Marshall Amplification JCM600 User Manual

JCM Valve Combos
& JCM 600 Valve Head.
JCM600
VALVE GUITAR AMPLIFIERS
ENGLISH
1
From the Chairman
I would like to thank you personally for selecting
For over thirty five years now my Company has been recognised around the world as one of the leading manufacturers of quality amplification. This is a direct result of our continual investment in not only research and development, but also people, expertise and new production techniques to enable us to design and manufacture consistently innovative products, all of which are built to stand the rigours of time.
Having been a musician myself for over fifty years, I know that these things are important to all musicians, but I also know that a major consideration to any musician is the cost of equipment. To this end I have made a conscious effort to employ new techniques to keep the production costs of the JCM 600 range at as reasonable a level as possible, without sacrificing any of the Marshall trademarks such as tone and quality, with which we would never compromise.
I would suggest that you read this handbook carefully before operating your new JCM 600 amplifier and would like to wish you every success with your new Marshall, which I am sure you will find a pleasure to play for many years to come.
Yours sincerely,
WARNING!
Please read the following list carefully.
A. ALWAYS fit a good quality mains plug conforming to the latest B.S.I. standards where necessary (UK only).
B. NEVER attempt to by-pass the fuses or fit ones of the incorrect value. C. NEVER attempt to replace fuses or valves with the amplifier connected to the mains. D. DO NOT attempt to remove the amplifier chassis, there are no user serviceable parts. E. ALWAYS have this equipment serviced or repaired by competent qualified personnel. F. NEVER use an amplifier in damp or wet conditions. G. DO NOT switch the amplifier on without the loudspeaker connected. H. ENSURE that any extension cabinets used are of the correct impedance. I. PLEASE read this instruction manual carefully before switching on. WARNING : This apparatus must be earthed! WARNING : Do not obstruct ventilation grille and always ensure free movement of air around
the amplifier!
Marshall Amplification has been inextricably linked with valve amplification since our very beginning in 1962. Products such as the original Bluesbreaker combos, JTM 45 and Super-Lead heads were all destined to be, and have become, classics in their own right.
All of these special Marshalls produced their magical tone by driving the guitar through an all valve pre-amp into a pure valve power-amp. The JCM 600 series carry on this grand tradition but meet the demands of contemporary guitarists by providing features such as channel switching, reverb, effects loop and speaker emulated output.
Using Your JCM 600 Amplifier
Your JCM 600 Valve combo or head is easily capable of producing a wide range of usable quality tones, from glassy vintage clean, Bluesbreaker type singing lead and crunchy chord work to full blown modern high gain crush. What’s more the controls are simple and intuitive to use giving you instant access to memorable Marshall tones.
Whilst one should always bear in mind that taste in tone is a very subjective matter, the following suggestions will give you a good starting point for getting some great sounds from your JCM 600 amplifier.
Clean
Make sure you select the Clean channel which is indicated by the green L.E.D. The strength and height of your pick-ups will have a great influence on the level you should set the volume on this channel before overdrive sets in. Generally speaking the volume control should be set below half way for totally clean sounds.
The tone network should be set with all three controls at 5 initially, then adjusted to suit the type of guitar and sound required. Generally single coil
ENGLISH
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JCM 600
Range Introduction
ENGLISH
3
pickups will require extra bass and middle to give the sound more body, but humbuckers may well require less middle and extra treble to cut through.
Vintage Overdrive
Switch to the Overdrive channel which is indicated by the Red L.E.D. Again
pickups will obviously influence settings but you will probably find that gain settings of around 5 or 6 are quite adequate, the key however is to increase the master volume level. As our vintage amps didn’t really have a lot of pre-amp gain guitarists used to crank the volume up to be heard which resulted in the natural classic Marshall overdrive roar. Alternatively the Clean Channel with its volume on maximum gives a very satisfying vintage type overdrive.
As far as tone settings go we would suggest that you start with the tone
controls set at about 5 and then adjust to taste from there. The selection of tone settings for single coil or humbucking pickups will follow the same general pattern as for the clean sound.
Modern Hi-Gain
Switch to the Overdrive channel indicated by the Red L.E.D. Turn the gain up to full and set the volume for the desired level. Tone controls
are set to taste, though probably with the Middle control lower than the Bass and Treble controls particularly to maintain the definition when using humbucking pickups.
The best advice we could really offer is to simply experiment and above all
enjoy the pure valve tone of your Marshall JCM 600 amplifier.
1) Footswitch Jack
Jack socket for connection of P801 Footpedal
for channel switching.
2) Push Channel Switch
Push switch for panel switching of the
channel. The push switch is inoperative when
the footswitch is connected.
3) Input Jack
Jack socket for the input of the guitar.
4) Volume Control
Controls the Volume of the Clean channel.
5) Bass Control
Controls the lower frequencies or bottom end
in the tone of the Clean channel.
6) Middle Control
Controls the middle frequencies and fatness of
the tone of the Clean channel.
7) Treble Control
Controls the upper or treble frequencies in the tone of the Clean channel.
8) L.E.D.
Indicates channel. Green-Clean. Red­Overdrive.
9) Gain Control
Controls the amount of Gain on the Overdrive channel.
10) Volume Control
Controls the volume of the Overdrive channel.
11) Bass Control
Controls the low end frequencies in the tone of the Overdrive channel.
12) Middle Control
Controls the middle frequencies in the tone of the Overdrive channel.
JCM 601, 602 & JCM600 Head
Front Panel Functions
ENGLISH
4
13) Treble Control
Controls the upper or treble frequencies in the tone of the Overdrive channel.
Please Note
The Tone Controls are interactive and adjusting one can effect the relative amounts of the others. Experimentation is the best way of finding your own personal favourites.
14) Parallel Effects Mix Control
Governs the amount of effected signal in the overall tone when used in conjunction with external effects through the parallel loop (see items 3 and 4 of the JCM 600 rear panel functions).
15) Clean Reverb
Controls the amount of Reverb on the Clean channel.
16) Overdrive Reverb
Controls the amount of Reverb on the Overdrive channel.
17) Volume
Controls the overall volume of the combo.
18) Standby Switch
Controls the H.T. supply to the valves and allows the valves to remain heated when not in use.
19) Power Switch
On / Off Switch for mains power to the amplifier.
Please Note
To prolong the life of the valves it is always advisable to switch on the Mains Power Switch (item 19) about 2 minutes before switching on the Standby (item 18).
This allows the valves to heat up to full working temperature before use. On switching off, the Standby should always be switched before the Power Switch.
1) Mains Fuse
Protects the amplifier and mains supply in the event of a fault.
Check the label on the back of the amp for the correct value. Always replace fuses with the
correct type and rating. It is a wise precaution to always carry spares.
2) Mains Input
Connects the amplifier to the mains power supply.
3) Parallel FX Loop Return Jack
Jack socket for connection from the output of an external effects processor.
Please Note
A parallel FX Loop is best suited for use with external effects processors which require a certain amount of dry or uneffected signal in the overall tone. Time based effects such as Delay and Chorus are typical examples of the effects best suited to this type of Loop.
4) Parallel FX Loop Send Jack
Jack socket for connection to the input of an external effects processor.
5) Series FX Loop Return Jack
Jack socket for connection to the output of an external effects processor.
6) Series FX Loop Send Jack
Jack socket for connection to the input of an external effects processor.
Note: The Series Loop is best suited to effects that require no dry signal such as Compressors or Graphic Equalisers.
7) D.I. Output
The JCM 600’s D.I. Out is switchable between a speaker Emulated signal (pre the power amp), and a non Emulated (post the power amp ) signal.
The Emulated Output captures the tonality of Vintage loudspeakers like no other D.I. furthermore this output is unaffected by the Master Volume controls therefore allowing the JCM 600’s output to be turned off whilst still providing silent recording facilities.
The D.I. Output is via an XLR type connector which allows this system to be run into either (a) a line level balanced input (b) a line level unbalanced input or (c) a low level unbalanced input.
Please Note
Refer to the JCM 600 XLR Out diagrams
(Below) for correct connections.
8) Pre/Post Switch
Allows Line Out selection between a speaker Emulated signal (pre the power amp) and non-emulated (post the power amp).
JCM 601, 602 & JCM600 Head
Rear Panel Functions
JAPANESE SPANISH GERMAN
FRENCH
ENGLISH
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9) Presence Control
This Master Presence control adjusts the
amount of top end frequencies in the overall
tone - adding crispness and bite.
10) Speaker Output
On combo formats of the JCM 600 this jack
is for connection to the internal 16 Ohm
speaker. On the JCM 600 Head this socket is
for connection to an external speaker cabinet,
such as the purpose built JCM C410A
compact 4x10” angled cabinet and/or the
JCM C410B compact 4x10” base cabinet.
11) Speaker Output
For connection to an external 16 Ohm
speaker (The Marshall JCM C12 1x12” and
JCM C212 2x12” cabinet are designed for
use with JCM 600 combos).
On the JCM 600 head this output could drive
a second JCM C410A or JCM C410B
cabinet.
Note
The JCM 600 combos and head will deliver 60 Watts into either one or two 16 Ohm speakers, ie. 16 or 8 Ohm total impedance. The unit should not be driven into a load of less than 8 Ohms.
If you unplug the internal loudspeaker in a JCM 600 combo it is possible to connect a single 8 Ohm cabinet to the extension Speaker Output only. However, when the internal speaker is connected only a 16 Ohm extension cabinet may be used.
It is important to follow these instructions as failure to do so may lead to the amp running into the wrong impedance, which will ultimately cause damage.
A
B
C
XLR Channel Input On Mixer (Note: Line Level­Approx OdBV)
2 Core Screened Balanced Mic Lead
Unbalanced XLR to Jack Screened Lead
Unbalanced XLR to Jack Screened Lead
Jack Plug Line Level Jack Input On Mixer Etc.
Jack Plug
NC
NC
Low Level Jack Input On Mixer (ie Mic Input)
JCM 600 XLR Out diagram
3
3
2
2
1
1
3
3 2
1
2 1
3 2
1
3 2
1
3 2
1
3 2
1
VOLUME BASS MIDDLE TREBLE
CLEAN
REVERB
OVERDRIVE
REVERB
VOLUME
OVERDRIVE MASTER
0
6
4
10
0
6
4
10
0
6
4
10
0
6
4
10
0
6
4
10
0
6
4
10
0
6
4
10
0
8
6
4
10
STANDBY
0
1
POWER
0
1
GAINVOLUME
CLEAN
BASS MIDDLE TREBLE
0
2
6
4
10 0
6
4
10 0
6
4
10
PUSH
CHANNEL
FOOT
SWITCH
INPUT
RED
GREEN
0
4
12
8
200
8
6
4
10
(Parallel Mix)
EFFECTS
JCM600
VALVE GUITAR AMPLIFIER
JCM600 Head & JCM601 Combo Front Panel
JCM602 Combo Front Panel
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 18 1917
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 18 1917
JCM600
FOOT
SWITCH
INPUT
PUSH
CHANNEL
VALVE GUITAR AMPLIFIER
4
2
0
CLEAN
4
6
10 0
BASS MIDDLE TREBLE
6
10 0
4
4
6
10
8
6
8
RED
10
GREEN
12
4
0
200
GAINVOLUME
OVERDRIVE MASTER
4
0
VOLUME BASS MIDDLE TREBLE
6
10 0
4
6
10 0
4
6
10 0
4
6
10 0
(Parallel Mix)
4
EFFECTS
6
10 0
4
6
CLEAN
REVERB
10 0
OVERDRIVE
4
REVERB
6
10 0
4
VOLUME
6
10
STANDBY
0
8
1
POWER
0
1
1 2 3 4 5 6 7 8 9 10 11
1 2 3 4 5 6 7 8 9 10 11
JCM601 & 602 Combo Rear Panel
JCM600 Head Rear Panel
CAUTION!:
SAME TYPE AND RATING ONLY. DISCONECT SUPPLY CORD BEFORE CHANGING FUSE. TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
ATTENTION!:
FUSIBLE DE MEME TYPE ET DE MEME CALIBRE. DEBRANCHER AVANT DE REMPLACER LE FUSIBLE. POUR EVITER LES RISQUES DE DECHARGES ELECTRIQUES, NE PAS OUVRIR LE COUVERCLE. CET APPAREIL NE COMPORTE AUCUNE PIECE SUSCEPTIBLE D’ETRE REPAREE PAR VOS SOINS. FAITES TOUJOURS APPEL A UN TECHNICIEN QUALIFIE POUR TOUTE REPARATION.
TO REDUCE THE RISK OF FIRE REPLACE FUSES WITH THE
POUR EVITER LES RISQUES D’INCENDIE UTILISER UN
CAUTION!:
SAME TYPE AND RATING ONLY. DISCONECT SUPPLY CORD BEFORE CHANGING FUSE.TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
ATTENTION!:
FUSIBLE DE MEME TYPE ET DE MEME CALIBRE. DEBRANCHER AVANT DE REMPLACER LE FUSIBLE.POUR EVITER LES RISQUES DE DECHARGES ELECTRIQUES, NE PAS OUVRIR LE COUVERCLE. CET APPAREIL NE COMPORTE AUCUNE PIECE SUSCEPTIBLE D’ETRE REPAREE PAR VOS SOINS. FAITES TOUJOURS APPEL A UN TECHNICIEN QUALIFIE POUR TOUTE REPARATION.
TO REDUCE THE RISK OF FIRE REPLACE FUSES WITH THE
POUR EVITER LES RISQUES D’INCENDIE UTILISER UN
Emulated
PWR Amp
Line Out
Presence
4
2
0
6
8
10
60 watts RMS into 8/16 .
OUTPUT
Internal
MAINS FUSE
120V—T3A
230V—T1.6A
MAINS INPUT
120V ~ 60 Hz 225 Watts
PARALELL
FX LOOP
SERIES
FX LOOP
Return ReturnSend Send
D.I.OUTPUT
Pin 1—OV, Pin 2—High, Pin 3—Low
MAINS FUSE
120V - T3A
230V - T1.6A
MAINS INPUT
120V ~ 60 Hz 225 Watts
Return
PARALLEL FX LOOP
Send
Return
SERIES
FX LOOP
Send
D.I.OUTPUT
Pin 1 - OV, Pin 2 - High, Pin 3 - Low
’’
Refer to manual
Se referer au manuel
Emulated
PWR Amp
Line Out
Presence
4
2
0
6
8
10
60 watts RMS into 8/16 .
OUTPUT
Main 16
Extension
Ext 16
Main 8
WARNING!:
OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. THIS APPARATUS MUST BE EARTHED.
AVIS!:
RISQUES D’INCENDIE ET DE DECHARGES ELECTRIQUES, N’EXPOSEZ JAMAIS CET APPAREIL A L’HUMIDITE OU A LA PLUIE. CONNECTER CET APPAREIL A LA TERRE.
WARNING!:
OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. THIS APPARATUS MUST BE EARTHED.
AVIS!:
RISQUES D’INCENDIE ET DE DECHARGES ELECTRIQUES, N’EXPOSEZ JAMAIS CET APPAREIL A L’HUMIDITE OU A LA PLUIE. CONNECTER CET APPAREIL A LA TERRE.
SHOCK HAZARD. DO NOT OPEN. TO REDUCE THE RISK OF FIRE
RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR. POUR EVITER LES
Made in England by:
Marshall Amplification plc,
Bletchley, Milton Keynes, England.
SHOCK HAZARD. DO NOT OPEN. TO REDUCE THE RISK OF FIRE
RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR. POUR EVITER LES
Made in England by:
Marshall Amplification plc,
Bletchley, Milton Keynes, England.
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