background image

Marshall Amplification plc,

Denbigh Road, Bletchley, 

Milton Keynes, MK1 1DQ

England

TEL: (0908) 375411 

FAX: (0908) 376118

Whilst the information contained herein is correct at

the time of publication; due to our constant

improvement and development, Marshall

Amplification plc reserve the right to alter

specifications without prior notice.

M0061/93/4/A

SL-X MASTER VOLUME 

& DUAL REVERB 

HANDBOOK

SL-X hbk  4/3/05  12:22 pm  Page 8

Summary of Contents for JCM 900 valve series

Page 1: ...SL X MASTER VOLUME DUAL REVERB HANDBOOK ...

Page 2: ...in our product ranges over the years Our latest development of the Master Volume amplifier the JCM 900 MK 4 SL X uses an extra valve in the pre amp to offer more gain and tone than we thought possible just a short time ago In all the JCM 900 models there are degrees of innovation to give extra high gain wider tone control and greater connection flexibility to provide you with the widest possible s...

Page 3: ...ions G ALWAYS ensure that the impedance of the amplifiers speaker or speakers connected does not fall below the minimum impedance rating I PLEASE READ this instruction manual carefully before switching on INTRODUCTION Marshall have specialised in the production of valve amplification since 1962 The unique tone and playing response of the valve has formed the cornerstone of the Marshall Sound of Ro...

Page 4: ... contemporary screaming solos on maximum Channel master volumes items 9 11 and individual channel reverb controls items 8 10 give you incredible control and all round versatility in either head or combo form VALVE OUTPUT POWER The JCM 900 range use high quality 5881 output valves x2 in 50 Watt models x4 in 100 Watt models for their unique distortion properties and fluid tone With most valve amplif...

Page 5: ...ment to the amplifier A high quality screened lead must be used 2 Channel A Pre Amp Gain Control Sets the gain level for channel A Lower settings give clean sounds higher settings for medium drive and crunch rhythm 3 Channel B Lead Gain Control Sets the gain level for boosted Channel B Lower settings give slight overdrive higher settings for maximum drive and sustain 4 5 6 7 Treble Middle Bass Pre...

Page 6: ...d output i e 25 Watts on 50 Watts models or 50 Watts on 100 Watt models The high power position gives pentode operation for the full rated output 9 Valve Failure L E D Indicates red when output valve fails and causes valve fuse item 10 to operate 10 Valve Failure Fuse Operates in the event of an output valve failure and prevents any internal damage to the amplifier NOTE On 50 Watt models items 11 ...

Page 7: ...E DUAL REVERB REAR PANEL 8 7 6 5 4 3 2 1 8 9 10 11 12 13 14 7 6 5 4 3 2 1 NOTE On Combo models the rear panel is reversed NOTE On Combo models the front panel is reversed JCM 900 SL X HI GAIN MASTER VOLUME FRONT PANEL 13 12 11 10 9 8 7 6 5 4 3 2 14 13 12 11 10 9 1 15 ...

Reviews: