Marshall Amplification Stereo Amplifier MG30DFX User Manual

MG  
SERIES  
30DFX  
EMULATED  
FOOTSWITCHING  
2
CHANNELS  
CD INPUT  
EQ  
DIGITAL FX  
BASS  
CONTOUR  
TREBLE  
CLEAN  
OVERDRIVE  
LINE OUT  
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.  
Note: Closed back equipment with non-detachable mains cord.  
When the equipment is not in use or is being transported, the mains  
cord should be gathered and retained under the top strap handle to  
prevent damage. See diagram.  
From Jim Marshall  
C. NEVER attempt to by-pass the fuses or fit ones of the incorrect value.  
D. DO NOT attempt to remove the amplifier chassis, there are no user serviceable parts.  
I would like to thank you personally for selecting  
our new MG30DFX combo.  
E. Refer all servicing to qualified service personnel.  
As a musician myself I fully understand the  
necessity of achieving the right tone and feel to help  
inspire you to reach your full creative potential as a  
guitarist – whether you are an aspiring beginner or a  
more advanced player. With this in mind I set my  
experienced R&D team the task of designing a new  
range of affordable MG amplifiers, that truly capture  
the essence of the Marshall sound.  
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.  
F. NEVER use an amplifier in damp or wet conditions. No objects filled with liquids should be placed  
on the apparatus  
G. ALWAYS unplug this apparatus during lightning storms or when unused for long periods of time.  
Utilising new technologies, some of which were  
H. PROTECT the power cord from being walked on or pinched particularly at plugs,  
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 amp section of your MG30DFX combo boasts FDD (Frequency Dependent Damping) –  
a radical new feature that is exclusive to Marshall Amplification and accurately mimics the way an all-  
valve amplifier interacts with a loudspeaker. As a result of FDD, your new MG30DFX will give you a  
sound and feel never before thought possible in such an affordable, non-valve amp.  
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  
directive (Environments E1, E2 and E3 EN 55103-1/2) and the Low Voltage directive in the E.U.  
The DFX (Digital Effects) featured in the MG30DFX are custom-voiced by our in-house digital  
effects experts. Each one of the four effects on offer (Reverb, Delay, Chorus and Flange) has 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 two Digital FX controls (Preset/Adjust & FX Level) on the front panel,  
will give rise to sounds that range from subtle to radical, while always remaining both natural and  
musical.  
EUROPE ONLY - Note: The Peak Inrush current for the MG30DFX is 5 amps.  
CAUTION: Any changes or modifications not expressly approved by the party responsible for  
compliance may void the users authority to operate the equipment.  
Note: It is recommended that all audio cables used to connect to the MG30DFX are of a high  
quality screened type. These should not exceed 10 metres in length.  
WARNING: Always ensure free movement of air around the amplifier!  
Like all the amplifiers in the new MG range, state-of-the-art manufacturing and stringent quality  
control procedures ensure that this combo meets the high standard of build you have come to expect  
from all Marshall products. The MG30DFX was completely designed and engineered at my  
Headquarters in Milton Keynes, England.  
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.  
Whether the MG30DFX is your first ever Marshall or is the latest addition to your arsenal of amps,  
the tone, flexibility and feel of this compact, rugged combo will deliver the goods – from bedroom to  
backstage!  
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,  
1
2
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MG30DFX Front Panel Features  
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2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
1. FOOTSWITCH jack  
8. Overdrive Channel GAIN control  
13. Digital FX PRESET / ADJUST control  
Channels on the MG30DFX can be switched via  
the front panel CHANNEL SELECT switch (2) or  
via an optional footswitch. This jack socket is for  
the connection of the footswitch (P801).  
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 riffs.  
This control serves a dual purpose. Not only does it allow you to select one of the four types of  
effects on offer (Reverb (RVB), 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:  
2. CHANNEL SELECT switch  
Adjustable  
Parameter  
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 Overdrive channel.  
Effect  
Description  
9. Overdrive Channel BASS control  
Turning up this control will add extra low-end  
‘thump’ to high gain riffs and natural sounding  
warm depth to lower gain crunch tones. Using the  
Bass control in conjunction with the FDD switch  
(15) will allow you to dial in the exact amount of  
low-end ‘thump’ and tightness you are looking for.  
Reverb (RVB)  
Decay Time  
A natural sounding Reverb that never gets  
harsh or grainy. Short Reverb times produce a  
plate-type effect while longer Reverb times result  
in much larger sounding hall-type effects.  
(from short to long as you  
turn the Preset/Adjust  
control clockwise through  
the RVB segment)  
Note: When the Overdrive channel is selected,  
the OD LED (7) will light up red.  
3. INPUT jack  
Use a good quality guitar cable (i.e. one that’s  
screened/shielded) to plug your guitar in here.  
10. Overdrive Channel CONTOUR control  
Delay (DLY)  
Chorus (CHR)  
Flange (FLG)  
Delay Time  
Short Delay Times will automatically have less  
repeats for ‘groovy’ surf and rockabilly tones.  
Increasing the Delay Time automatically increases  
the number of repeats for a much more  
atmospheric, ‘stadium’ effect.  
(from short to long as you  
turn the Preset/Adjust  
control clockwise through  
the DLY segment)  
This highly effective tone control works by  
radically modifying the mid-range (body) of your  
sound. The tone can range 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.  
4. Clean Channel VOLUME control  
When the Clean Channel is selected, this  
control adjusts its volume. At low settings the  
sound will be very clean with a pleasing, bell-like  
ring. Turning this control above half way will  
introduce a desirable, bluesy distortion as the  
power amplifier stage is driven into ‘crunch mode’.  
Speed  
At slow Speeds a mellow phase-like sweep  
occurs. As the Speed is increased a more  
traditional chorus effect is heard. At maximum  
Speed, a psychedelic vibrato results.  
(from slow to fast as you  
turn the Preset/Adjust  
control clockwise through  
the CHR segment)  
11. Overdrive Channel TREBLE 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  
MG30DFX.  
5. 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 (15) to produce deep sounding, valve-like  
clean tones that are well defined yet still full and  
round.  
Speed  
At slow Speed settings the amount of  
regeneration is automatically increased for huge  
‘jet engine-like’ sweeps. As the speed is  
increased the regeneration decreases to produce  
a lush, natural sounding flange effect. When the  
Speed is maxed out, a fast vibrato results.  
(from slow to fast as you  
turn the Preset/Adjust  
control clockwise through  
the FLG segment)  
12. Overdrive Channel VOLUME control  
This control adjusts the volume of the Overdrive  
channel. The louder you make this channel, the  
‘looser’ your amp will sound and feel – especially  
with the FDD switch (15) engaged. This  
behaviour is exactly what a good all-valve  
amplifier does and is a result of our proprietary  
FDD circuitry.  
6. Clean Channel TREBLE control  
Increasing the Treble will make your clean  
sounds brighter and more cutting.  
7. OD LED  
When illuminated, this LED indicates that the  
Overdrive Channel has been selected.  
3
4
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Suggested Settings  
14. Digital FX LEVEL control  
17. EMULATED LINE OUT &  
HEADPHONES jack  
MG  
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  
dialed in? Then simply turn this control up!  
Here follows four sample settings to act as starting  
points from which to develop your own sounds.  
SERIES  
30DFX  
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  
MG30DFX 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! Using this jack  
automatically mutes your MG30DFX’s internal  
speaker allowing you to record or practice in  
‘silence’. For this very reason, this jack will be  
your neighbour’s favourite feature on your  
MG30DFX – along with the Power Switch (18),  
of course!  
N.B. Volume should be adjusted to taste.  
15. FDD (Frequency Dependent Damping)  
switch.  
Marshall’s proprietary FDD circuit accurately  
mimics the way an all-valve amplifier interacts  
with the loudspeaker 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.  
16. CD IN jack  
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.  
18. POWER Switch & LED  
Off  
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.  
HELPFUL HINT: for ‘silent’ recording merely  
plug an unconnected jack plug into the  
headphone socket and you’ll disconnect the  
MG30DFX’s internal speaker.  
Note: Before connecting to the mains  
electricity supply, always ensure that your  
electricity supply is compatible with your  
amplifier, as detailed on the rear panel.  
Please ensure the amplifier is switched off and  
unplugged from the mains electricity supply  
before being moved.  
On  
On  
On  
5
6
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Technical Specification  
Especificaciones técnicas  
Technische Daten  
MG  
SERIES  
30DFX  
Caractéristiques techniques  
Power Output  
30W RMS into 4  
Potencia de salida  
Ausgangsleistung  
Puissance de sortie  
30W RMS sobre 4Ω  
30W RMS an 4Ω  
30W RMS sous 4 ohms  
30W RMS / 4Ω  
Main Guitar • Input Impedance  
1MΩ  
Impedancia de entrada principal de guitarra  
Guitar • Input Eingangsimpedanz  
Impédance d'entrée  
1MΩ  
1MΩ  
1MΩ  
1MΩ  
CD Input • Input impedance  
3.3  
kΩ  
Impedancia de entrada de CD  
CD Input • Eingangsimpedanz  
Impédance d'entrée CD  
3.3kΩ  
3.3kΩ  
3.3kΩ  
3.3kΩ  
Emulated Output • Level  
+4  
dBV  
Nivel de salida de línea simulada  
Emulated Output • Ausgangspegel  
Niveau de sortie  
+4dBV  
+4dBV  
+4dBV  
+4dBV  
Weight  
9.6  
kg  
Peso  
9.6kg  
9.6kg  
9.6kg  
9.6kg  
Gewicht  
Poids  
Size (mm) Width, Height, Depth  
476mm x 408mm x 240mm  
Tamaño (mm)  
Maße (mm)  
Taille (mm)  
476mm x 408mm x 240mm  
476mm x 408mm x 240mm  
476mm x 408mm x 240mm  
476mm x 408mm x 240mm  
Marshall Amplification plc  
Denbigh Road, Bletchley, Milton Keynes, MK1 1DQ, England  
Tel : [01908] 375411 Fax : [01908] 376118  
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.  
230V  
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