Jcm 900 valve 2100, jcm 900 valve 2500, jcm 900 valve 4100, jcm 900. Marshall amplification jcm 900 valve series handbook manualslib. The jcm900 amplifier family is a valve amplifier that utilises vacuum tubes in the power amplification circuit, generating a. If i were to choose between these two id go for the 2000 unless i was going for an 80s specific tone and the 900 was a lot cheaper. View online handbook for marshall amplification jcm900 4100 amplifier or simply click download button to examine the marshall amplification jcm900 4100 guidelines offline on your desktop or laptop computer. Bobbin output transformer 2, 4, 8, 16 ohms part no. This two channel dual reverb 100w powerhouse will make you stand out on stage. Marshall jcm 900 2501 50w hi gain master volume mkiii 2 thoughts on marshall jcm900 4100 hi gain dual reverb duane. Although not quite the same tone, the amp was just as good for stage use without mods. Download handbook of marshall amplification jcm900 4100 amplifier for free or view it online on.
Marshall amplification jcm 900 manuals and user guides. It sounds great, though there is some cosmetic damage to the tolex and the speaker cloth. But, i must say again the lp traditional is magic, brings out the best in the 900. To view this site, you must enable javascript or upgrade to a. That was the problem with the plexi it needed to be at high volumes unusable unless in a. Bobbin dat a subject t o change wit hout not ice marshall jcm 900 100 watt guitar amp replacement f eatu res. Jcm 900 is good for jazz, blues, rock, metal etc is an amazing and flexible workhorse amplifier. Related links to official marshall website new tab.
The lack of bottom end in the newer marshall amps jcm 900 s and the jcm 2000s dsltsl come to mind really kill the overall sound of the amps. Marshall jcm900 marshall 1960a marshall jcm900 history. Marshall jcm 900 model 4500 50watt hi gain dual reverb head. Marshall jcm 900 lead series model 1936 2x12 cabinet reverb.
The jcm 900 is, at its core, a typical marshall, i. Free marshall diagrams, schematics, service manuals. To open downloaded files you need acrobat reader or similar pdf. Please read this instruction manual carefully before switching on. I was testing out a jcm 900 and noticed the volume didnt seem very loud. Though they share common ancestry and have similar rear panel functions their. Set of 4 screws, stainless steel, 1 12 long, phillips, oval head, with matching cup washers. I ended up cranking the master and channel volumes and it wasnt that loud. View and download marshall amplification 4100 jcm900 h handbook online. Hendrix thing you need them, but the amp by its self is awesome i play les pauls strats and wolfgangs. Question another question about ohms marshall jcm 900. Service manuals, schematics, eproms for electrical technicians.
They dont help in the sound deptartment, but certainly help marshall s bottom line. With dual channels, a shared 4band eq, and 100 watts of alltube power, youve got an amp that is ready for any gig on any stage. The jcm900 slx signifies marshall s last evolution of the jcm800 master lead series amplifiers. I like the jcm 900 s tone a lot when turned up classic 80s hard rock tone, but the jcm 2000 has better cleans and is much more versatile. To open downloaded files you need acrobat reader or similar pdf reader program. Hey guys my friend is letting me borrow is jcm 900. Fits most all large marshall heads, from the jvm and jtm series from the 60s through the jcm800, jcm900, jcm2000 and jvm series. All knobs on full but bass thats about 40%, and for some riffs preamp 50%. Marshall head back panel stainless steel screws and washers set of 4 for full size heads.
Pdf file icon marshall jcm 900 50w poweramp schematic 79 kb. Even when 900 series hit the market, marshalls heavy od sections were already well known. Marshall 100w jcm900 style transformers by classictone. If he modeled a 900, it probably wasnt the slx and didnt include the 2 separate preamp controls. When stereo mode is selected, the cabinet is split into two 8 ohm halves for use with a stereo power amp. This is a 100w tubeamp 5881 tubes from the nineties. Bring legendary marshall tone to your rig with the jcm900 4100 guitar amplifier head. Marshall amplification jcm 900 valve series handbook pdf. Presence between 3 and 7 depending on what im playing. Unfollow marshall jcm 900 to stop getting updates on your ebay feed. The series was originally comprised of the single channel higain master volume mk iii and the two channel higain dual reverb.
Marshall amplification amplifier user manuals download. Because for me, theres no real marshall, or a marshall with a better sound than another marshall. These cabinets are designed to deliver a big sound for live performances. It has a little problem with the gain knob it buzzed when the knob is up but they can fix it. Marshall amp heaven schematics jtm45 jcm50 jcm600 jcm. Tube amp shoot out marshall jcm 900 vs jcm 2000 vs jvm 205h. This document was uploaded by user and they confirmed that. Theres a book called the history of marshall that has schematics of the marshall amps including the jcm 900 series. I think ken if he is using the marshall jcm 900 50 watt head it has a 4 ohm switch if he is using a 100 watt 4100 its. Database contains 1 marshall amplification jcm 900 manuals available for free online viewing or downloading in pdf.
The jcm 900 models split into two distinct product ranges, the master volume slx and the dual reverb. Marshall jcm900 dualrev 100w 4100 schematic ampwares. For those who wanted a more saturated, pregain type thick distortion without pedals, awesome. To view this site, you must enable javascript or upgrade to a javascriptcapable browser. These amps typically have undersized output transformers, and a resistor instead of a choke. Marshall jcm 900 2501 50w hi gain master volume mkiii. Marshall jcm900 dualrev 100w 4100 service manual download. You will require adobe acrobat pdf reader to view these schematics. Its a great time to upgrade your home music studio gear with the largest selection at. Mar 03, 2020 marshall wanted to spice the series up a bit by offering the user more gain.
The early marshall jcm 900 amp headscombo amps came stock with el34 power tubes. The tech said it had new tubes and bias so i assume it is not a tube issue. Download 365 marshall amplification amplifier pdf manuals. This amp is an all tube 10050 watt head with a 4x12 1960 marshall cab. Jcm900 series 21 mastervol 100w 25000102 mastervol 50w 4102 dualreverb 100w 45000102 dualreverb 50w jtm 900 slx series 21 slx 100w. I played on a 1996 jcm 900 in the store and they want on it 720 dollars. With hindsight, the jcm 900 4102 has its own personality. Marshall amplifiers are known throughout the rock music community for their overdriven tone and the sound levels that they generate. Marshall jcm900 style, 100w laydown power transformer.
Jcm 900 valve 2100, jcm 900 valve 2500, jcm 900 valve 4100, jcm 900 valve 4101, jcm 900. List of the products in the jcm900 series from marshall. Marshall amp schematics to assist you with your amplifier repairs and modifications. Marshall jcm900 dualrev 50w 4500 schematic ampwares. The clean channel dimed sounded great, but the lead channel was useless without an eq pedal in front of it to give it some low end.
Ive been reading for a few days now, but the internet seems to be 50% fact, 50% opinion, and 50% people telling me how much jcm 900s suck. User manuals, marshall amplification amplifier operating guides and service manuals. Respectively it has less features than basic jcm 900, just one channel and no reverb. Marshall jcm900 4100 100w 2channel tube head i tell people the marshall jcm 900 4100 is the single best sounding amp you can buy. It is very similar to the jcm800 except that the preamp is capable of much more gain. User manuals, guides and specifications for your marshall amplification jcm 900 amplifier. Two of the worlds bestselling 4x12 cabinets, famed for their excellent sound. I think it gives it character, and you wont have to worry about giving it its first ding. To ensure maximum flexibility, four of our 4 x 12 cabinets boast a monostereo switching system on the back. It is believed that their line of reasoning behind this decision was to give the people more of what made the initial jcm so popular. Marshall jcm900 dualrev 100w 4100 schematic marshall. I also talk about my favorite tubes for this amp and why i chose them. Marshall jcm 900 model 4501 50watt hi gain dual reverb. Marshall have specialised in the production of valve amplification.
Using these 2 controls together is what gives the slx its unique properties. Marshall amplification 4100 jcm900 h handbook pdf download. A stylish reissue, the jcm900 4100tm is the evolution of the jcm800 adding. An amp built to go on the road and be on the stage with a sound loud enough to fill stadiums. View and download marshall amplification jcm 900 valve series handbook online. Oct 12, 2012 2100 jcm900 master volume 1990 1992, tube guitar amp head from marshall in the jcm900 series. This is a pumped up version of the much more common jcm 900 model, with extra tube on the preamp section. He did this together with technical friend ken bran. Shop marshall jcm900 4100 dual reverb guitar amp head from ams with 0% interest payment plans and free shipping. Apr 21, 2015 a detailed video of the jcm900 or similar biasing process. Marshall jcm900 schematic power amp el34 free download as pdf file.
Ive got a jcm 900 and have also used a jcm 2000 extensively tsl model. Jcm 900 series 21 mastervol 100w 25000102 mastervol 50w 4102. Marshall jcm900 combo and guitars godin lgx, prs single cut, jackson custom, fender stratocaster hh and sss, fernandes the function without any effects. In all the jcm 900 models there are degrees of innovation to give extra high gain, wider tone control and greater connection flexibility to provide y ou with the widest possible sound variations. The tube amp library of information click the link above for tube amp info, schematics, board building information, projects, mods, transformer diagrams, photos, sound clips. When we played reading and leeds, jim marshall s son was there and i told him how much i loved my jcm. Released in january 1990, the jcm900 boasted higher gain and lower noise coupled with the classic marshall tone.
This version of marshall amplification jcm900 4100 manual compatible with such list of devices, as. With the 900 i have recently gotten a powerbrake and have been running it at about 56 on the master and gain about 45 on cha and 1215 on chb, bass 8, mid 5 and treb 45. Marshall jcm 900 model 4501 50watt hi gain dual reverb 1x12 combo. Marshall amplification jcm900 4100 amplifier handbook pdf.
A stylish reissue, the jcm900 4100 tm is the evolution of the jcm800 adding another channel, two reverb options and two gain features. Goal was to take the marshall 800 and turn it into a soldano. Sadly, jim marshall, the guvnor, passed away on april 5th 2012. In addition the incorporation of new circuitry and the unique output valve protection circuit has increased the renowned marshall reliability. Marshall jcm900 4100 hi gain dual reverb september, 2012 november 30, 2017 steve 2 comments. There are dozens of models and each has its own sound. I dont know if this configuration was ever used on any other all tube marshall s, but there are none that i am aware of. An incredible reissue from marshall, the 100 watt marshall jcm900 4100 dual reverb offers dual channels operation with a 4band eq, and all the powerful marshall tone that made the original a favorite with players all over.
We then turned on the jvm sitting next to it and it was way louder. Question another question about ohms marshall jcm 900 2x12 combo and 1960 lead cab. Marshall did make revisions to the jcm 900 amp series over time so the schematics changed over a period of time. Marshall jcm900 4100 100watt 2channel tube head sweetwater. Marshall diagrams, schematics and service manuals download for free. Jcm 900 valve series musical instrument amplifier pdf manual download. I recently found locally on craigslist a mid 90s marshall jcm 900 4102 2x12 combo and its in pretty good condition.