Marshall Amplification JTM30 Handbook

JTM Series

JTM30

Valve Combo

Handbook

1

Marshall Amplification plc

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

Tel: [phone]

Fax: [phone]

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.

Jan ‘99

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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.

ALWAYS wire the plug according to the colour code attached to the

mains lead.

C.

NEVER under any circumstances operate the amplifier without an

earth.

D.

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

E.

NEVER attempt to replace fuses or valves with the amplifier connected

to the mains.

F.

DO NOT attempt to remove the amplifier chassis, there are no user

serviceable parts.

G.

ALWAYS have this equipment serviced or repaired by competent

qualified personnel.

H.

NEVER use an amplifier in damp or wet conditions.

I.

DO NOT switch the amplifier on without the loudspeaker connected

and ensure that any extension cabinets used are the correct impedance.

J.

DO NOT obstruct airflow around amplifier.

K.

PLEASE read this instruction manual carefully before switching on.

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 30 carries on this
grand tradition but meets the demands of contemporary guitarists by
providing features such as channel switching, reverb, effects loop and
Speaker Emulated output.

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