JCM 2000 DSL201 & DSL401 Combos Marshall Amplification plc Denbigh Road, Bletchley, Milton Keynes, MK1 1DQ, England Tel: (01908) 375411 Fax: (01908) 376118 Web Site - http://www.marshallamps.com Whilst the information contained herein is correct at the time of publication, due to our policy of constant improvement and development, Marshall Amplification plc reserve the right to alter specifications without prior notice.
WARNING! - Important safety instructions A. B. C. D. E. ALWAYS fit a good quality mains plug conforming to the latest B.S.I. standards where necessary (UK only). NEVER attempt to by-pass the fuses or fit ones of the incorrect value. NEVER attempt to replace fuses or valves with the amplifier connected to the mains. DO NOT attempt to remove the amplifier chassis, there are no user serviceable parts. Refer all servicing to qualified service personnel.
Continuing with the features of your amp, both the DSL201 and 401 have two totally independent, footswitchable channels, notably ‘Clean’ and ‘Overdrive’ which cover the whole range of tones from sparkly clean, through classic and modern ‘Crunch’, through to super-saturated Lead Overdrive.
5. Overdrive Gain find the tone too thin with the gain control down either take some of the high end off with the treble control, or alternatively, bring the clean gain control up until you achieve the depth of tone you want and then control the volume of the amp with the ‘master volume’ control. This controls the amount of gain drive available for the overdrive channel, from mildly almost clean crunch to super-saturated overdrive, depending where this control is set, i.e.
✪ User Hint - As the (rear panel mounted) speaker emulated D.I. output is derived from this circuit you can balance the sound coming out of the loudspeaker from zero to full, whilst maintaining a constant level out of the D.I. output and enjoy the tonal qualities of a pushpull valve output stage - ideal for silent recording, direct to the desk. heavy’ tone, turn the mid control down and boost the treble and bass. For a more classic ‘rock’ tone bring back the mids and bring the treble and bass down a bit.
. Loudspeaker Output Select (DSL401 Only) The DSL201 is fitted with a single loudspeaker socket preset at an impedance of 16 ohms, which is normally plugged into the internal 16 ohm 12” loudspeaker. To use an external loudspeaker, just unplug the internal speaker and plug into your external cabinet (this must be 16 ohms only), for instance, a Marshall 1960 4x12”. This switch selects the output impedance of the amplifier for either 8 or 16 ohm use, to match to alternate speaker systems.
4 DSL201 Front Panel CLN/OD TREBLE 4 6 GAIN 4 6 2 8 2 0 10 INPUT 1 MIDDLE 4 6 8 2 0 10 BASS 4 GAIN 6 8 2 0 JCM 2000 - DSL 201 10 4 8 0 2 10 VOLUME 4 6 6 8 2 0 10 8 2 0 10 CLEAN 2 TREBLE 4 6 MIDDLE 4 6 8 2 0 10 BASS 4 0 10 FX MIX 4 6 6 8 2 8 0 D U A L S U P ER L EA D REVERB 4 6 2 10 8 2 0 10 3 5 6 10 8 0 8 9 ON ON STANDBY POWER 11 12 10 MASTER 7 OFF VOLUME 4 6 8 2 0 OVERDRIVE OFF 10 DSL201 Rear Panel CAUTION!: Made in England by: Marshall A
4 DSL401 Front Panel CLN/OD CLEAN TREBLE 4 6 GAIN 4 6 2 8 2 0 10 INPUT 1 MIDDLE 4 6 8 2 0 0 10 GAIN 6 4 8 0 JCM 2000 - DSL 401 OD2 BASS 4 8 2 10 OD1/OD2 OD1 2 10 VOLUME 4 6 6 8 2 0 10 MIDDLE 4 6 8 2 0 10 CLEAN 2 TREBLE 4 6 8 2 0 10 BASS 4 0 FX MIX 4 6 6 8 2 8 10 0 D U A L S U P ER L EA D 2 10 REVERB 4 6 8 2 0 10 3 5 10 8 0 7 8 9 ON ON STANDBY POWER 11 12 10 MASTER 6 OFF VOLUME 4 6 8 2 0 OVERDRIVE OFF 10 DSL401 Rear Panel CAUTION!: Made i
