This trait also makes the AB763 circuit very pedalįriendly-it can play loud and clean to let the pedals do their thing. Ubiquitous voice are its mid scoop tone and loud and clear, but not too sterile character, especially when compared Some of the elements that give the AB763 Deluxe Reverb such a Output Transformer are attached to the bottom of the chassis. The AB763 Deluxe Reverb ChassisĬontrols in front, Circuit Board inside, tubes on bottom and out of view. Page dedicated to the magical 5F6-A tweed BassmanĪmp and the ever popular 5E3 Deluxe. Tube theory and other introductory material here so check it out if you have Tubes work in the very simple Fender 5F1 Champ. I recommend you take a look at my How Tube Amps Work and How Vacuum Tubes Work webpages for a detailed The "blackface" nickname comes from the control panel Of how the amp circuit works, what each component does, and how changing those I will try my best to give a not-too-technical explanation Vibroverb, Tremolux and no-reverb Deluxe. The "763" in the model name comes from the circuit change dateĭeluxe Reverb, Twin Reverb, Super Reverb, Bandmaster, Showman, Pro, Vibrolux, 'AB763' was Fender's internal model designation for the 1963Ĭircuit. Have comments or corrections? Email rob at: robinette at The production date code for the amplifier.DRRI & 68 CDR Mods ] ] How the Fender AB763 Blackface Deluxe Reverb Amp Works The non-electronic tech's guide to understanding the classic AB763 The last line will have 2 letters of theĪlphabet either printed or written by hand. "sign-offs" at the completion of sound and electrical tests, Is a Black and Silver label, which contains several lines for Which may be found on the back of the amp chassis. This code is located on the "QA" (Quality Assurance) sticker, Manufactured after 1989 include a date code on the amplifier. An example would be: EIAĦ06-4-21 would mean the 21st week of 1964. The last twoĭigits would refer to the week of the year i.e. If four digits are present, the first two digits Present, the first digit would refer to the year i.e. Numbers always begin with "606", and are followed by three orįour digits in various combinations. Transformers may help you to determine the date of production onĪmps that fall between the different dating schemes. These codes are for amps with the serial number beginning with a Therefore, if you have a push-pull pot, your amp is 1974 or newer.Īmps do not have a date code stamped on the tube location chart. A push-pull pot was added to some amps in 1974.In 1973, Fender removed the "Tail" from the logo.Making them a little less desirable than the blackface amps.Ī good amp tech can make these sound great. Silverface Amps began in 1968, when Fender made circuit changes to most amps, Silverface amps with aluminum trim surrounding the grill cloth are 1968 models.Fender Blackface amps & early Silverface amps used cloth covered wire." Pre-CBS" Blackface Original Amp Knobs have the set screw at the number "10".Early Fender Electric Blackface amps from 1964 and some into early 1965ĭid not have a Fender Logo on the grillcloth." Pre-CBS" Blackface Amps are labeled "Fender Electric Instruments".Īfter CBS bought Fender in 1965, amps were labeled "Fender Musical Instruments".Serial number that is stamped on the right rear of the chassis Here is a list of the first letter showing the year of An amp stamped NA would have been made in Jan. This information is not for commercial use,Īnd cannot be copied, posted, pasted or otherwise used in anyĪmp)- the first letter is the year, and the second letter is the Dating, Speaker code & Tube Information Superior Music - Fender Amp, Amplifier Serial Numbers
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