Marshall Amplification JTM series Bedienungsanleitung

JTM

Valve Combos & JTM 600

Valve Head.

ENGLISH

From the Chairman

I would like to thank you personally for selecting

one of our JTM valve amplifiers.

For over thirty three years now my Company has

been recognised around the world as one of the

leading manufacturers of quality amplification. This

is a direct result of our continual investment in not

only research and development, but also people,

expertise and new production techniques to enable

us to design and manufacture consistently innovative

products, all of which are built to stand the rigours

of time.

Having been a musician myself for over fifty

years, I know that these things are important to all

musicians, but I also know that a major

consideration to any musician is the cost of

equipment. To this end I have made a conscious

effort to employ new techniques to keep the

production costs of the JTM range at as reasonable a

level as possible, without sacrificing any of the

Marshall trademarks such as tone and quality, with

which we would never compromise.

I would suggest that you read this handbook

carefully before operating your new JTM amplifier

and would like to wish you every success with your

new Marshall, which I am sure you will find a

pleasure to play for many years to come.

Yours sincerely,

WARNING!

Please read the following list carefully.

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. DO NOT obstruct airflow around the amplifier.

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

WARNING : This apparatus must be earthed!

JTM Range Introduction

Marshall Amplification has been inextricably linked with valve amplification

since our very beginning in 1962. Products such as the original Bluesbreaker

combos, JTM 45 and Super-Lead heads were all destined to be, and have

become, classics in their own right.

All of these special Marshalls produced their magical tone by driving the guitar

through an all valve pre-amp into a pure valve power-amp. The JTM series carry

on this grand tradition but meet the demands of contemporary guitarists by

providing features such as channel switching, reverb, effects loop and speaker

emulated output.

Using Your JTM Amplifier

Your JTM Valve combo or head is easily capable of producing a wide range of

usable quality tones, from glassy vintage clean, Bluesbreaker type singing lead

and crunchy chord work to full blown modern high gain crush. What’s more the

controls are simple and intuitive to use giving you instant access to memorable

Marshall tones.

Whilst one should always bear in mind that taste in tone is a very subjective

matter, the following suggestions will give you a good starting point for getting

some great sounds from your JTM amplifier.

Clean

Make sure you select the Normal channel which is indicated by the green

L.E.D. The strength and height of your pick-ups will have a great influence on

the level you should set the volume on this channel before overdrive sets in.

Generally speaking the volume control should be set below half way for totally

clean sounds.

The tone network should be set with all three controls at 5 initially, then

adjusted to suit the type of guitar and sound required. Generally single coil

pickups will require extra bass and middle to give the sound more body, but

humbuckers may well require less middle and extra treble to cut through.

ENGLISH

Vintage Overdrive

Switch to the Boost channel which is indicated by the Red L.E.D. Again pickups

will obviously influence settings but you will probably find that gain settings of

around 5 or 6 are quite adequate, the key however is to increase the master volume

level. As our vintage amps didn’t really have a lot of pre-amp gain guitarists used

to crank the volume up to be heard which resulted in the natural classic Marshall

overdrive roar. Alternatively the Normal Channel with its volume on maximum

gives a very satisfying vintage type overdrive.

As far as tone settings go we would suggest that you start with the tone controls

set at about 5 and then adjust to taste from there. The selection of tone settings for

single coil or humbucking pickups will follow the same general pattern as for the

clean sound.

Modern Hi-Gain

Switch to the Boost channel indicated by the Red L.E.D.

Turn the gain up to full and set the volume for the desired level. Tone controls are

set to taste, though probably with the Middle control lower than the Bass and

Treble controls particularly to maintain the definition when using humbucking

pickups.

The best advice we could really offer is to simply experiment and above all enjoy

the pure valve tone of your Marshall JTM amplifier.

JTM 30 Front Panel Functions.

1) Footswitch Jack

Jack socket for connection of P801 Footpedal for channel switching.

2) Push Channel Switch

Push switch for panel switching of the

channel. The push switch is inoperative

when the footswitch is connected.

3) Input Jack

Jack socket for the input of the guitar.

4) Volume Control

Controls the volume of the Normal channel.

5) L.E.D.

Indicates channel. Green-Normal Red-Boost.

6) Gain Control

Controls the amount of Gain on the Boost

channel.

7) Volume Control

Controls the volume of the Boost channel.

8) Bass Control

Dictates the amount of low frequency or bottom

end in the overall tone.

9) Middle Control

Controls the middle frequencies and fatness of

the overall tone.

10) Treble Control

Controls the upper or treble frequencies in your

tone.

Please Note

The Tone Controls are interactive and adjusting

one can affect the relative amounts of the

others. Experimentation is the best way of

finding your own personal favourites.

11) Effects Send Jack

Jack socket for connection to the input of an

external effects processor.

12) Effects Return Jack

Jack socket for the connection from the output

of an external effects processor.

3030

ENGLISH

13) Reverb Control

Controls the amount of Reverb on both

channels.

14) Volume

Controls the master or overall volume of the

JTM 30.

15) Standby Switch

Controls the H.T. supply to the valves and

allows the valves to remain heated when not

in use.

16) Power Switch

On/Off switch for mains power to the

amplifier.

Note

Switch on the Mains Power Switch (item 16)

about 2 minutes before switching on the

Standby (item 15).

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.

JTM 30 Rear Panel

Functions.

1) Mains Fuse

Protects the amplifier and mains supply in the

event of a fault.

2) Mains Input

Connects the amplifier to the mains power

supply.

3) Emulated Output

The Emulated Output captures the tonality of

Vintage loudspeakers like no other D.I.

output. Furthermore this output is unaffected

by the Master Volume control, therefore

allowing the JTM 30’s output to be turned off

whilst still providing silent recording

facilities.

The D.I. output is via an XLR type connector,

which allows this system to be fed into either

(a) a line level balanced input, (b) a line level

unbalanced input or (c) a low level

unbalanced.

Please Note

Please refer to the JTM XLR Out diagram

(Page 6) for correct connections.

4) Internal Speaker Output Jack

For connection to internal 16 Ohm speaker.

5) External Speaker Output Jack

For connection to an external 16 Ohm

speaker only (such as the Marshall JTM C112

1x 12” extension cabinet).

Please Note

The JTM 30 will deliver 30 Watts into either

one or two 16 Ohm speakers, ie 16 or 8 Ohm

total impedance. The unit should not be

driven into a load of less than 8 Ohms.

JTM 610, 612, 615,

622 and JTM 600 Head

Front Panel Functions.

1) Footswitch Jack

Jack socket for connection of

P801 Footpedal for channel

switching.

2) Push Channel Switch

Push switch for panel switching of the

channel. The push switch is inoperative when

the footswitch is connected.

3) Input Jack

Jack socket for the input of the guitar.

4) Volume Control

Controls the Volume of the Normal channel.

5) Bass Control

Controls the lower frequencies or bottom end

in the tone of the Normal channel.

6) Middle Control

Controls the middle frequencies and fatness

of the tone of the Normal channel.

7) Treble Control

Controls the upper or treble frequencies in the

tone of the Normal channel.

8) L.E.D.

Indicates channel. Green-Normal Red-Boost.

9) Gain Control

Controls the amount of Gain on the Boost

channel.

✪

JAPANESESPANISHGERMAN

FRENCH

ENGLISH

10) Volume Control

Controls the volume of the Boost channel.

11) Bass Control

Controls the low end frequencies in the tone

of the Boost channel.

12) Middle Control

Controls the middle frequencies in the tone

of the Boost channel.

13) Treble Control

Controls the upper or treble frequencies in

the tone of the Boost channel.

Please Note

The Tone Controls are interactive and

adjusting one can effect the relative amounts

of the others. Experimentation is the best

way of finding your own personal favourites.

14) Parallel Effects Mix Control

Governs the amount of effected signal in the

overall tone when used in conjunction with

external effects through the parallel loop (see

items 3 and 4 of the JTM 60 rear panel

functions).

15) Normal Reverb

Controls the amount of Reverb on the

Normal channel.

16) Boost Reverb

Controls the amount of Reverb on the Boost

channel.

17) Volume

Controls the overall volume of the combo.

18) Standby Switch

Controls the H.T. supply to the valves and

allows the valves to remain heated when not

in use.

19) Power Switch

On / Off Switch for mains power to the

amplifier.

Please Note

To prolong the life of the valves it is always

advisable to switch on the Mains Power

Switch (item 19) about 2 minutes before

switching on the Standby (item 18).

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.

JTM 610, 612, 615,

622 and JTM 600 Head

Rear Panel Functions.

1) Mains Fuse

Protects the amplifier and mains supply in

the event of a fault.

Check the label on the back of the amp for

the correct value. Always replace fuses with

the correct type and rating. It is a wise

precaution to always carry spares.

2) Mains Input

Connects the amplifier to the mains power

supply.

3) Parallel FX Loop Return Jack

Jack socket for connection from the output of

an external effects processor.

Please Note

A parallel FX Loop is best suited for use

with external effects processors which

require a certain amount of dry or uneffected

signal in the overall tone. Time based effects

such as Delay and Chorus are typical

examples of the effects best suited to this

type of Loop.

4) Parallel FX Loop Send Jack

Jack socket for connection to the input of an

external effects processor.

5) Series FX Loop Return Jack

Jack socket for connection to the output of an

external effects processor.

6) Series FX Loop Send Jack

Jack socket for connection to the input of an

external effects processor.

Note: The Series Loop is best suited to

effects that require no dry signal such as

Compressors or Graphic Equalisers.

7) D.I. Output

The JTM60’s D.I. Out is switchable between

a speaker Emulated signal (pre the power

amp), and a non Emulated (post the power

amp ) signal.

The Emulated Output captures the tonality of

Vintage loudspeakers like no other D.I.

furthermore this output is unaffected by the

Master Volume controls therefore allowing

the JTM 60’s output to be turned off whilst

still providing silent recording facilities.

FRENCH JAPANESE

SPANISH

GERMAN

ENGLISH

The D.I. Output is via an XLR type connector

which allows this system to be run into either

(a) a line level balanced input (b) a line level

unbalanced input or (c) a low level

unbalanced input.

Please Note

Refer to the JTM XLR Out diagrams

(Below) for correct connections.

8) Pre/Post Switch

Allows Line Out selection between a speaker

Emulated signal (pre the power amp) and

non-emulated (post the power amp).

9) Presence Control

This Master Presence control adjusts the

amount of top end frequencies in the overall

tone - adding crispness and bite.

10) Speaker Output

On combo formats of the JTM 60 this jack is for

connection to the internal 16 Ohm speaker. On

the JTM 600 Head this socket is for connection

to an external speaker cabinet, such as the

purpose built JTM C410 compact 4x10” cabinet.

11) Speaker Output

For connection to an external 16 Ohm

speaker (The Marshall JTM C12 1x12” and

JTM C212 2x12” cabinet are designed for use

with JTM 60 combos).

On the JTM 600 head this output could drive

a second JTM C40 cabinet.

Note

The JTM 60 combos and head will deliver 60

Watts into either one or two 16 Ohm

speakers, ie. 16 or 8 Ohm total impedance.

The unit should not be driven into a load of

less than 8 Ohms.

If you unplug the internal loudspeaker in a

JTM 60 combo it is possible to connect a

single 8 Ohm cabinet to the extension

Speaker Output only. However, when the

internal speaker is connected only a 16 Ohm

extension cabinet may be used.

It is important to follow these instructions as

failure to do so may lead to the amp running

into the wrong impedance, which will

ultimately cause damage.

✪

JTM XLR Out diagram

XLR Channel Input

On Mixer

(Note: Line Level-

Approx OdBV)

2 Core Screened Balanced Mic Lead

Unbalanced XLR to Jack Screened Lead

Jack Plug Line Level Jack Input On Mixer Etc.

Jack Plug

Low Level Jack Input On Mixer (ie

Mic Input)

✪

MAINS FUSE

230V—T1.6A

120V—T3A

CAUTION! Replace fuse with same type and

rating only disconnect mains supply before

opening.

ATTENTION! Replacer le fusible par le

meme type et le meme calibre Debrancher a la

prise secteur avant D,ouvrir.

WARNING! No user serviceable parts inside; refer

servicing to qualified personnel only.

AVIS! Risque de choc. Ne pas ouvrir.

WARNING! Fire & Shock Hazard: Do not expose

this unit to rain or moisture. This Apparatus Must Be

Earthed. Do not open.

OUTPUT

EMULATED

OUTPUT

Pin 1—OV

Pin 2—High

Pin 3—Low

Refer to manual

for details Internal Extension

Manufactured in Great Britain by:

Marshall Amplification plc, Bletchley,

Milton Keynes, England.

30 watts RMS into 8/16Ω.

16Ωextension speaker

16Ωinternal speaker

(Refer to manual for details)

MAINS INPUT

230V ~50 Hz

160 Watts

BOOST

VOLUME

STANDBY

POWER

FOOT

SWITCH TONE

BASS MIDDLE TREBLE SEND RETURN REVERB VOLUME

LOOP MASTER

VOLUME

INPUT

2 8

10 0

2 8

10 0

2 8

10 0

2 8

10 0

2 8

10 0

2 8

PUSH

CHANNEL

RED

GREEN

10 0

2 8

GAIN

NORMAL

3030

JTM 30 Front Panel

JTM 30 Rear Panel

1 2 4 6

5 7 9 11 12 13 14 15 16

34 5

1 2

MAINS INPUT

230V ~ 50 Hz 160 Watts

MAINS FUSE

120V—T3A

230V—T1.6A

WARNING!No user serviceable parts inside; refer servicing to qualified personnel only.

AVIS! Risque de choc. Ne pas ouvrir.

WARNING! Fire & Shock Hazard:

Do not expose this unit to rain or moisture. This Apparatus Must Be Earthed. Do not open.

CAUTION! Replace fuse with same type and rating only disconnect mains supply before opening.

ATTENTION! Replacer le fusible par le meme type et le meme calibre Debrancher a la prise secteur

avant D,ouvrir.

Manufactured in Great Britain by:

Marshall Amplification plc, Bletchley, Milton

Keynes, England.

60 watts RMS into 8/16 .

16 extension speaker

16 internal speaker

(Refer to manual for details)

PARALELL

FX LOOP SERIES

FX LOOP

Return ReturnSend Send

D.I.OUTPUT

Pin 1—OV, Pin 2—High, Pin 3—Low (Refer to manual)

Presence

Emulated

PWR Amp

Line Out

OUTPUT

Internal Extension

VOLUME BASS MIDDLE TREBLE NORMAL

REVERB BOOST

REVERB VOLUME

BOOST MASTER

—

10 0

—

10 0

—

10 0

—

10 0

—

10 0

—

10 0

—

10 0

—8

STANDBY

POWER

GAINVOLUME

NORMAL BASS MIDDLE TREBLE

10 0

—

10 0

—

PUSH

CHANNEL

FOOT

SWITCH INPUT

RED

GREEN

200

—8

(Parallel Mix)

EFFECTS

JTM 60 Front Panel

JTM 60 Rear Panel

1 2 4 6

5 7 9 10 11 12 13 14 15 16 17 18 19

1 2

345678 9 10 11

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