The classic brit 45 comes with everything you need to build a pointtopoint, handwired version of the original marshall jtm45.
Please use extreme caution and common sense when building this kit. The 19651967 marshall super 100 amplifier aka jtm45100. The ceriatone jtm45 is yet another amplifier drenched in vintage blues, blues rock, classic rock, and aboutanythingyouwanttothrowatit goodness. In the fall of 1962 the marshall jtm45, which is based on the fender 5f6a, saw the light of the day. Now the classic jtm45 is accessible to all who enjoy its glassy, clean tone and fluid, warm sustain. Dynaco stereo 70 upgrade style punched chassis made in usa. Triode electronics jtm45 layout speaker output notes.
The jtm45 marshalls first amplifier was jims version of leo fenders 5f6a tweed bassman amplifier. Seamless transition from clean to overdriven tones. Item marked with a yellow m are the parts used in the metroamp build instructions. A check list for the parts you need for your jtm45 build. All of these faceplates are consistent with their respective chassis layouts.
Like their predecessors, t hese amps had aluminium chassis, jtm45 faceplate, and the white super 100 amplifier back panel. Claptons untouchable playing with the bluesbreakers, angus and malcom young grinding out acdcs early records, gary moore, joe perry on recent tours and countless others prove why this amp really is the cream of the crop. Unlike previous assembly manuals, we have designed this manual for the more advanced builder in mind. Like it had a layer of molasses over all the notes. Such as tubes,tube sockets,capacitors,resistors,tag board,meter,pot,knob,feet,chassis and so on to get you started. Perfect fit for our jtm45 style chasssis or can be used as a template for drilling your own blank chassis.
Your pdf shows stereo shielded cables with the shields tied to the third lugs of the mv. This is a great output transformer for jtm45 style amps. The marshall jtm45 amp head is a lovingly created reproduction of jim marshalls first amplifier. In 1962, in a small shop in hanwell, jim marshall created and began selling the first marshall amp, a jtm45tm. First produced in 1963, it has been called a seminal amplifier, and is praised as the most. We are proud to offer products manufactured by metroamp. The dxf file can be opened and edited using a vector based program allowing. Heres a blind test between a jtm45 handwired reissue vs. Jtm 45 style chassis for tube amp kit made in usa matching steel chassis for our jtm45 tube amp kit.
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