These are generally referred to as F series due the large Fender branded F on the neckplates of the era. During the years the Alnico magnets get weaker too. Some serial numbers were used more than once, on different amp types - example; A01600 could be a Bandmaster, a Bassman, a Champ, a Concert, or a Deluxe info from Greg again. Solid-state rectifiers do not wear out as tubes do, nor can they be replaced by the user. Sixth tube is the phase inverter. Finally we point out location of components in the physical layout diagram. For now, the dating schemes for these series are: A6 + 5-digits — 1976-77 A7 + 5-digits — 1977-78 A8 + 5-digits — 1978-79 A9 + 5-digits — 1979-80 B + 5-digits — 1975, 1976 F9 + 5-digits — 1979-80 F0 + 5-digits — 1980-81 F1 + 5-digits — 1981-82 F2 + 5-digits — 1982-83 F3 + 5-digits — 1983-84 F4 + 5-digits — 1984 Finally, these tables are only a guide.
Reissue amps also use stamped Date Codes. Bassman 6G6 First tube is bass channel preamp, 7025 is specified. Both terms mean the same thing--an oscillator makes a low-speed signal that varies the gain of the guitar signal. It might not sound like much, but quite a lot can be deduced from such a sample. Pro-Amp 6G5, 6G5A; Vibrasonic 5G13 First tube is first channel preamp, 7025 is specified. These are invaluable reference tools if you are digging around inside of your vintage Fender amplifier.
By enabling and rewiring the speakers you can quickly switch your tone depending on what the specific gig requires. This tube need not be low -noise or low-hum, nor does it need to be tested for microphony. This can be a tall order for someone less versed in guitar history, but we do have some resources here on Reverb to help you out. Greg was passionate about Fender amps and his knowledge, insight and humor will be missed very much. This batch's run of serial numbers starts in mid-1984, when production was fairly normal. The amp will play louder than before given the same volume knob setting. The best estimate is that about 100 of these were made before the circuit was revised.
As mentioned above, many reissue models use serial numbers that don't really correlate to their age. I estimate the 2 amp types total 9,500. Logical schematics: Layout: Click images for full size versions. Bassman 6G6A, 6G6B These models are identical to the Bassman 6G6, except they models use solid-state rectifiers rather than tube rectifiers. Estimated total production is 12,500.
This code can be found on the power transformer, output transformer, choke, and reverb transformer. Also, things got a little crazy during Fender's last few months in the Fullerton factory, and when the management buyout was complete March 1985 they had some parts but no factory. The Super Reverb can be really loud and even interfer with the bass guitar. If you've got one of the 14 amp models in this range you can get a rough idea of its date-of-manufacture from these tables. Fender Japan serial numbers can usually be found on the back of the neck near the neck joint.
Second tube is vibrato channel preamp, 7025 is specified. The First letter equates to the Year and the Second letter to the Month. The ground switch is easy available if you disable the power supply wires and death cap. Features like bolt-on necks and pickups wired into the pickguard all helped the Fender factory churn out guitar after guitar, day after day. Most reissue Fender amps also use this same code. If it's stock, it will want to see a 2 ohm speaker load, which is somewhat limiting. It is very practical to carry with you those small Sovtek plastic adapters that quickly and easily replaces the rectifier tube.
Third tube is the driver and reverb recovery amplifier. The revisions were made based on data collected since the tables were initially published. If your amp's serial number falls into the second-to last batch then your best hope of dating it is if you've still got the original speaker. How I'm doing it I run a couple of websites making the easily accessible. Amps from the blackface era, which have a black faceplate, were manufactured from 1963 to 1967. 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.
Solid -state rectifiers do not wear out as tubes do, nor can they be replaced by the user. You need one of the following; 1. Fender Tube amp codes: 1953-1970 - 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. After a short period of overlap with the old system, the post-76 numbers will start with a letter that indicates the decade, followed by a number that indicates the year of that decade. Advertisers and politicians make decisions based on smaller percentages! Thanks to everyone who sent information about their amp s. So i have a 1967 May ish made one. Amps from the silverface era, which have a silver faceplate, were manufactured from 1968 to 1982.
Just two speakers are enabled 4 ohms with a 65 Super Reverb having tremolo disconnect mod and V1 tube pulled out. I have a Fender Super Reverb silver face amp that I will be selling. In the above example, the transformer was made in either 1966 or 1976, week 45. Leaking high frequencies to ground, less distortion and cleaner tone. Again, nothing does what the Super Reverb does. We would describe the effect as making the tone richer, fuller and more powerful with stronger mids that pushes the power amp section harder phase inverter + power tubes.