Marshall Amplification MG30DFX Front Panel Features, Reverb RVB Decay Time, Chorus CHR Speed

MG30DFX Front Panel Features

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1. FOOTSWITCH jack

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).

2. 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 Overdrive channel.

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.

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’.

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.

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.

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8. 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 riffs.

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.

10. Overdrive Channel CONTOUR control

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.

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.

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.

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13. Digital FX PRESET / ADJUST control

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:

Effect	Adjustable	Description
	Parameter
Reverb (RVB)	Decay Time	A natural sounding Reverb that never gets
	(from short to long as you	harsh or grainy. Short Reverb times produce a
	turn the Preset/Adjust	plate-type effect while longer Reverb times result
	control clockwise through	in much larger sounding hall-type effects.
	the RVB segment)
Delay (DLY)	Delay Time	Short Delay Times will automatically have less
	(from short to long as you	repeats for ‘groovy’ surf and rockabilly tones.
	turn the Preset/Adjust	Increasing the Delay Time automatically increases
	control clockwise through	the number of repeats for a much more
	the DLY segment)	atmospheric, ‘stadium’ effect.
Chorus (CHR)	Speed	At slow Speeds a mellow phase-like sweep
	(from slow to fast as you	occurs. As the Speed is increased a more
	turn the Preset/Adjust	traditional chorus effect is heard. At maximum
	control clockwise through	Speed, a psychedelic vibrato results.
	the CHR segment)
Flange (FLG)	Speed	At slow Speed settings the amount of
	(from slow to fast as you	regeneration is automatically increased for huge
	turn the Preset/Adjust	‘jet engine-like’ sweeps. As the speed is
	control clockwise through	increased the regeneration decreases to produce
	the FLG segment)	a lush, natural sounding flange effect. When the
		Speed is maxed out, a fast vibrato results.

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