Marshall Amplification JCM 2000 DSL50 Manual de usuario

JCM 2000

DSL50 &DSL100

Heads

Handbook

Marshall Amplification plc

Denbigh Road, Bletchley, Milton Keynes, MK1 1DQ, England

Tel: (01908) 375411

Fax: (01908) 376118

Web Site - http://www.marshallamps.com

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.

Nov ‘98

WARNING !

A. ALWAYS fit a good quality mains plug conforming to the latest B.S.I. standards where

necessary (UK only).

B. NEVER attempt to by-pass the fuses or fit ones of the incorrect value.

C. NEVER attempt to replace fuses or valves with the amplifier connected to the mains.

D. DO NOT attempt to remove the amplifier chassis, there are no user serviceable parts.

E. ALWAYS have this equipment serviced or repaired by competent qualified personnel.

F. NEVER use an amplifier in damp or wet conditions.

G. DO NOT switch the amplifier on without the loudspeaker connected.

H. ENSURE that any extension cabinets used are of the correct impedance.

I. PLEASE read this instruction manual carefully before switching on.

WARNING : This apparatus must be earthed !

WARNING : Do not obstruct ventilation grille and always ensure free movement of air around the

amplifier !

The Marshall 1959 Super Lead Plexi head and the JCM 800 Master Volume 2203 are

recognised the world over as benchmarks in tone, feel, musical power and sheer size of sound.

Imagine then, an amp which is like two footswitchable 1959 Super Leads in one, with the

addition of reverb plus extra gain to take you into 2203 territory and beyond. If this sounds like

a dream, it is no longer - now that the JCM 2000 Dual Super Lead range is here.

The 100 Watt DSL 100 and 50 Watt DSL 50 Dual Super Lead heads feature two

footswitchable channels, Classic Gain / Channel A and Ultra Gain / Channel B. As the names

imply, each channel has a very different character, with Classic Gain / Channel A taking you

from a clean to crunch 1959 and then, via a mode switch, up to a 2203 style brute. Ultra Gain /

Channel B takes you from a hot rodded 2203, via a mode switch, to a higher gain response with

the addition of mid-boost. Each channel also has its own individual Reverb level.

The amps also feature a Deep Switch and Tone Shift which are common to both channels.

The Deep Switch adds a resonant bass boost to your sound without muddying it up, while the

Tone Shift selector shifts out the mid frequencies making the amp ideal for brutal metal tones,

especially when combined with high gain settings.

Their all round versatility and sheer size of sound make the DSL 100 and DSL 50 superb

performance tools for today’s most demanding playing situations and you can rest assured they

are packed full of the famed Marshall TONE.

Please read this handbook carefully before plugging in.

JCM 2000 Introduction

TREBLE

MIDDLE

EQUALISATION

BASS CHANNEL B CHANNEL A GAIN CHANNEL VOLUME

CLEAN

CRUNCH

POWER STANDBY GAIN

INPUT

REVERB ULTRA GAIN

/ CHANNEL B

CLASSIC GAIN

/ CHANNEL A

TONE SHIFT

LEAD 1

LEAD 2

DEEP

PRESENCE

OFF

VOLUME

DSL 100

DUAL SUPER LEAD

JCM 2000

1 2 3456 7 9

10 11 13 15 17 19 20

812 14 16 18

DSL 100 & DSL 50

Front Panel functions

1. Power Switch

On / Off Switch for mains power to the amplifier.

2. Standby Switch

Controls H.T. or high voltage to the valves to

allow them to attain correct working temperature

before playing. To prolong the life of the valves it is

always advisable to switch on the Mains Power

Switch (item 1) about 2 minutes before switching on

the Standby (item 2).

On switching off, the Standby should always be

switched before the Power Switch.

The standby facility is particularly useful live

between sets and before playing, as it allows you to

keep the valves operating at a functional temperature

but without any sound being produced.

3. Deep Switch

The Deep Switch adds a tuned or resonant bass

boost to your sound, increasing bottom end thud,

without making your tone woolly around the all

important low end.

4. Presence Control

Adds higher frequencies to the guitar tone, creating

crispness and bite. Turning this up will make the

sound more cutting and in your face.

5. Treble Control

Controls the high frequencies of the guitar tone,

making your guitar sound brighter when increased.

6. Middle Control

Dictates the middle register of the amplifier.

Turning this up will make your guitar sound fatter.

Conversely reducing the amount of middle in your

tone will result in a sharper and thinner guitar sound

for the classic “scooped” tone.

7. Bass Control

Controls the amount of low frequencies or bottom

end in your tone.

8. Tone Shift

The Tone Shift Switch reconfigures the tone

network components to give a new dimension to

passive tone shaping. With the switch selected to the

“in” position and the Middle Control (item 6) turned

down the result is a scooped mid sound ideal for

certain classic metal styles.

Reverb

9. Channel B

Controls the reverb level on Channel B.

10. Channel A

Controls the reverb level on Channel A.

Ultra Gain / Channel B

11. Volume

Governs the volume level of Channel B.

12. Lead 1 / Lead 2 Switch

The DSL 100 and DSL 50‘s Channel B features

two modes. The first, Lead 1, gives an open high

gain crunch, with traditional Marshall characteristics,

similar to a hot-rodded JCM 800 2203 master

volume. The Lead 2 mode however gives a mid-

boosted tone coupled with even higher gain

possibilities.

13. Gain

Controls the gain level for Channel B. As the

amount of gain increases so will the distortion level in

your sound.

14. LED

Indicates when Channel B has been selected.

15. Channel Switch

Selects Channel A or Channel B.

16. LED

Indicates when Channel A has been selected.

Classic Gain / Channel A

17. Volume

Governs the volume level of Channel A

18. Clean / Crunch

As with Channel B, Channel A features two

modes. The first, Clean, is reminiscent of an early

1959 Plexi Super Lead head. Depending on Gain

settings (item .19) this mode will take you from clean

to a controlled Plexi style crunch. Crunch will take

you up to a JCM 800 2203 style grind.

19. Gain

Controls the gain level for Channel A. As the

amount of gain increases so will the distortion level in

your tone.

20. Input

Jack input for guitar.

DSL 100 & DSL 50 Rear Panel functions

Footswitch

1. Channel

By connecting the supplied PED801 footswitch to

this jack it is possible to footswitch between Channel

A and Channel B. The footswitch will override the

front panel Channel switch position (item 15).

2. Reverb Footswitch

By connecting another PED801 footswitch

(optional) to this jack it is possible to remotely switch

reverb on and off.

Effects Loop

3. Send

For connection to the input of an external effects

processor.

4. Return

For connection from the output of an external

effects processor.

5. Loop Level

The loop level on the DSL 100 and DSL 50 can be

adjusted to match either floor pedals, requiring a low

level or effects processors which require a high level.

Loudspeaker Outputs

With all valve amplifiers it is imperative that the

amp is connected to a load whilst in operation and

that the impedance selected on the amp matches the

total impedance of the speaker cabinet(s) being used.

For example, if the amp is running into a single 16

Ohm cab, the amp should accordingly be set to 16

Ohms. If running into two 16 Ohm cabs, the amp

should be set to 8 Ohms. If running into two 8 Ohm

cabs the amp should be set to 4 Ohms.

Failure to comply with these points will result in

damage to the amplifier.

The DSL 100 and DSL 50 feature three outputs, a

dedicated 16 Ohm output and two outputs selectable

between 4 and 8 Ohms.

The DSL 100 and DSL 50 should be run into a

minimum impedance of 4 Ohms.

6. 16 Ohm Output

For the connection of a 16 Ohm speaker cabinet.

It should be noted that when this Speaker Output is in

use the remaining Speaker Outputs, items 7 and 8,

will become inoperational.

7. & 8. 4 & 8 Ohm Outputs

For use when the total impedance of speaker

cabinets used is either 4 or 8 Ohms. That is, when

using either a single 4 Ohm cab, a single 8 Ohm, two

8 Ohm cabs or two 16 Ohm cabs.

9. Impedance Selector

Allows selection of 4 or 8 Ohms impedance for

items 7 & 8.

See Loading Points.

10. Mains fuse

See rear panel for correct value.

11. Mains Input

For connection to mains supply.

12. H.T. fuse

See rear panel for correct value.

Loading Points

One 4 Ohm cabinet, set to 4 Ohms

One 8 Ohm cabinet, set to 8 Ohms

Two 8 Ohm cabinets, set to 4 Ohms

Two 16 Ohm cabinets, set to 8 Ohms

N.B. Always ensure that proper speaker leads are

used to connect speakers to the DSL 100 and DSL 50,

not guitar leads!

WARNING !

If loudspeaker is disconnected a high voltage can

be present at these output terminals. Operation in

this manner can damage your amplifier, therefore

ensure that loudspeaker is properly connected.

WARNING : RISK OF HAZARDOUS ENERGY!

AVIS : ENERGIE ELECTRIQUE DANGEREUSE!

EFFECTS LOOP LOUDSPEAKER OUTPUTS

FOOTSWITCH

CHANNEL REVERB

100 Watts RMS

4 Ohm / 8 Ohm

16 Ohm ONLY HT

FUSE

(T1A)

MAINS

FUSE

(T2A - 230V)

(T4A - 120V)

SELECT

Made in England by:

Marshall Amplification plc,

Bletchley, Milton Keynes,

England.

MAINS INPUT

120V ~ 60 Hz

375 Watts

RETURN

SEND LOOP

LEVEL

CAUTION!:

TO REDUCE THE RISK OF FIRE REPLACE FUSES WITH THE SAME TYPE

AND RATING ONLY. DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE.

TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER. NO USER

SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

ATTENTION!:

POUR EVITER LES RISQUES D’INCENDIE UTILISER UN FUSIBLE DE

MEME TYPE ET DE MEME CALIBRE. DEBRANCHER AVANT DE REMPLACER LE FUSIBLE.

POUR EVITER LES RISQUES DE DECHARGES ELECTRIQUES, NE PAS OUVRIR LE

COUVERCLE. CET APPAREIL NE COMPORTE AUCUNE PIECE SUSCEPTIBLE D’ETRE

REPAREE PAR VOS SOINS. FAITES TOUJOURS APPEL A UN TECHNICIEN QUALIFIE POUR

TOUTE REPARATION.

WARNING!:

SHOCK HAZARD. DO NOT OPEN. TO REDUCE THE RISK OF FIRE OR

ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. THIS

APPARATUS MUST BE EARTHED.

AVIS!:

RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR. POUR EVITER LES RISQUES

D’INCENDIE ET DE DECHARGES ELECTRIQUES, N’EXPOSEZ JAMAIS CET APPAREIL A

L’HUMIDITE OU A LA PLUIE. CONNECTER CET APPAREIL A LA TERRE.

8 Ohm PARALLEL JACKS)

Note:

16 Ohm Output Jack negates use of others.

REFER TO MANUAL FOR FULL DETAILS. SE REFERER AU MANUEL POUR PLUS DE DETAILS.

WARNING!:RISK OF HAZARDOUS ENERGY!

AVIS!:ENERGIE ELECTRIQUE DANGEREUSE!

24 5 6 7 8 9 10 11 12

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