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Dating a marshall amplifier

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The JTM 45 was first built in 1962, handmade in an all-aluminum chassis, by Ken Bran and Dudley Craven.

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Little did they know then that they were at the threshold of a rock 'n roll revolution... This two piece setup, the head and cabinet, were sold together as Model 2059.The speaker cabinets were closed 4x12" Celestion loaded cabinets. It isn't clear if these amps were actually part of the JCM800 series.The first combo's (models 1961 & 1962) appeared halfway this year. The schematics suggest they are, but you won't find JCM800 printed on the amps.Desperate to build a factory large enough to meet demand, Jim Marshall made a deal with the Rose Morris company. (Thanks to Christos) This amp was in production from 1976 up to 1980. It was fitted with two Celestion G12L T1632 8Ω speakers. Special high power version of the speaker cabinets were made for these beasts. This was the accompanying cabinet for the 2001 Bass amp.In exchange for the necessary funding (to build this new factory) Rose Morris acquired the exclusive worldwide rights to distribute Marshall amps for the next 15 years. See the Marshall Amps 2000 page for more "official" information on the 2000 amps.Pete has long been an embellisher of stories, and what actually transpired probably wasn’t exactly like that.

But there’s no doubt the Marshall stack would come to dominate the sound of rock and roll, beginning with that fateful day.

In the early 1960s Jim Marshall was a drum/percussion retailer in Hanwell, London. Fender amps were popular but expensive and Jim thought he could produce them at a better price. The main difference was he used four 12 inch Celestions in a closed back cabinet vs the Bassman’s four 10 inch Jensen speakers with an open back.

Initially using US amp parts he switched to UK components to save money.

And he found the man willing to supply it – Jim Marshall.

One day in 1965, Townshend went to Marshall’s music store in London, threw down his Marshall JTM 45, and said, “I want that, twice as loud.” And almost like Krups, the military manufacturer, Marshall’s eyes sort of lit up and he said, “I’ll supply this man with the weapon he requires.” And from that, Townshend says, came the Marshall stack and the big amplifiers of the ’60s.

Pete Townshend once told an interviewer that when The Who first formed, he saw the guitar very much as a weapon.