1973 JMP combo
In 1965, in addition to the creation of the first 100 watt Marshall, there was also the debut of small 18 watt combos, built to compete with the small Vox, Fender, Selmer and Watkins Dominator. The 1958 (2x10"), 1973 (2x12"), 1974 (1x12") were similar in appearance to the Bluesbreaker, with the pinstripe grille cloth, and was equipped with a pair of EL84 output tubes, three ECC83 preamp tubes and an EZ81 rectifier tube, for just 18 watts. They featured two channels and four inputs, they had a tremolo tube on the first channel and, upon request, a spring reverb thanks to an ECC86 tube (it was the first Marshall to have reverb).
These amplifiers became famous among those guitarists who were looking for the "cranked up tone" at apartment volumes.
They were produced until '67, when they were replaced by the 20-watt JMP models, less expensive, but less "refined" sounding. However, commercially, the 20 watts amplifiers were more successful than the 18 watts. The new 20 watts Marshall always featured two EL84, one ECC83 tube less than its 18 watts cousin, had a solid state rectification and had no reverb.
In addition to the "classic" combos 1958 (lead), 1974 (lead & bass) and 1973 (lead & bass), now available both as a head and as a combo, also introduced were the 1917 (P.A.), with a head that also had a pair of outputs for speakers on the front panel, and the new heads 2019 (bass), 2061 (lead & bass) and 2022 (lead). It was the only one equipped with the optional solid-state tremolo variant (T2022). These heads were often associated with 4x10" cabinets. They all remained in production until '73.
These amplifiers became famous among those guitarists who were looking for the "cranked up tone" at apartment volumes.
They were produced until '67, when they were replaced by the 20-watt JMP models, less expensive, but less "refined" sounding. However, commercially, the 20 watts amplifiers were more successful than the 18 watts. The new 20 watts Marshall always featured two EL84, one ECC83 tube less than its 18 watts cousin, had a solid state rectification and had no reverb.
In addition to the "classic" combos 1958 (lead), 1974 (lead & bass) and 1973 (lead & bass), now available both as a head and as a combo, also introduced were the 1917 (P.A.), with a head that also had a pair of outputs for speakers on the front panel, and the new heads 2019 (bass), 2061 (lead & bass) and 2022 (lead). It was the only one equipped with the optional solid-state tremolo variant (T2022). These heads were often associated with 4x10" cabinets. They all remained in production until '73.
Antonio Calvosa
