This article updates information from research started in and most recently published in The progress of this type of work is slow, hence the long hiatus, however, a lot of new data have been collected regarding Fender amplifiers, including production numbers. Advances have been made with regards to the production of tolex amps and it appears that much of this information can be applied to late s tweed amps as well. In addition, the dating-by-serial number tables have been revised and are more accurate. The bad news is that there is still a lot of work that needs to be done on the silverface amps. Unfortunately, there is some sad news to report as well.
Fender Date Codes
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Sometime in, Fender ordered a bunch of Twin Reverb/Dual Showman Reverb chasses from their supplier. The machine that stamped the serial number into the.
Blackface amps were immediately popular upon release and used on numerous famous recordings. They continue to be a backline and recording mainstay of musicians who seek a great, chimey Fender clean and, when pushed, a classic overdriven tone. Fender offered a full range of amps in their Blackface line, ranging from the diminutive Champ to the massive Twin Reverb. Cosmetically, the amps featured the aforementioned black control panels with white lettering, black tolex protective covering, and silver thread grill cloth.
Built like a proverbial tank, these plus-year-old amps will be rocking way into the future. Fender offered three versions of the Champ during the Blackface period. After all, he was the guy who reused his styrofoam cup for coffee. The new style Champ and Vibro Champ amps featured slanting control panels.
Jimi Hendrix’s Fender Twin Reverb
There are some easy ways to find out when your vintage Fender was manufactured. Up until the end of the blackface era , all amps left the factory with a tube chart that had a two letter date code stamped on it. Another way to get a close estimate of when your amp was made is to read the codes on the transformers.
Fender offered a full range of amps in their Blackface line, ranging from the diminutive Champ to the massive Twin Reverb. Cosmetically, the.
Possible culprits include the preamp tubes, the power tubes, the hum balance resistors, and the power supply caps. Thanks for your input. I have a Deluxe Reverb and am trying to figure out if it has a Utah or some other kind of speaker. Any speaker ideas on that front? I also have one of the newer Fender Pro Reverb amps with an effects loop and a silverface Twin Reverb with a volume control. Both amps produce very loud hum whether or not a guitar is plugged in.
Could this just be bad caps?
How old is my vintage amplifier?
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The Twin was introduced in , two years before Fender began selling Stratocaster electric guitars. The amps are known for their characteristically clean tone. The Twin has seen a number of revisions since its introduction, both internal and external, with its designs sometimes varying greatly from one year to the next. The Cyber Twin, which combined a tube amp with a digital processor, was introduced in January The Fender Twin has gone through a number of changes over the years, both cosmetically and electronically.
The original version was an all-tube combo amplifier with dual 12″ speakers and two 6L6 tubes for a rated output of 25 watts. The early models of the larger “narrow-panel” tweeds are also remarkable for their refined electronics whose circuit design incorporated dual 5U4 rectifiers in the Twin and Bassman models, another improvement given Fender’s quest for a louder, cleaner amplifier. The entire line of Fender amplifiers from to later for smaller models and Bassman was uniform in this look—tweed or “airline linen” covering with a maroon with gold stripe woven saran grill cloth.
By the end of the decade, a JBL 15″ speaker was available on special order for the Pro model. It was modified in for more volume, switching to four power tubes  with the more efficient long-tailed pair phase inverter for a power increase to 80W. This “hi-powered,” tweed-covered design continued into early , after the other Professional Series of Fender amplifiers had made the transition to the modern brownface design.
Warranty & Support
Your question may be answered by sellers, manufacturers, or customers who purchased this item, who are all part of the Amazon community. Please make sure that you are posting in the form of a question. Please enter a question. This amp has seen action in every imaginable venue and remains indispensable to this day. Be it rock, jazz, country or anything else, this is what a clean electric guitar sounds like – or add an upside-down Stratocaster guitar and a fuzz box
DATING FENDER AMPS BY REFERENCE OF SERIAL/CHASSIS NUMBERS Between the mid s and early s, the CTS inch Alnico was regularly used in Super Reverbs. Twin, , appeared in several variants until
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having a hard time dating my silverface twin
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the most timeless and beloved models like the Tweed Bassman and Deluxe, the Twin Reverb and Deluxe Reverb, originally came fitted with Jensen speakers.
Fender Tube amp codes: – look for a 2 letter code stamped on the tube chart inside the back of the amp – the first letter is the year, and the second letter is the month. An amp stamped NA would have been made in Jan. Here is a list of the first letter showing the year of manufacture. These codes have nothing to do with the serial number that is stamped on the right rear of the chassis – Those numbers are posted below.
These codes are for amps with the serial number beginning with a letter:. EIA numbers taken from the transformers may help you to determine the date of production on amps that fall between the different dating schemes. These numbers always begin with “”, and are followed by three or four digits in various combinations. If three digits are present, the first digit would refer to the year i. If four digits are present, the first two digits refer to the year i.
The last two digits would refer to the week of the year i. An example would be: EIA would mean the 21st week of All Fender amplifiers, manufactured after include a date code on the amplifier. This code is located on the “QA” Quality Assurance sticker, which may be found on the back of the amp chassis.