Marshall cab dating
With more power tubes, the amp had more headroom, a tighter bass response and more definition.It was the first Marshall with a solid state rectifier.This is the reason why Marshalls of this early era (up to 1968) are known as “Plexis”.The sound of this amplifier is “creamy” and “warm”. This amp is more suited for blues players, with a smoother sound.The JTM-45/ 100 (JTM-100) The JTM-45/100 with the “block” logo Pete Townshend and John Entwistle of The Who needed amps that could overpower the noisy and energetic crowds.Marshall then “hot-rodded” the JTM-45 using four KT66 and two 50w output transformers to handle the extra wattage. The result was the JTM-45/100 (JTM-100, for short).Before starting, I must warn you that acquiring vintage gear can be really risky.
However, he soon discovers that he's in over his head, and nobody can be trusted.How to read the serial number (1984-1992) In 1984, the order of the serial number components changed to (a)(c)(b), but the method used to determine the values for (a) and (c) remain the same.This system was used until 1992, when a bar code system was introduced.(a) Model - The first part of the serial number grouping determines the model of the chassis. (b) Serial number - The second part of the alphanumeric grouping is the five-digit serial number itself.(c) Manufacture date - The last character determines the date of manufacture.