A series effects loop with level controls lets you connect and match their floor pedals or rack effects. Jcm 600 series 6000102 rev chanswitch 60w jcm 2000 series dsl50 50w dsl100 100w dsl201 20w dsl401 40w tsl6060102 60w tsl10022 100w vba400 series bass 400w 90s reissues 1959x super lead plexi 1st 100w 1959slp 2nd 100w 1962 bluesbreaker tremolo 45w 1987x superlead plexi 50w 2203 jcm 800 100w valvestate mki series 80018010 v10. I was trying to look into more information on this online but could not find any so here i am, the marshall jcm 900 mkiii higain 2500 has a footswitc. That is why many people still used distortion and overdrive pedals with that amp. Functionally, i think theyre a great amp if you like a single tone and want to stomp on a switch. Marshall jcm 900 model 4500 50watt hi gain dual reverb. Another i would look at specifically with a jcm 900 is the original marshall guvnor pedal the black one with colored knobs. Jan 12, 2015 a bit noisy perhaps when cranked a bit more. Today i hit a chord and went to plug patch cord into the effects loop. When abed with the marshall jcm 800s, the b channel on the 900 sounds virtually identical. Marshall jcm900 4100 the uks biggest marshall dealer. The early marshall jcm 900 amp headscombo amps came stock with el34 power tubes.
Sometimes it will cut in and out, but when i push in on the ends of the patch cord, it comes back. Dual master volumes, standard eqpresence controls, standard alltube preamp gain, secondary diode clipped gain that is out of the circuit if unused. Jcm 900 effects loop question amps harmony central. Download the marshall code factory presets jcm 800 reverb patch for all marshall code amplifiers created by admin. Marshall jcm900 alltube combo guitar amplifier for sale. The difference is that the jcm 800 gets louder at a lower setting, but much harder to control. Marshall amplification is a british company that designs and manufactures music amplifiers, speaker cabinets, brands personal headphones and earphones, and, having acquired natal drums, drums and bongos. These amps are an interesting transition model between the jcm800s and the later jcm900 slx.
On the first one it turned out to be poor contacts on the effects loop. This was the dual channel high gain amplifier after the jcm 800. That was the problem with the plexi it needed to be at high volumes unusable unless in a large venue to get. View and download marshall amplification 4100 jcm900 h handbook online. The 900 gets very loud, but you twist the knob more to get there. Its the rarer el34 version of the already hard to find slx model so i couldnt resist it. The marshall models jcm 900 mkiii high gain master volume series were made for only two years 9092, more rare then the dual reverb models. Oct 06, 20 these amps are an interesting transition model between the jcm800s and the later jcm900 slx.
Although not quite the same tone, the amp was just as good for stage use without mods. The jcm 900 effects loops is a series design with an opamp driving and recovering it. Theres a book called the history of marshall that has schematics of the marshall amps including the jcm 900 series. Marshall amplification 4100 jcm900 h handbook pdf download. Another players favourite, the jcm900 4100 allvalve 100 watt marshall head is available once again. This cord is of appropriate gauge and physical thickness for application in most medium to large guitar amps with hardwired power cords fender, for example. The secondary gain is very useful and sounds sweet, and you can crank the pre amp then turn down the volume. Jan 08, 2008 the early marshall jcm 900 amp headscombo amps came stock with el34 power tubes. This amp has a clean channel and a channel saturated. Cord length is an extralong 12 feet, cord thickness is 0. The jcm 900 range use high quality 5881 output valves x2 in 50 watt models, x4 in 100 watt models for. All the settings remains the same on the amp and guitar thruout the test. Effects loop level control adjusts the level of the effects loop from 10dbv.
Detachable power cable included, speaker cable included. Some effects such as distortion and compression are best suited to connection via the front panel input as opposed to the loop. I sold it and bought a 2205 jcm 800 the newer ones from the mid 80s which i have and play up to today. Call gak now for marshall info, advice and the best prices on the marshall jcm 900 01273 665400.
Find marshall jcm 900 and marshall jcm 2000 from a vast selection of guitar amplifiers. Marshall jcm900 4100 100watt 2channel tube head sweetwater. Although models 1959 and 1987 had been in production since 1965 and the 2203 and 2204 had been in production since 1975, they were redesigned and introduced as jcm800 amplifiers in 81. Jcm 900 valve series musical instrument amplifier pdf manual download. In the 1990s, marshall updated its product line again with the jcm900 series. They have 8 knobs, two preamp gains which are always on, and two master volumes which are switchable via footswitch. Known for its great tone and reliability, the jcm900 range has won many fans with its incredible versatility.
Found on a variety of marshall amps, including most jcm800, jcm900, jtm30 series, jtm60 series, jcm600 series, 9001 and 9004 preamp, the early valvestate models 8010, 8020, 8040, 8080, 8100, 8200, 8240, 8280 and the earlier mg series versions as well as other models. Effects loop level, send, return, line output recording compensated, direct. The jcm 900 is, at its core, a typical marshall, i can assert that without hesitation. Id like to put the 2x12 on top of the 4x12 and have all 6 speakers firing. Marshall amplification is a british company that designs and manufactures music amplifiers. I put a patch cord in the effects loop and it increased the volume a little and actually gave the amp a lot more punch. The jcm800 series models 2203, 2204, 2205 and 2210 is a line of guitar amplifiers made by marshall amplification. But is there something that still allows the use of effects in that loop. Jan 03, 20 marshall jcm 900 effects loop mod test whosthefuckinglion. The jcm 900 dual reverb combo is a 100watt lamps 100%. View and download marshall amplification jcm 900 valve series handbook online. Manuel utilisateur en avis dutilisateurs donner mon avis 21 02 2019 wood38 sur marshall jcm900 4100. It kind of has the 900 tone already and would add another option for additional drive and boost.
For sale one marshall jcm 900 50w mkiii high gain combo guitar amp model 2501with stock speaker celestion g12h100. Because for me, theres no real marshall, or a marshall with a better sound than another marshall. Theyre cheap as hell, and if you put an ep booster at the front of your effects chain and a mxr 10band eq in the effects loop, you can do wonders with the tone. I agree with the mkiii 2100 i used to own i jumped the effects loop with a patch cable if i wasnt using any effects in it. Fans of pedalboards and other effects pedals wont be disappointed either, because the tone is excellent. The signal goes through the opamp whether something is plugged into the effects loop or not. Whatever style of rock you play the 4100 will you tonal flexibility without compromise. Feb 25, 2011 tube amp shoot out marshall jcm 900 vs jcm 2000 vs jvm 205h vs splawn supercomp duration. There is a slight tear at the bottom in the center on the exterior. Marshall jcm 900 effects loop issue seymour duncan.
Unfollow marshall jcm 900 to stop getting updates on your ebay feed. Marshall marshall jcm900 100 watt guitar head long. You will still have control over the levels as explained later. It was founded by drum shop owner and drummer jim marshall, and is now based in bletchley, milton keynes, buckinghamshire marshall s guitar amplifiers are among the most recognised in the world. Download the marshall code factory presets jcm 800 delay patch for all marshall code amplifiers created by admin. It was founded by drum shop owner and drummer jim marshall, and is now based in bletchley, milton keynes, buckinghamshire marshalls guitar amplifiers are among the most recognised in the. Marshall code factory presets jcm 800 reverb patch for. Jcm 900 valve 2100, jcm 900 valve 2500, jcm 900 valve 4100, jcm 900 valve 4101, jcm 900. Marshall amplification jcm 900 valve series handbook pdf.
Jcm600 series 6000102 rev chanswitch 60w jcm2000 series dsl50 50w dsl100 100w dsl201 20w dsl401 40w tsl6060102 60w tsl10022 100w vba400 series bass 400w 90s reissues 1959x super lead plexi 1st 100w 1959slp 2nd 100w 1962 bluesbreaker tremolo 45w 1987x superlead plexi 50w 2203 jcm800 100w valvestate mki series 80018010 v10. I unplugged the patch cord to see what happens, and it cuts in and out like nuts. These amps were fitted with four celestion g12m bass 55hz speakers. Follow this product to see new listings in your feed. Jcm900 handbook 1 marshall amplification plc denbigh road, bletchley, milton keynes, mk1 1dq, england. I just got a 50 watt jcm 900, and it sounds great, but it only gets full volume when the effects loop is engaged. Although the jcm 800 had great tone like the plexi, it lacked the needed breakup for metal, neo classical rock, fusion and other heavy styles. Jcm 900 valve 4100 dual reverb, jcm 900, 4100 dual reverb. One thought on marshall jcm 900 2501 50w hi gain master volume mkiii scott olson. I run it through an avatar cab with a vintage 30 60 hellatone 30 60 combo. Nothing perks up the tired looks of a roadworthy marshall like a. Marshall jcm 900 effects loop mod test whosthefuckinglion.
Now you need to set up your patch to make use of the effects loop. British amps like marshall and hiwatt, typically has lots more mid range and. Marshall also updated the cosmetics of the amp with a control panel that spanned the entire width of the cabinet with jim marshalls signature, a black cloth grille, and a much larger script marshall logo. Marshall amps marshall origin 50w head w fx loop and boost mori50hu. The 21002500 mark iiis are essentially jcm800 22032204s with added diode clipping controllable via a knob on the front panel and an effects loop. The jcm800 name came from the license plate of jim marshalls car at the timethat stood for his initials james charles marshall.
Question another question about ohms marshall jcm 900. Marshall jcm 900 mkiii 2501 50 watt combo 1991 reverb. If this ad is up on the site, the amp is still available. Stay away from the 900 s if you can, the older jcm 800s are great and the newer ones 2205, 2210 are good, too. Is in great working condition, and still slams with volume if you choose to do so. The tone of the 900 is thin and fizzy and gets covered by the direct, tight and ripping tone of the 800. Never owned a 900, but i know a great trick, put a patch cable between the fx loop send and return. Marshall did make revisions to the jcm 900 amp series over time so the schematics changed over a period of time. Marshall jcm 900 2501 50w hi gain master volume mkiii. Marshall jcm 900 2501 50w hi gain master volume mkiii february 14, 20 november 30. Tube amp shoot out marshall jcm 900 vs jcm 2000 vs jvm 205h vs splawn supercomp duration. This version of the marshall jcm900 includes a series effects loop with true. The featured effects loop also allow you to utilize the classic built in boss effects. Jcm 900 higain master volume mkiii model 2100 chilltone.
The jcm900 slx uses a dc power supply to heat the preamp tubes. Boss gt10 4 cable method demo with the marshall jvm 205h duration. Marshall amp heaven schematics jtm45 jcm 50 jcm 600 jcm. It was one of the first all transistor marshall combos. I used to have one of those and im still kicking myself selling it for cheap. Marshall jcm 800 lead series 1936 2x12 watt cabinet marshall jcm 800 lead series 1936 2x12 watt cabinet is up for sale. I love this amp but i noticed it wasnt as loud as my dsl50 or my jcm800. Marshall code factory presets jcm 800 delay patch for. Channel a has been voiced for a sparkling clean on lower gain settings, building up to a raunchy crunch wh. Jcm 900 model 4500 50watt hi gain dual reverb head.607 1579 1253 835 579 586 536 403 965 558 1377 1628 933 994 11 1067 465 1430 827 680 1226 1025 330 1314 1016 746 1467 1276 1499 592 127 65 860 901 1115 626