ENGLISH
2
CHANNEL 1 (Normal)
1. Input Jack
Connects the guitar to the amplifier. We
recommend that you always use a high quality
screened cable to help prevent noise, interference
and unwanted feedback.
2. Gain Control
Controls the gain level of the normal channel,
giving clean sounds up to halfway, then bringing
in blues to crunch rhythm sounds as the gain
increases.
3-5. Bass, Middle & Treble
Experimenting with these three wide ranging
interactive bands of equalisation will give you a
clearer understanding of the versatile G50RCD
tones available from this channel.
6. Channel Select Push Switch
Push switch to change from normal to boost
channels. Note - This switch must be in for
footswitch to function.
From Jim Marshall
I would like to thank you personally for selecting
one of our Marshall MG Series guitar combos.
Your new amplifier has been designed by the same
team of British designers who created all of the
great Marshall amps. It is built to the customary
exacting Marshall standards and will give you an
incredible spectrum of sounds to complement a
wide range of playing styles, as well as being
designed to stand the test of time.
The Marshall name has adorned many of Britain’s
finest amps, from the early 1960’s through to the
present day. Some of the original vintage amps
have become highly sought after by both amp
collectors and working guitarists alike.
This new line of transistor guitar and bass guitar
combos have been released to unanimous acclaim.
Your combo is part of a new breed of Marshall
amplifier, which has benefited from years of
experience and continual investment in research and
development.
Not only is the sound quality of your Marshall MG
Series amp of a standard that you would only come
to expect from Marshall’s own design team, the
Marshall G50RCD, G80RCD and G100RCD also have
a CD input to allow you to play along to CD’s. The
ultimate home practice facility.
I would like to wish you every success with your
new Marshall MG Series amplifier, which I am sure
you will find a pleasure to play for years to come.
Yours Sincerely,
ENGLISH
1
WARNING! - Important safety instructions
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. DO NOT attempt to remove the amplifier chassis, there are no user serviceable parts.
C. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been
damaged in any way, such as the power supply cord or plug is damaged, liquid has been spilled or objects
have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate
normally or has been dropped.
D. NEVERuse an amplifier in damp or wet conditions.
E. ALWAYS unplug this apparatus during lightning storms or when unused for long periods of time.
F. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles
and at the point where they exit from the apparatus.
G. DO NOTswitch the amplifier on without the loudspeaker connected.
H. ENSUREthat any extension cabinets used are of the correct impedance.
I. PLEASE read this instruction manual carefully before switching on.
Follow all instructions and heed all warnings.
WARNING : This apparatus must be earthed!
WARNING : Do not obstruct ventilation grille and always ensure free movement of air around the amplifier!
USA ONLY - DO NOT defeat the purpose of the polarised or grounding type plug. A polarised plug has two
blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The
wide blade or the third prong are provided for your safety. When the provided plug does not fit into your
outlet, consult an electrician for replacement of the obsolete outlet.
KEEP THESE INSTRUCTIONS
G50RCD Front Panel Features
INPUT GAIN BASS TREBLE FX
SENDFXRETURN
LINE
OUT
FOOT
SWITCH
MIDDLE
0 100 10 0 10 0 10 0 10 LOW HIGH 0 10 0 10 0 100 20
BOOST
GAIN CONTOUR BASS TREBLE VOLUME MASTER
REVERB
NORMAL CHANNEL BOOST CHANNEL
G50RCD
POWER
1 2 3 4 5
6
7 8 9 10 12 13 14 15 16 1711
ENGLISH
4
ENGLISH
3
CHANNEL 2 (Boost)
7. Gain Control
Controls the gain level on the boost channel. Take
some time to experiment with the varying gain
levels to find the wide variety of distortion sounds
available.
8. Contour Control
Mid-band contour shift, giving wide voicing sweep
for maximum tonal versatility on overdrive
selections. When used in conjunction with the EQ,
this control is highly effective.
9-10. Bass & Treble Controls
Interactive EQ controls covering the lower through
to the upper frequencies and offering accurate
sound tailoring.
11. Volume
Controls the overall volume level of the boost
channel.
MASTER SECTION
12. Master Reverb
Gives overall control of the depth of reverb effect
for both channels.
Effects Loop
The effects loop is used for connecting an external
effects processor or floor pedal. The effects loop
on the Marshall G50RCD is sensitive enough to
suit the level of either type (processor or floor
pedal) to ensure that a perfect match is made.
Generally it is advisable to connect time based
effects such as Chorus or Delay through the loop
only and any external distortion type effects
directly between the guitar and the combo.
13. FX Send
For connection to the input of an external effects
processor or floor pedal.
14. FX Return
For connection to the output of an external effects
processor or floor pedal.
15. Line Output
Filtered output for connection directly to a
recording or PA mixing desk.
16. Footswitch Jack
Socket for the connection of a single footswitch
for normal/ boost channel switching only (model
PEDL 10008 included).
17. Power Switch
Switches the Mains to the unit.
G50RCD Front Panel Features
G50RCD Rear Panel Features
1. Mains Input
Mains inlet for mains lead supplied.
2. CD Input
This is an input for connection to a CD player, tape
player or other auxiliary device, to allow you to
play along. This is a fixed level input, so volume
of your backing music should be adjusted on the
auxiliary unit itself.
Note: The CD Input is not suitable for connection
to speaker/poweramp outputs.
MAINS INPUT
230V ~ 50Hz
90 Watts
WARNING!:SHOCK HAZARD. DO NOT OPEN. TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. THIS APPARATUS MUST BE EARTHED.
AVIS!:RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR. POUR EVITER LES 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.
CAUTION!: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER.
NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
ATTENTION!:POUR EVITER LES RISQUES DE DECHARGES ELECTRIQUES, NE PAS OUVRIR LE
COUVERCLE. CET APPARRIL NE COMPORTE AUCUNE PIECE SUSCEPTIBLE D’ETRE REPAREE PAR VOS
SOINS. FAITES TOUJOURS APPEL A UN TECHNICIEN QUALIFIE POUR TOUTE REPARATION.
50 Watts RMS into 8Ω
CD INPUT
Designed, Engineered and
Quality Controlled
by Marshall Amplification plc UK
Made in India
21
G80RCD & G100RCD Front Panel Features
INPUT GAIN BASS TREBLE
LOOP
LEVEL
GAIN BASS MIDDLE TREBLE CONTOUR VOLUME SEND LINE
OUT
FOOT
SWITCH
EFFECTS REVERB VOLUMEMIDDLE
LOW HIGH0 10 0 10 0 10 0 20 0 10 0 10 0 10 0 10 DRY EFF 0 10 0 10
RETURN
CRUNCH
OD2
OD1
0dB
-20dB
CHANNEL
SELECT
NORMAL CHANNEL BOOST CHANNEL MASTER
CLEAN
0 10
POWER
G80RCD
1
234
5 6
7
8910 11 12 14 151617 18 19 20
21
22 2313
G80RCD - 80 Watt Combo
G100RCD - 100 Watt Head
CHANNEL 1 (Normal)
1. Input Jack
Connects the guitar to the amplifier. We
recommend that you always use a high quality
screened cable to help prevent noise, interference
and unwanted feedback.
2. Gain Control
Controls the gain level of the normal channel on
both Clean and Crunch selections. In Clean mode,
sounds remain clean, even at high gain levels.
When switched to Crunch mode the amount of
crunch increases as you wind the gain up.
3. Clean/Crunch Rhythm Switch
Push switch to select either clean or crunch
sounds on the normal channel (push in for
Crunch).
4-6. Bass, Middle & Treble
Full 3 band EQ for normal channel tonal
selections. These controls are effective and
interactive to give you incredible versatility. Try as
many combinations as possible to really get to
know your EQ.
7. Channel Select
Normal to boost channel selector switch. This
function is also footswitchable. Set the switch to
the in position for the footswitch to function.
LED’s indicate which mode has been selected.
CHANNEL 2 (Boost)
8. Gain Control
Controls the gain level of the boost channel. This
control is effective on either overdrive selection.
On OD1, it fattens the bluesy distortion and on
OD2 goes from rock overdrive to full metallic
thrash as you turn it up.
9. Overdrive Select (OD1 to OD2)
Manually switches from creamy ‘classic’ OD1 to
screaming ‘Hi Gain’ OD2 distortion modes.
10-12. Bass, Middle & Treble
Effective 3 band EQ to shape the tone of all
overdrive selections.
13. Contour Control
This sweeping control shifts the mid-band voicing
of the boost channel to give amazing versatility to
your overdrive sounds. When used in conjunction
with the 3 band EQ, this control is devastating!
14. Volume Control
Controlling the overall level of the boost channel,
this allows volume balancing between the two
channels.
MASTER SECTION
Effects Loop
The effects loop is used for connecting an external
effects processor or floor pedal. Generally it is
advisable to connect time based effects such as
Chorus or Delay through the loop only and any
external distortion type effects directly between
the guitar and the combo.
15. Effects Send Jack
For linking to the input of an external effects
processor or floor pedal.
16. Effects Level Switch
Selects the level to match your external effects
units (0dB for rack units and -20dB for pedals).
17. Effects Return Jack
For connection from the output of an external
effects processor or floor pedal.
ENGLISH
5
18. Effects Mix
When using the FX Loop on the front panel, the
FX Mix allows you to dial in the desired amount of
effected signal into your overall sound. Turning the
control fully clockwise will result in a fully effected
sound, i.e. no dry signal and turning the control
fully anticlockwise will result in a fully dry sound.
19. Master Reverb
Controls the level of reverb effect on all channel
selections.
20. Master Volume
Controls the overall volume level of the amp or
combo.
21. Line Out Jack
Filtered low level signal for linking to a recording
or mixing desk.
22. Footswitch Jack
For the connection of a two way footswitch for
reverb and channel selection (Marshall footswitch
PEDL 10009 included).
23. Power Switch
Switches the Mains to the unit.
G80RCD & G100RCD Front Panel Features
G80RCD & G100RCD Rear Panel Features
1. Mains Input
Mains inlet for mains lead supplied.
2 & 3.
The rear panel features two parallel wired sockets
for the connection of loudspeaker systems, the
combined total impedance of which should not be
less than 4 Ohms, eg; two 8 Ohms cabinets in parallel.
4. CD Input
This is an input for connection to a CD player, tape
player or other auxiliary device, to allow you to
play along. This level can be altered using the
Master Volume.
Note: The CD Input is not suitable for connection
to speaker/power amp outputs.
CD INPUT
SPEAKER OUTPUT
MAINS INPUT
230V ~ 50Hz
160 Watts
WARNING!:RISK OF HAZARDOUS ENERGY!
AVIS! : ENERGIE ELECTRIQUE DANGEREUSE!
REFERTO MANUAL FORFULL DETAILS.
SEREFERER AU MANUELPOUR PLUS DE DETAILS.
WARNING!:SHOCK HAZARD. DO NOT OPEN. TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. THIS APPARATUS MUST BE EARTHED.
AVIS!:RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR. POUR EVITER LES 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.
CAUTION!:TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER.
NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
ATTENTION!:POUR EVITER LES RISQUES DE DECHARGES ELECTRIQUES, NE PAS OUVRIR LE
COUVERCLE. CET APPARRIL NE COMPORTE AUCUNE PIECE SUSCEPTIBLE D’ETRE REPAREE PAR VOS
SOINS. FAITES TOUJOURS APPEL A UN TECHNICIEN QUALIFIE POUR TOUTE REPARATION.
100 WattsRMS into 4Ω
1 2
Designed, Engineered and
Quality Controlled
by Marshall Amplification plc UK
Made in India
21
3
4
INPUT GAIN BASS TREBLE FX
SENDFXRETURN
LINE
OUT
FOOT
SWITCH
MIDDLE
0 100 10 0 10 0 10 0 10 LOW HIGH 0 10 0 10 0 100 20
BOOST
GAIN CONTOUR BASS TREBLE VOLUME MASTER
REVERB
NORMAL CHANNEL BOOST CHANNEL
G50RCD
POWER
INPUT GAIN BASS TREBLE FX
SENDFXRETURN
LINE
OUT
FOOT
SWITCH
MIDDLE
0 100 10 0 10 0 10 0 10 LOW HIGH 0 10 0 10 0 100 20
BOOST
GAIN CONTOUR BASS TREBLE VOLUME MASTER
REVERB
NORMAL CHANNEL BOOST CHANNEL
G50RCD
POWER
INPUT GAIN BASS TREBLE FX
SENDFXRETURN
LINE
OUT
FOOT
SWITCH
MIDDLE
0 100 10 0 10 0 10 0 10 LOW HIGH 0 10 0 10 0 100 20
BOOST
GAIN CONTOUR BASS TREBLE VOLUME MASTER
REVERB
NORMAL CHANNEL BOOST CHANNEL
G50RCD
POWER
INPUT GAIN BASS TREBLE FX
SENDFXRETURN
LINE
OUT
FOOT
SWITCH
MIDDLE
0 100 10 0 10 0 10 0 10 LOW HIGH 0 10 0 10 0 100 20
BOOST
GAIN CONTOUR BASS TREBLE VOLUME MASTER
REVERB
NORMAL CHANNEL BOOST CHANNEL
G50RCD
POWER
INPUT GAIN BASS TREBLE FX
SENDFXRETURN
LINE
OUT
FOOT
SWITCH
MIDDLE
0 100 10 0 10 0 10 0 10 LOW HIGH 0 10 0 10 0 100 20
BOOST
GAIN CONTOUR BASS TREBLE VOLUME MASTER
REVERB
NORMAL CHANNEL BOOST CHANNEL
G50RCD
POWER
INPUT GAIN BASS TREBLE FX
SENDFXRETURN
LINE
OUT
FOOT
SWITCH
MIDDLE
0 100 10 0 10 0 10 0 10 LOW HIGH 0 10 0 10 0 100 20
BOOST
GAIN CONTOUR BASS TREBLE VOLUME MASTER
REVERB
NORMAL CHANNEL BOOST CHANNEL
G50RCD
POWER
INPUT GAIN BASS TREBLE FX
SENDFXRETURN
LINE
OUT
FOOT
SWITCH
MIDDLE
0 100 10 0 10 0 10 0 10 LOW HIGH 0 10 0 10 0 100 20
BOOST
GAIN CONTOUR BASS TREBLE VOLUME MASTER
REVERB
NORMAL CHANNEL BOOST CHANNEL
G50RCD
POWER
INPUT GAIN BASS TREBLE FX
SENDFXRETURN
LINE
OUT
FOOT
SWITCH
MIDDLE
0 100 10 0 10 0 10 0 10 LOW HIGH 0 10 0 10 0 100 20
BOOST
GAIN CONTOUR BASS TREBLE VOLUME MASTER
REVERB
NORMAL CHANNEL BOOST CHANNEL
G50RCD
POWER
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