All images and text copyrighted and property of Greg Gagliano.

FACTOIDS & TRIVIA

The JTM-45 was an iconic amp built by Marshall in the 1960s. Based loosely on the tweed Fender 5F6-A Bassman, the JTM-45 was embraced by many guitarists and is part of Malcom Young's iconic AC/DC sound. The model was reissued in the 1990s although with 5881 (6L6) power tubes instead of the original's KT-66 tubes. Luckily, the reissue transformers can handle KT-66 power tubes and many players, including this one, swapped the stock 5881s for KT-66s. The difference in tone is noticeable and brings the amp's tone closer to vintage. The rig shown here is a typical half stack with a JTM-45 head paired with a 1960AX speaker cabinet loaded with four 12" Celestion G12M speakers.
 

2001 MARSHALL JTM-45 half stack


 Power Amp:  Tube; 2 x KT-66, 45 watts RMS @ 16 ohms

 Preamp:  Tube; 3 x 12AX7

 Rectifier:  Tube; 1 x GZ34

 Speakers:  4 x 12" Celestion G12M (ceramic)

 Channels:  2; 2 inputs per channel

 Effects:  None

 Controls:  Volume for each channel, presence, bass, middle, treble

 Head Dimensions:  10 1/2 H x 26 W x 8 D inches

 Speaker Cabinet Dimensions:  29 3/4 H x 30 W x 14 1/2 D inches

 Total Weight:  110 lb













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