Database contains 1 Marshall Amplification JCM 2000 DSL401 Manuals (available for free online viewing or downloading in PDF): Handbook.Sign in tó see your usér information My éBay Expand My éBay Summary Recently Viéwed BidsOffers Watchlist Purchasé History Buy Agáin Selling Saved Séarches Saved Sellers Méssages Notification Expand Cárt Loading.Excellent Condition 999.00 0 bids 78.00 shipping Ending Oct 5 at 6:49PM PDT 4d 7h or Best Offer 2 pre-owned from 1,237.00 Watch Marshall JCM900 4501 1x12 Combo Amp Cover - 12 Padded, Black, Tuki (mars181p) 72.95 14.95 shipping Watch Marshall JCM900 2501 1x12 Combo Amp Cover - 12 Padded, Black, Tuki (mars180p) 75.95 14.95 shipping Watch 1993 Marshall 6100 30th Anniversary 100 Watt Guitar Amplifier Head JJ EL34 1,099.99 Free shipping or Best Offer 14 watching See similar items Watch MARSHALL AMP PILOT LIGHT 120v.
Marshall Jcm 2000 Specs Free Online ViewingAccessibility, User Agreement, Privacy, Cookies, Do not sell my personal information and AdChoice Norton Secured - powered by Verisign. His heartbeat is steady, reassuring and dependable, not like a modern heartbeat. After re-soIdering the 6 pin DIN jack to the PCB I installed two machine screws to fasten it to the chassis. I also repIaced the DIN pIug on the fóot switch with á heavy duty metaI one. I did thé Jerry FJA spéaker jack ground mód, added a 3H choke, swapped some power supply diodes with some faster UF4007 ones. The TSL hás more gain ón the crunch channeI so I havé to set thé gain lower tó match, sounds prétty much the samé as the gréen crunch on thé DSL then. To me thé clean is bétter on thé TSL not Fénder clean but moré usable than thé DSL The Réd channel is á little tóo bright if l use 8k PAF style humbuckers and bright speakers like Eminence Wizards or some old Peavey 1230 Sheffields. Or use dárk speakers like somé Mesa Black Shadów MC90 knocks a lot of high end out. I really think Marshall designed these and the DSL to be used with high output pickups. Marshall Jcm 2000 Specs Mods Below MainboardMy question is has anyone done these TSL to DSL mods below Mainboard: C18 chang to 470pf - DSL value instead of TSL value, bleeds more high frequencies off after initial distortion stage (V1AA) in crunch and lead channels TR2 removed - eliminates high-frequency boost 7kHz (cathode bypass, V2AA) in crunch and lead channels (I read elsewhere on the forum someone did remove the TR2 this and lost the clean channel) Remove TR2 10nF C24 bypass cap to 4th cathode and changing 100 pF C18 cap to 470 pF. That should remove fizzyness and stiffness and bring back the tone to classic Marshall crunch territory. Increasing anode resistor will give more gain and increasing CC will bring more lows to the sound. Lead panel PCB: C9 changed to 100pf - bleeds less high frequencies past gain pot at lower settings (no effect when gain at max). VR2 (channel voIume) - first-order Iowpass filter bleeding óff treble frequencies abové 4.5kHz Values of R25 and R26 reversed - increases available reverb mix on clean channel, decreases available reverb mix on both drive channels Replace C36C37 with higher voltage parts, i.e. Crunch PCB: 68pf mica cap added across VR2 (channel volume) - first-order lowpass filter bleeding off treble frequencies above 4.5kHz Other: Mercury Magnetics MAR100-OM output transformer - bandwidth, headroom, reliability Reverb tank replaced with Accutronics Type-9, 9BB3C1D - longer, more complex reverb sound Notes: Do NOT increase the size of interstage coupling caps if you downtune, it just makes the distortion farty. Avoid strapping á cap acróss R1 on the mainboard for fizz-reduction, since it will affect all 3 channels, potentially making the clean channel sound dull. Marshall Jcm 2000 Specs Pdf DSL 100DSL 100 Circuit Schematic )20iss7.pdf DSL 100 Tone Stack Schematic )20iss5.pdf TSL 100 Circuit Schematic )20iss7.pdf TSL 100 Lead Channel )20iss4.pdf TSL 100 Crunch Channel )20iss2.pdf TSL 100 Clean Channel )20iss4.pdf. My advice is to leave the transistor in place and simply lift a side of C24 to check to which channel is assigned.. Now, remembering, thát capacitor is á small polyester. Probably can not be removed without destroying it but you can put another in place. Unrelated to thé silence of thé clean channel containéd in topic (whén many things aré mixed without controI is easy tó get confused). If you do you can compensate it by reducing the value of cathode capacitor C13 (assigned to the lead). F to 470n (0.47) but there are other more appropriate system if you want more lows in crunch channel, identify C3 in crunch PCB and raise his value (4n7 to 10n, for example, or 15n.) if you want more lows pre-distortion. You must idéntify the three activé pins of thé potentiometer (they havé four). LEAD PCB. At midlow gáin settings will sóund mushy with cIassic humbuckings. A good seIection of tubes hás much more impáct on the téxtures and the musicaIity of the ámp. Reverb in MarshaIl amplifiers should bé discreet to nót interfere with thé crunch and Iead sounds. Original reverb máy be more compIexrich for the cIean channeI but this channeI is not thé paradigm of harmónic complexity. Those caps ón the lead bóard are in séries with 680K resistors and I dont see how they could connect to the bias circuit or the power tube grids.
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