Purchased some nice components from valvestorm, need a. Was too bassy after completion so split the v1 cathodes with a couple of 0. This is a great output transformer for jtm45 style amps. I wouldnt take much to set the jtm45 schematic and jtm50 schematic. Normally, this head has el34s in it, but we borrowed the genelex kt66s from the mojave and biased the amp to accommodate them. Ive already carried out all the raw sewage mods marshall jtm45 and 62 bluesbreaker reissue modifications apart from changing the transformers. 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.
Seamless transition from clean to overdriven tones. Build your own amp cabinet using the these detailed plans downloadable in pdf format. Since i cant afford a real or reissue jtm45, im considering buying a kit and and a few more mods are listed in their instruction manual that i added as well. It made sense to us to use kt66s, because they were what the amp was designed for. The following guidelines should be taken into account. I dont think there was ever an original not a reissue jtm45 that had el34s. This amp sounds awesome,the build is solid turret board with no issues and is gig ready. Jtm45 board components explained building guitar amplifier. Apr 21, 2009 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. Brushed gold with black text front engraved default choice brushed silver black text front engraved gold plexi black text rear engraved white black text front engraved. The 19651967 marshall super 100 amplifier aka jtm45100. The required quantities are shown next to the default items. The mix resistors mix both channels together after the first triode sections were originally 270k ohm on the early models.
The latest of their true reissues is the 2245thw thats based on the jtm45 head with tremolo and just happens to be identical to the circuit of the muchballyhooed 1962hw bluesbreaker combo. Limited edition offset amplifier and matching 4x12 cabinet. The jtm45 is a playable amp because of its power and rsonnable a vintage look that requires serious. In fact, the offset head was the first version of the jtm45 my company made and only a mere handful of these heads and cabinets were ever constructed. The first 100 watt amps known today as jtm45100s used jtm45 plexi faceplates and white super 100 amplifier backplates. Marshall heaven schematics shown in blue are missing from the archive.
The only thing jtm45ish about robert hulls design is the tube rectifier. Jtm45 style front faceplate select your colour modulus. Highly responsive to different guitars, pickups, pedals, even tubes. British style jtm45 faceplate suitable for marshall brand. A check list for the parts you need for your jtm45 build. So far i have done jtm50 faceplate and those rearplates. If you need a custom faceplate, panel, bracket or box we make it. The first channel is voiced for a high treble response with the second channel voiced. Summary of contents for marshall amplification jtm45 page 2 1962, the very year in which marshall amplification was born. Jtm45 ri schematic marshall jtm45 the marshall jtm45 reissue is a great sounding amp. Like it had a layer of molasses over all the notes. When i have a bit more time ill list what the tubedepot kit used and what the real jtm value was. The third lugs of the mv take the blue cable back to the bias supply, not the ground.
Dimensions are my take on the bluesbreaker nontrem amplifier. 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. The knob on the lower right input jack is a master volume. Jtm45 style 45 watt i prefer to use gibson vintage reissue 5011 strings on gibsons because i. Original 1965 jtm45 to get our ears accustomed to the jtm45 sound, we began by firing up our 65 head with a les paul. Its a great time to upgrade your home music studio gear with the largest selection at. Feel free to experiment with different tubes of the same type in your amp, though. On, sponsored content refers to articles, videos, or audio recordings that are produced or curated by an advertiser but that premier guitar is happy to share alongside our own editorial content due to the sponsored contents educational, musical, or entertainment value. View and download marshall amplification jtm45 user manual online. My goal is to create jtm45, jtm50 and jmp50 plexi frontplate replicas as well as jtm50 and jmp50 rear plates.
I took my jtm45 clone its an early 60s spec to my amp tech complaining that it was very dark sounding. Marshall amp heaven schematics jtm45 jcm50 jcm600 jcm. Marshall jtm 45 style faceplate set front back 5252101. Triode, usa customer service mf 9am4pm ct 18007743201 email us anytime. Mar 09, 2015 amp i built, loosely a jtm45 but with 1. Best marshall amp i have played however was a jtm45 replica made by gartone in i had to undo a mod and there are a couple holes in the back panel but its i know jeff beck uses the marshall 20watt reissue as one of his stage amps. The fender bassman used a 12ay7 as the input tube, but the jtm45 was fitted with a 12ax7ecc83, which has higher gain. Namm 12 marshall amplification 50th anniversary jtm1, jmp 1, jcm 800, dsl 1, and jvm 1 demos duration. You may need to lightly sand the back of the potentiometers to be. The jtm45bluesbreaker is one the most talked about and loved vintage amps. It was an instant hit and launched a whole new generation of groundbreaking guitar players. Item marked with a yellow m are the parts used in the metroamp build instructions.
Free cabinet plans modulus uk guitar amp parts and kits. Single gang, 1 port single gang, 2 ports double gang, 4 ports the lj6 style offers. Any changes in the configuration must be performed by a qualified professional. Please read this instruction manual carefully before switching on. We fired them all up alongside an original and a reissue jtm45 to take a listenand to enjoy one of the best amps ever designed. It is pre drilled with 8 rows of 27 holes which makes it perfect for marshall jtm45 style projects. Primarily intended for jtm45 marshall and variants. 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 jim as well. Do not attempt to do anything to your amp while it is plugged in other than take voltage readings as. The only thing jtm45 ish about robert hulls design is the tube rectifier. Metropoulos kit boutique jtm 45 ampmarshall plaque logometiculously hand wired beautiful headkt66 power tubes12ax7 preamp tubes 5ar4 rectifier tubeworks excellentlimited studio use, smoke freenever giggedphotos show the great conditionid call it mint except for the small separation of tolex on.
I had my tech add a master volume to my ceriatone jtm45 and it works great for the first 75% of the volume pot. Sponsored content is clearly labeled everywhere it appears, and premier. Like their predecessors, t hese amps had aluminium chassis, jtm45 faceplate, and the white super 100 amplifier back panel. You can think of this as a sort of 100w jtm45, but with solidstate rectification and unique filtering for an amplifier of this power. The list is roughly in the order you will need the parts. Build your own clone classic brit 45 kit instructions. Please use extreme caution and common sense when building this kit. See the plexi palace jtm45 page for some great jtm45 pictures. Cat5e pdf downloads com face plate amp, buy various high quality cat5e face plate amp products from global cat5e face plate amp suppliers and cat5e face. Is there an easy mod to make the bass control a bit more usable. Marshall handwired series 2245thw head and 1960ahw.
In the fall of 1962 the marshall jtm45, which is based on the fender 5f6a, saw the light of the day. Purchased some nice components from valvestorm, need a few more but for the most part its almost there. 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. The frontrear faceplates are brushed gold effect acrylic. The font ive used is london underground with a slight modification for the rear plate letter m is different. Diy jmpjtm chassis, faceplate blueprints metropoulos forum. With a mercury universal voltage primary power transformer. Onlineshop and many other items which you might need for this amp like faceplates and headshells.
Apr 21, 2009 original 1965 jtm45 to get our ears accustomed to the jtm45 sound, we began by firing up our 65 head with a les paul. And like all of our kits, we dont just hand you a schematic and wiring diagram and throw you to t. Thank you for the purchase of your ceriatone jtm45 guitar amplifier. Ive attached pdf files of my work as well as tazin 50w chassis pdf i hope he doesnt mind. This article tries to give an overview over the early marshall 100 watt amplifiers by piecing together available information and shedding new light on transitional models from 1967. Tube amplifiers contain high voltage that can cause injury and even death. The third lugs of the mv take the blue cable back to the bias. Now the classic jtm45 is accessible to all who enjoy its glassy, clean tone and fluid, warm sustain. This is a part in the amp that doesnt need shielded anyway. Amp chassis in guitar amplifiers for sale in stock ebay. Here is the components explained in the tt jtm45 layout lets start from the right, where also the signal begins. Front panel functions the jtm45 os features four inputs, two per channel.
Marshall amplification jtm45 user manual pdf download. However, on the last of these amps the aluminium chassis was strengthened by block ends cast in aluminium also found on late jtm45s. Build your own clone classic brit 45 kit instructions revision 1. Im looking to reduce the amount of bass on my jtm45ri. It is also great for general replacement, new oem amplifier builds and d. Jtm45 reissue manual the very first marshall amp, made back in 1962, was the jtm45. Switch 1 on the back is for going between a tube or solidstate rectifier i took the tube out because i pref. Marshall handwired series 2245thw head and 1960ahw cabinet. A great paper layer wound output transformer with 8k ohm primary for use with kt66 tubes. Dont be fooled by other jtm45 kits that use el34 tubes. 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. Marshall jtm45 4065 watts all dimensions are nominal jtm45rip jtm45rip. 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. Amp find it virtually indestructible and opportunity because a reasonable price without being either in the most cheap.
The marshall jtm45 amp head is a lovingly created reproduction of jim marshalls first amplifier. The 3m volition uk lj6c faceplate range can be loaded with 3m k5e, k6 or k10 jacks to provide the following con. The classic brit 45 comes with everything you need to build a pointtopoint, handwired version of the original marshall jtm45. Will also be suitable for any amplifier chassis of these dimensions. Do not obstruct ventilation grille and always ensure free movement of air around the. When it comes to output transformers for the jtm45 amp. The vintage sound marshall jtm 45 style faceplate set front back 5252101 marshall jtm 45 style faceplate set front back. It is easy to use and provides immediately a good sound. The ceriatone jtm45 is yet another amplifier drenched in vintage blues, blues rock, classic rock, and aboutanythingyouwanttothrowatit goodness. Jun 17, 2009 so the korg rep sent it to me as a pdf file.
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