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JTM Series
JTM60
Valve Combo
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.
Jan '99
Handbook
1
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Summary of Contents for Marshall Amplification JTM60
- Page 1 JTM Series JTM60 Valve Combo 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.
- Page 2 PLEASE read this instruction manual carefully before switching on. Introduction Using the JTM 60 The JTM 60 is easily capable of producing a Marshall Amplification has been wide range of usable quality tones, from glassy inextricably linked with valve amplification vintage clean, Bluesbreaker type singing lead since our very beginning in 1962.
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Page 3: Front Panel Functions
Vintage Overdrive: Switch to the Boost 8) L.E.D. channel which is indicated by the red L.E.D. Indicates channel. Green-Normal Again pickups will obviously influence Red-Boost. settings but you will probably find that Gain settings of around 5 or 6 are quite adequate, 9) Gain Control the key however is to increase the Master Controls the amount of Gain on the Boost... -
Page 4: Rear Panel Functions
Compressors or Graphic Equalisers. 7) Line Out The JTM60’s Line Out is switchable between a speaker Emulated signal (pre the power amp), and a non Emulated (post the power amp ) signal. - Page 5 Replacer le fusible par le meme type et le meme calibre Debrancher a la prise secteur avant D,ouvrir. Manufactured in Great Britain by: MAINS INPUT 230V ~ 50 Hz 160 Watts Marshall Amplification plc, Bletchley, Milton Keynes, England. JTM 60 XLR Out diagram XLR Channel Input On Mixer...
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Questions and answers
Marshall jtm60 Speaker Bias Adjustment Manual
To adjust the speaker bias on the Marshall JTM60:
1. Use a multimeter to measure current.
2. Probe the orange wire going to the internal speaker jack.
3. Ground the multimeter to the chassis.
4. The reading will show the total current for both tubes, so divide the value by 2 to get the current per tube.
5. Adjust the bias pot, located at the end of the circuit board, to set the correct bias current.
Note: Be cautious when working inside the amp due to high voltages.
This answer is automatically generated