Marshall JCM 900 manual

Marshall JCM 900
6.8 · 3
PDF manual
 · 4 pages
English
manualMarshall JCM 900

FRONT PANEL

REAR PANEL

8 9 10 11 12

13
14
0
1
POWER STANDBY
VOLUME REVERB VOLUME REVERB PRESENCE BASS MIDDLE TREBLE LEAD GAIN GAIN
INPUT
FOOT
SWITCH
MASTER
(CH. B)
PUSH ON
(CH. B)
MASTER
(CH. A)
PREAMP
(CH. B)
PREAMP
(CH. A)

JCM900

100W Hi Gain Dual Reverb
Model 4100
2
010
46
8 2
010
46
8 2
010
46
8 2
010
46
8 2
010
46
8 2
010
46
8 2
010
46
8 2
010
46
8 4
020
812
16 2
0
10
46
8
MAINS INPUT FUSE
120V ~ 60Hz
375 Watts
EFFECTS
SEND
HIGH LOW
LOOP
LEVEL
RETURN RECORDING
COMPENSATED
DIRECT
(4)16 8 HIGH LOW
FAIL
OPV-1-4 OPV-2-3
DO NOT USE WITHOUT CONNECTING SPEAKER LOAD
SEE MANUAL FOR CORRECT OPERATION AND RATING
T500mA T500mA
220/240V - T2A
110/120V - T4A
FAIL
LINE OUTPUT POWER LEVEL OUTPUT
OUTPUT
VALVE FUSE
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 APPAREILA L’HUMIDITE
OU A LA PLUIE. CONNECTER CET APPAREIL A LA TERRE.
CAUTION!:
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 DE DECHARGES ELECTRIQUES, NE PAS
OUVRIR LE COUVERCLE. CET APPAREIL NE COMPORTE AUCUNE PIECE SUSCEPTIBLE D’ETRE
REPAREE PAR VOS SOINS. FAITES TOUJOURS APPELA UN TECHNICIEN QUALIFIE POUR TOUTE
REPARATION.
OUTPUT:
100 WATTS RMS INTO 8
!
Made in England by
Marshall Amplification plc,
Bletchley, Milton Keynes, England.
IMPEDANCE
SELECT MODE
LOUDSPEAKERS
100W R.M.S.
WARNING:
DO NOT OBSTRUCT VENTILATION GRILLES
ATTENTION:
NE PAS OBSTRUER LES GRILLES DE VENTILA
TION
7654321
1215 14 11 10 9 8 7 6 5 4 3 2 113

Manual

View the manual for the Marshall JCM 900 here, for free. This manual comes under the category guitar amplifiers and has been rated by 3 people with an average of a 6.8. This manual is available in the following languages: English. Do you have a question about the Marshall JCM 900 or do you need help? Ask your question here

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Question and answer

Number of questions: 2
P
paul chumleyAugust 16, 2023

I have aJCM900 4501 combo. Speaker Celestion G12T75. What is the impedance of the speaker, please? Which setting do I switch the impedance (i.e. 8 or 4(16).

G
GregNovember 11, 2023

what order do mixed matched power tube amps go in

Marshall JCM 900 specifications

Below you will find the product specifications and the manual specifications of the Marshall JCM 900.

The Marshall JCM 900 guitar amplifier is a highly regarded amplifier known for its powerful and versatile performance. It is designed to deliver a rich and dynamic sound that suits a wide range of musical styles. The JCM 900 features a solid construction, ensuring durability and longevity. It is built with high-quality materials that contribute to its reliability and robustness. Equipped with a range of controls, this amplifier allows musicians to customize their sound to their liking. It offers various tone-shaping options including gain, bass, middle, treble, and presence controls. These controls enable precise adjustment of the amplifier's sound characteristics, allowing musicians to achieve the desired tone. The JCM 900 produces a significant amount of power, making it suitable for both small studio sessions and larger live performances. It is equipped with multiple input and output options, providing flexibility for connecting to external devices such as effects pedals or recording equipment. The amplifier's design is simple and straightforward, making it easy to operate. It offers a reliable and consistent performance, allowing musicians to focus on their music without worrying about technical issues. Overall, the Marshall JCM 900 guitar amplifier is a highly capable and reliable amplifier that delivers excellent sound quality. It is a popular choice among musicians looking for a versatile and powerful amplifier to enhance their performances.

General
BrandMarshall
ModelJCM 900
Productguitar amplifier
LanguageEnglish
FiletypeUser manual (PDF)

Frequently Asked Questions

Can't find the answer to your question in the manual? You may find the answer to your question in the FAQs about the Marshall JCM 900 below.

Why is my Marshall JCM 900 not producing any sound?

Make sure the power switch is turned on, verify that all cables are securely plugged in, and check that the volume and gain knobs are properly adjusted.

How can I achieve a higher volume level from my amp?

Increase the master volume control, while also adjusting the individual channel's volume knobs to find the desired balance.

What should I do if my guitar tone sounds distorted or muddy?

Try reducing the gain or overdrive settings, adjust the equalizer settings to enhance clarity, and ensure proper speaker impedance matching.

What is the purpose of the effects loop on the amp and how do I use it?

The effects loop allows you to connect external pedals or rack-mounted effects. Simply connect the send and return jacks correctly, making sure the effects are active and properly adjusted.

How can I safely switch between different speaker outputs on my amplifier?

Ensure the amplifier is powered off before connecting or disconnecting speakers. Make sure the impedance selector is properly set for the speakers used and avoid using a lower impedance than recommended.

Is the manual of the Marshall JCM 900 available in English?

Yes, the manual of the Marshall JCM 900 is available in English .

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