Marshall Amplification EL84 20/20 Front Panel Features, EL84 20/20 Rear Panel Features, Inputs

EL84 20/20 Front Panel Features

LEVEL	PRESENCE	OFF
	OFF

		EL84 20/20
		STEREO VALVE POWER AMPLIFIER
010	010	ON	ON
	DEEP STANDBY POWER	STANDBY	POWER

ENGLISH

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1.Level Controls Level or volume of the EL84 20/20.

2.Presence Adds brightness and top end bite to your sound.

3.Deep The Deep switch on the 20/20 affects the speaker damping. By depressing the Deep switch you will add more bottom end thud to your guitar sound. Similar to the difference between open and closed back cabinets.

4.Standby LED Indicates operating status of standby (see 6).

5.Power LED Indicates operating status of amp

(see 7).

6.Standby Controls the H.T. supply to the valves and allows the valves to remain heated when not in use.

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7.Power On/Off Switch for mains power to the amplifier.

Note: To prolong the life of the valves it is always advisable to switch on the Mains Power Switch (item 7) about 1 minute before switching on the Standby (item 6). This allows the valves to heat up to full working temperature before use.

On switching off, the Standby should always be switched before the Power Switch.

The standby facility is particularly useful live, where before playing and between sets, it allows you to keep the valves operating at a slightly reduced temperature but without any sound being produced.

EL84 20/20 Rear Panel Features
MAINS INPUT
	LEFT OUTPUTS		RIGHT OUTPUTS		REMOTE SWITCHING		INPUTS
	2x20 Watts RMS
	POWER OUTPUT
	INTO 8/16 Ω
120V ~ 60Hz
220 WATTS	16Ω SPEAKER 8Ω	LINE	16Ω SPEAKER 8Ω	LINE	DEEP	LEFT	RIGHT(MONO)

1	2	3	4	5	6	7	8	9	10
1. Mains Input	Connects the amplifier to the mains			Note: When the 20/20 is in use, speakers must be
power supply.				connected to both sides at all times. See Loading points

Left Outputs

2.16 Ohm Jack Speaker jack for 16 Ohm speaker cabinet for left side of power amp.

3.8 Ohm Jack Speaker jack for 8 Ohm speaker cabinet for left side of power amp.

4.Line Attenuated version of speaker signal giving whole tone of power stage. For connection to subsequent effects processor and larger power amp.

Note: When 20/20 is in use, speakers must be connected to both sides at all times. See Loading points later.

Right Outputs

5.16 Ohm Jack Speaker jack for 16 Ohm speaker cabinet for right side of power amp.

6.8 Ohm Jack Speaker jack for 8 Ohm speaker cabinet for right side of power amp.

7.Line Attenuated version of speaker signal giving whole tone of power stage. For connection to subsequent effects processor and larger power amp.

Loading Points

-The 20/20 delivers 2x20 Watts into 8 or 16 Ohms.

-The 20/20 must have either an 8 Ohm or 16 Ohm speaker connected to either side. Under no circumstances should both the 8 and 16 Ohm sockets of the same side be used together.

-The 20/20 must have speakers connected to both sides when in use.

Remote Switching

8.Deep In addition to the front panel, the Deep facility can be switched remotely by a footswitch or programmable device, such as an effects processor.

It should be noted that this will override the front panel switch position.

Inputs

9.Left Takes the left input from a stereo pre-amp.

10.Right (Mono) Takes the right input from a stereo pre-amp, or the mono input from a mono pre-amp.

A mono input will drive both channels.

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