MG
SERIES
100DFX
MG
SERIES
100HDFX
Owners Manual
WARNING! - Important safety instructions
WARNING: This apparatus must be earthed!
A. PLEASE read this instruction manual carefully before switching on.
!
B. ALWAYS use the supplied mains lead, if a replacement is required please contact your
authorised Marshall Dealer.
C. NEVER attempt to bypass the fuses or fit ones of the incorrect value.
D. DO NOT attempt to remove the amplifier chassis, there are no user serviceable parts.
E. Refer all servicing to qualified service personnel.
From Jim Marshall
Servicing is required when the apparatus has been damaged in any way, such as when 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.
I would like to personally thank you for selecting one of two
100 Watt models in my new MG range – the MG100DFX
1x12" Combo or the MG100HDFX Head.
F. NEVER use an amplifier in damp or wet conditions. No objects filled with liquids should be placed
As a musician myself, I fully understand what it takes to
perform live in a band situation. In addition to talent,
on the apparatus.
dedication and a lot of hard work, you also need equipment
that will help you deliver the goods in each and every playing
situation you find yourself in. With this goal firmly in mind, I
set my experienced R&D team the task of designing a new
range of affordable MG amplifiers that will deliver the tone
you’re looking for at all volume levels – from quiet late night
practice to a full-blown live gig and all points in-between – in the way only a Marshall can.
G. ALWAYS unplug this apparatus during lightning storms or if unused for long periods of time.
H. 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.
I. DO NOT switch the amplifier on without the loudspeaker connected.
➲
Note: This equipment has been tested and found to comply with the requirements of the EMC
Utilising groundbreaking new technologies, some of which were developed for our critically acclaimed
AVT range, the new MG Series raises the standard for what can be expected from a value-for-money
range of guitar amplifiers and defines a new benchmark. For example, the power amp section of your
new combo boasts FDD (Frequency Dependent Damping) – a radical new feature that is exclusive to
Marshall Amplification and accurately mimics the way our all-valve amplifiers interact with a
loudspeaker. As a direct result of FDD, your new MG100DFX or MG100HDFX will give you a sound
and feel never before thought possible in such an affordable, non-valve amp.
directive (Environments E1, E2 and E3 EN 55103-1/2) and the Low Voltage directive in the E.U.
➲
EUROPE ONLY - Note: The Peak Inrush current for the MG100DFX Combo and the MG100HDFX
Head is 21 amps.
➲
CAUTION: Any changes or modifications not expressly approved by the party responsible for
compliance may void the users authority to operate the equipment.
The DFX (Digital Effects) featured in both the MG100DFX Combo and MG100HDFX Head have been
custom voiced by our in-house digital effects experts. Each one of the five effect types on offer
(Chorus/Delay, Delay, Chorus, Flange and Reverb) have been designed to emulate the much sought
after warmth and feel of analogue effects, but in a highly flexible digital format. Furthermore, a wide
range of variations for each effect are quite literally at your fingertips – merely tweaking the three DFX
controls (Preset/Adjust & FX Level controls for the Chorus/Delay, Delay, Chorus and Flange options;
and a separate Level control for the Reverb) on the front panel, will give rise to sounds that range from
subtle to radical, while always remaining both natural and musical.
➲ Note: It is recommended that all audio cables, with the exception of the speaker lead(s), used to
connect to the MG100DFX and MG100HDFX are of a high quality screened type. These should not
exceed 10 metres in length.
Always use a non-screened Marshall approved speaker lead when connecting an extension cabinet to
these units.
➲ WARNING: 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.
Like all the amplifiers in the new MG range, state-of-the-art manufacturing and stringent quality control
procedures ensure that these combos meet the high standard of build you have come to expect from all
Marshall products. The MG100DFX and MG100HDFX were completely designed and engineered at my
Headquarters in Milton Keynes, England.
Whether the MG100DFX or MG100HDFX is your first ever Marshall, or is the latest addition to your
arsenal of amps, the tone, flexibility and feel of these compact, rugged units is guaranteed to deliver the
goods – from bedroom to backstage to onstage!
Follow all instructions and heed all warnings
KEEP THESE INSTRUCTIONS !
I wish you every success with your new Marshall. Welcome to the family...
Yours Sincerely,
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MG100DFX & MG100HDFX Front Panel Features
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Overdrive Channel. Channel switching can also be
done via the included two-way footswitch (when the
footswitch is connected the CHANNEL SELECT
switch is not functional).
1. INPUT jack
Use a good quality guitar cable (i.e. one that’s
screened/shielded) to plug your guitar in here.
13. Overdrive Channel TREBLE control
15. Overdrive Channel VOLUME control
This important knob controls the aggressive top-
end ‘sizzle’ you have on high gain sounds and the
‘cut’ and definition of lower gain crunch tones.
Experimenting with this control will help you to
dial in your own signature tones on your amp.
This control adjusts the volume of the Overdrive
Channel. The louder you turn up this channel, the
‘looser’ your amp will sound and feel – especially
with the FDD switch (21) engaged. This behaviour
is exactly what a good all-valve amplifier does
and is a result of our proprietary FDD circuitry.
2. Clean Channel GAIN control
Note: When the Overdrive Channel is selected,
the OD LED (8) will light up red.
The Clean Channel has two selectable modes,
Clean & Crunch. When in Clean mode, the Gain
control takes you from clean, bell-like tones to a
mild, bluesy distortion at high settings. When in
Crunch mode, this control takes you from a creamy,
‘70s crunch, to the roar of a hot-rodded JCM800
and all points in-between.
14. Overdrive Channel CONTOUR control
8. OD LED
16. Digital FX PRESET / ADJUST control
This highly effective tone control works by
radically modifying the mid-range (body) of your
sound. The tone can vary from traditional and
woody sounding (control set at 0), to balls-to-the-
wall (control set midway), to aggressive, ‘scooped’
and modern (turned up to 10) and all points in-
between.
When illuminated, this LED indicates that the
Overdrive Channel has been selected by either the
Channel Select switch (7) or the supplied two-way
footswitch.
This control serves a dual purpose. Not only
does it allow you to select one of the four types of
effects on offer (Chorus / Delay (CHR/DLY),
Delay (DLY), Chorus (CHR) or Flange (FLG)), it
also allows you to adjust a parameter as you
sweep it through each of the four effect segments.
The parameter you can adjust for each of the four
effect segments is shown below:
3. CLEAN / CRUNCH Select
Push switch to select either clean or crunch
sounds on the normal channel (push in for Crunch).
9. Overdrive Channel GAIN control
Turning up the Gain control will increase the
amount of preamp distortion generated in the
Overdrive Channel. Low Gain control settings will
produce classic rock and blues tones. Crank this
control for fat and aggressive sounds that are
perfect for soloing or hard rock and nu-metal riffing.
4. Clean Channel BASS control
Turning up the Bass control will add warmth and
low-end depth to your clean sound. The Bass control
can be used in conjunction with the FDD switch (21) to
produce deep sounding, valve-like clean tones that
are well defined yet still full and round.
Effect
Adjustable Parameter
Delay Time
Description
Chorus
This multi-effect combines a lush, fixed speed
10. OD1 / OD2 Select
OD1 mode (switch out) offers more distortion than
most amps, OD2 (switch in) takes you to the next
level and is definitely not for the faint-hearted!
and Delay (from short to long as you turn the Chorus with a variable time Delay.
(CHR/DLY) Preset/Adjust control clockwise
through the CHR/DLY segment)
5. Clean Channel MIDDLE control
Adjusting the middle frequencies in your Clean
Channel will vary the amount of body to your sound.
Attenuating (decreasing) the middle by turning this
control anticlockwise will yield a more hollow sound
with the bass and treble frequencies appearing to be
more accentuated. Conversely, increasing the
middle will add body to the Clean Channel’s sound.
Delay
(DLY)
Delay Time
Short Delay Times will have less repeats for
11. Overdrive Channel BASS control
(from short to long as you turn the ‘groovy’ surf and rockabilly tones. Increasing the
Preset/Adjust control clockwise
through the DLY segment)
Turning up this control will add extra low-end
‘thump’ to high gain riffs and a warm, natural
sounding depth to lower gain crunch tones. Using
the Bass control in conjunction with the FDD switch
(21) will allow you to dial in the exact amount of low-
end ‘thump’ and tightness you are looking for.
Delay Time increases the number of repeats for a
much more atmospheric, ‘stadium’ effect.
Chorus
(CHR)
Speed
At slow Speeds a mellow, Phase-like sweep
(from slow to fast as you turn the occurs. As the Speed is increased a more
Preset/Adjust control clockwise
through the CHR segment)
traditional chorus effect is heard. At maximum
Speed, a psychedelic vibrato results.
6. Clean Channel TREBLE control
12. Overdrive Channel MIDDLE control
Increasing the Treble will make your clean sounds
brighter and more cutting, turning it down will
decrease your tones edge and make it sound softer
as a result.
Adjusting the middle frequencies in your Overdrive
Channel will vary the amount of body to your sound.
Attenuating (decreasing) the middle by turning this
control anticlockwise will yield a more hollow sound
with the bass and treble frequencies appearing to be
more accentuated. Conversely, increasing the
middle will add body to the Overdrive Channel’s
sound.
Flange
(FLG)
Speed
At slow Speed settings the amount of regeneration
(from slow to fast as you turn the is increased for huge ‘jet engine-like’ sweeps. As the
Preset/Adjust control clockwise
through the FLG segment)
speed is increased the regeneration decreases to
produce a lush, natural sounding Flange effect. When
the Speed is maxed out, a fast vibrato results.
7. CHANNEL SELECT switch
This push switch allows you to change between
the amp’s two channels, Clean and Overdrive, via
the front panel. When this switch is ‘out’ the Clean
Channel is engaged, pushing it ‘in’ switches to the
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MG100DFX Rear Panel Features
17. Digital FX LEVEL control
22. CD IN jack
This controls how much of the chosen effect
gets mixed in with your unaffected (dry) guitar
tone. Want to hear more of the DFX you’ve just
selected? Then simply turn this control up!
If you want to jam to your favourite CD or tape,
merely connect the headphone output of your CD
or tape player here, adjust the CD/tape player’s
volume to match that of your guitar and you’ve got
the perfect ‘play-along’ practice system.
Important Footswitch Note: Using the
supplied two-way footswitch, you can switch the
selected DFX on/off.
23. EMULATED LINE OUT &
HEADPHONES jack
18. REVERB LEVEL control
This jack can be used as either an Emulated
Line Out or as a Headphone output. This means
you can use this socket to connect your amp
directly to your multi-track recording machine and
you’ll get a great, speaker emulated guitar sound
direct to disk or tape. Alternatively you can plug
your headphones in here for a killer, speaker-
emulated sound!
This control lets you add a lush Reverb to your
sound – from a subtle hint to cavernous and all
points in-between. Designed by our in-house
digital experts, this custom designed Marshall
Reverb is highly musical and always sounds
natural – it never gets harsh or ‘fake’ sounding.
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MG100HDFX Rear Panel Features
Important Footswitch Note: The supplied
footswitch does NOT switch the Reverb on/off.
TIP: How to practise or record in ‘silence’: The
Clean Channel GAIN control (2) and the
Overdrive Channel VOLUME control (15) will
control the level of the headphone and line out.
19. EFFECTS LOOP MIX control
When using the FX Loop on the rear 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.
The speaker output can be adjusted
independently using the MASTER VOLUME
control (20). Setting the MASTER VOLUME
control (20) to zero will allow silent recording or
practice.
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1. MAINS INPUT Connector
3. FX RETURN
This is where you connect the OUTPUT of the
effects processor you are using in the effects
loop.
The MG amplifier is provided with a detachable
mains (power) lead which is connected here.
The specific mains input voltage rating that your
amplifier requires is clearly indicated on the
back panel. Before connecting to the mains for
the first time please make sure that your
amplifier is compatible with your electricity
supply.
24. POWER Switch & LED
20. MASTER VOLUME control
The power switch turns your amplifier on and
off. The LED will be lit when your amplifier is on
and will not be lit when the amplifier is switched
off.
As its name suggests, the Master Volume
control determines the overall volume of your
amplifier. So after setting-up the relative volume
of Channels 1 & 2 the overall level can be
adjusted without affecting your all-important
Clean/Overdrive balance.
4. FX SEND
If you want to use an external effects
processor in your amp’s built-in Parallel effects
loop, this is the jack you connect to the INPUT
of the unit you are using.
Note: Before connecting to the mains electricity
supply, always ensure that your amplifier is
compatible with your electricity supply, as detailed
on the rear panel.
2. LOUDSPEAKER Output(s)
MG100DFX Combo
There is one speaker jack socket on the
MG100DFX (marked ‘INTERNAL 4Ω’), this is
where the MG100DFX power amplifier is
connected to the internal Celestion loudspeaker.
21. FDD (Frequency Dependent Damping)
switch
5. FX LEVEL Switch
Selects the level to match your external effects
units (+4dB for rack units and -10dB for pedals).
Please ensure the amplifier is switched off and
unplugged from the mains electricity supply
before being moved.
Marshall’s proprietary FDD circuit accurately
mimics the way an all-valve amplifier interacts
with the loudspeaker(s) and adds a width and
depth to your sound which has been
unachievable in an affordable solid-state
amplifier... until now! To engage FDD simply
press this switch in.
6. FOOTSWITCH
Connect the supplied two-way footswitch here.
Its left button (marked Channel) enables you to
change channels and its right button (marked
DFX) allows you to switch the DFX Section
on/off.
MG100HDFX Head
The MG100HDFX Head has two speaker
sockets for connection to either 1 or 2 external
cabinets. Ensure the total load impedance is
equal to, or exceeds, 4 ohms.
Important Footswitch Note: The supplied
footswitch does NOT switch the Reverb on/off.
Always use a non-screened Marshall
approved speaker lead when connecting an
extension cabinet to these units.
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MG
MG
SERIES
SERIES
100DFX
100HDFX
Technical Specification
Especificaciones técnicas
Technische Daten
Technical Specification
Especificaciones técnicas
Technische Daten
Caractéristiques techniques
Caractéristiques techniques
Power Output
100W RMS into 4Ω
Power Output
100W RMS into 4Ω
Potencia de salida
Ausgangsleistung
Puissance de sortie
100W RMS sobre 4Ω
100W RMS an 4Ω
Potencia de salida
Ausgangsleistung
Puissance de sortie
100W RMS sobre 4Ω
100W RMS an 4Ω
100W RMS sous 4 ohms
100W RMS / 4Ω
100W RMS sous 4 ohms
100 W RMS / 4Ω
Main Guitar • Input Impedance
1MΩ
Main Guitar • Input Impedance
1MΩ
Impedancia de entrada principal de guitarra
Guitar • Input Eingangsimpedanz
Impédance d'entrée
1MΩ
1MΩ
1MΩ
1MΩ
Impedancia de entrada principal de guitarra
Guitar • Input Eingangsimpedanz
Impédance d'entrée
1MΩ
1MΩ
1MΩ
1MΩ
CD Input • Input impedance
5.6
CD Input • Input impedance
5.6
kΩ
kΩ
Impedancia de entrada de CD
CD Input • Eingangsimpedanz
Impédance d'entrée CD
5.6kΩ
5.6kΩ
5.6kΩ
5.6kΩ
Impedancia de entrada de CD
CD Input • Eingangsimpedanz
Impédance d'entrée CD
5.6kΩ
5.6kΩ
5.6kΩ
5.6kΩ
Emulated Output • Level
+4
Emulated Output • Level
+4
dBV
dBV
Nivel de salida de línea simulada
Emulated Output • Ausgangspegel
Niveau de sortie
+4dBV
+4dBV
+4dBV
+4dBV
Nivel de salida de línea simulada
Emulated Output • Ausgangspegel
Niveau de sortie
+4dBV
+4dBV
+4dBV
+4dBV
Weight
22.4
Weight
12.8
kg
kg
Peso
22.4kg
22.4kg
22.4kg
22.4kg
Peso
12.8kg
12.8kg
12.8kg
12.8kg
Gewicht
Poids
Gewicht
Poids
Size (mm)
Size (mm)
590mm x 526mm x 277mm
590mm x 253mm x 270mm
Tamaño (mm)
Maße (mm)
Taille (mm)
590mm x 526mm x 277mm
590mm x 526mm x 277mm
590mm x 526mm x 277mm
590mm x 526mm x 277mm
Tamaño (mm)
Maße (mm)
Taille (mm)
590mm x 253mm x 270mm
590mm x 253mm x 270mm
590mm x 253mm x 270mm
590mm x 253mm x 270mm
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