Dating marshall jcm 800

dating marshall jcm 800

How do you date a Marshall amp?

The best way to date a Marshall amp is to first tell it you dont like Fender amps! Dating Celestion speakers does not need to be this complicated. Just go by the location of the date stamp rather than the stamp format, and then decipher the pair of letters within the date code.

Why are Jim Marshall amps still so popular?

While Fender and Vox amps have their place in moving electrified guitar forward, the creations of Jim Marshall fostered an entirely new sound and allowed guitarists to fill stadiums with it. Marshall amps had such precedent-setting wattage and tone that their history can hardly be separated from the history of rock itself.

When was the 8481 Marshall 50 watt amp made?

For example, the number S/A 8481 E tells us that this is 50W amp (S/A) made in 1973 (E), production number 8481. From January 1984 to September 1992, the three-part coding was used by Marshall but the date code letter was moved from the end to the middle.

How many volts is a Marshall JMP 50?

It has the code B at the end for 120/60 Volts (US). I have a 1969/70 Marshall JMP 50 (1987) Crossover with no back cover. Those 50w are super loud. Can not play in a pub. I would like to sell but do not know how much to ask.

Where do I find the serial number on a Marshall amp?

We do not have serial number information on Marshall Amps before 1969. The serial number is usually located on the back panel of the chassis but some amplifiers made between 1979-1980 had them on the front panel. From July 1969 to December 1983, the date letter was put after the serial number.

How can I tell if my Marshall amp is pre-1969?

Keep in mind that no reliable serial number information exists for pre-1969 Marshall amps, so if your amp doesnt have a number matching one of the formats below, it is likely pre-1969 and identifiable by features rather than serial number. Click on the links here to jump directly to the serial number style that matches your instrument:

When did Marshall amps start using speaker date codes?

All Marshall amps originally came with Celestion speakers, so in cases where the speakers are original, speaker date codes can be used to date earlier amps. Marshall cabinets didnt officially include serial numbers until October 1992.

How old is my Marshall amp with a barcode?

Marshall amps with a Barcode 1993-1996: The first two numbers are the year, and the last two numbers are the month. Marshall amps with a Barcode 1997-Present: In 1997 Marshall changed to the latest dating system which is the easiest to decipher of them all.

What kind of power does a Marshall JTM45 use?

The first Marshall, the JTM45, used a push-pull power stage identical to the Fender Bassman 5F6-A. Subsequent Marshall designs used EL34 pentodes instead of Fenders 6L6 beam power tetrodes to create an entirely new sound for which these amps have become legendary.

Is the jmp50 a direct descendent of the JTM45?

This is mainly because, despite being a very different-looking amp, the JMP50’s circuit is still a direct descendent of the circuit found in the 5F6A tweed Fender Bassman of 1958-’60, upon which Jim Marshall based his original amp, the JTM45.

What is the difference between the Fender Bassman 5F6-A and Marshall jmp50 model 1987?

The Fender Bassman 5F6-A and the Marshall JMP50 Model 1987, while sharing the same push-pull circuit heritage, offer completely different sonic characterisitcs. 1 Richard Kuehnel, Guitar Amplifier Electronics: Basic Theory, (Seattle: Amp Books, 2018)i, pp. 70-72.

What is the screen resistor on the jmp50 model 1987?

The JMP50 Model 1987 also eliminates the 470Ω screen resistor found in the 5F6-A and JTM45. While primarily intended to protect the tube, the screen resistor value also has a significant effect on harmonic distortion at high power levels.

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