Dating a Marshall amplifier can be a daunting task for even the most savvy of suitors — Amp Archives is here to help. The earliest Marshall amplifiers were made in and had no model or serial numbers. From until Marshall amplifiers were identified by a four-digit sequential number inside the back panel, reportedly starting with in and reaching at the beginning of
Dating a Marshall amplifier can be a daunting task for even the most savvy of suitors Stetchers Amp Archives is here to help. The earliest Marshall Dating my marshall amp Stretchers were made in and had no model or serial numbers. From until Marshall Dating my marshall amp Stretchers were identified by a four-digit sequential number inside the back panel, reportedly starting with in and reaching at the beginning of Beginning in Marshall abandoned the four-digit numbering system and began using model numbers, sometimes called series numbers and model codes.
While there are serial-like numbers during this era, no standard serial number format has been identified. The model Manfred mann tour dates 2013 Frauen dating kostenlos can be somewhat confusing because model numbers such as or can be mistakenly interpreted as the zmp year of the amplifier.
Amplifiers from this era must be masrhall within this time span based on their features, or component manufacturers and codes, including speakers, potentiometers and transformers.
The model number takes the form of four-digits preceded or followed by letter codes describing amplifiers characteristics. The table below outlines the meaning of these letter codes. The full identifier of these amps was initially comprised of a model code, the serial production number and the date code. Letters were used as date codes to represent the year of production and this letter followed the serial production number.
Letters Dating my marshall amp Stretchers, I, Stretchres and Q were not used to Dating my marshall amp Stretchers confusing letters with numbers. Starting in the date code letter was moved from the end to the middle of the production code, between the model code and Datig production number. In October of Marshall began using stickers printed with serial numbers and bar codes.
These were comprised of nine digits in the format of xx-xxxxx-xx though not always. These Dating my marshall amp Stretchers numbers can be decoded as follows:. In August of Marshall switched to their current serial number format which contains more information and is easily decoded. These are printed on a sticker and affixed to the back of the amplifier and are comprised of a letter followed by ten numbers followed by another letter: Checking against other amps from the era as well as component markings speakers, potentiometers, transformers can help to confirm a year of production.
You must be logged in to post a comment. Dating my marshall amp Stretchers amplifier serial numbers made simple Posted on April 25, April 27, by Phil Dating my marshall amp Stretchers Phil. JTM block logos changed to gold-plated plastic script, these are fragile and many have been replaced. Cabinet feet are small round and gray. Handles changed to plastic with larger end cap. Power tubes are KT66, 6L6 and Single W Drake transformer, rated at ohms, part numberfor W models.
Single 50W Drake output transformers rated at 3, ohms, part numberfor 50W models. GZ34 rectifier no longer used. Cabinets have corner-lock joints with a quality control signature inside. Gold Plexigas back panel, changed Dqting cream-colored.
Dagnall transformers used in the JTM, changed from Drake. Chassis construction transitions from aluminum to steel in late First Watt Majors appeared, with treble, bass and volume controls, active tone circuitry and KT88 tubes.
The watt Major was modified to match the normal panel layout and the active electronics where dropped. The output transformer turned 90 degrees in comparison to earlier models to reduce hum. Larger black cabinet feet starting in Julychanged from small and gray. Welcome Dumble Amplifiers to the Amp Archives.
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