Marshall Amplification Stereo Amplifier MG100DFX User Manual

MG  
SERIES  
100DFX  
MG  
SERIES  
100HDFX  
Owners Manual  
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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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21  
22  
23  
24  
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 4’), 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 4  
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  
3 1  
3 2  
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