Fender twin reverb dating
One of the most common topics that falls into this category is early silverface amps. Specifically, the reverb drive tube's cathode bias resistor was a 1K, 1-watt, instead of the normal 2. The tail resistor in the phase inverter was 6. In the case of early tweed amps, there simply isn't enough info available at this time to accurately date these by serial number, though some rough guidance is provided. Examples of Source-Date Codes. Large overlaps in years may be due to lack of sufficient data late s to mid s or simply that the stamped chassis were used way out sequence mid s to early s. Some, but not all, export models don't fit exactly into the sequence given and are usually from a year or two later than the serial number would otherwise indicate. Please note this is very important that there are many exceptions to the "rules" I have outlined here. I'll leave you with a bit of juicy info, namely, some preliminary production estimates for several random amp models.
Okay, I know you're all just dying to skip ahead to the serial number tables but try to contain your excitement and read through the article first. They actually held clipboards and stopwatches to measure how long it took for me to attach various parts. Greg and I also disagree about determining production from serial numbers. This circuit is unique and transitional - part 6G4 in places, part 6G4-A in places, part "unique experimentation" in places. Probably the same as the pots and transformers that we just dug out of the boxes. Also it's worth mentioning: At least that's the reason according to the '69 catalog. Working at FMI - I was able to interview a fellow who wishes to remain anonymous who worked at Fender in in the amp department. Jensen speaker, 1st week of With this in mind, remember if the last two digits of the source-date code are greater than 52, you're not looking at the source-date code! Usually this isn't too difficult. Note the removal of the voltage selector switch and hard-wiring. Another interesting tidbit is that a lot of Fenders were imported into Australia in the late s and early s that were stock volt domestic US units. For speakers this code can be 5, 6, 7 or 8 digits long, and it's ink-stamped or paint-stamped on the "bell housing" of the speaker. How to date Fender amps by serial number!! DATING The tables are pretty much self-explanatory, but here are some guidelines to keep in mind when using the tables to date your amp. The model was supposedly discontinued in Particle board some call it MDF - medium density fiberboard baffles debuted in and were used through the early s. I have to wonder how often Fender used the SPEC check box and what features a "special" amp or cabinet would have?! Just as with Fender guitars, you'll find serial numbers that should fall in a certain year, but don't. Because the serial numbers are for a particular model and that chassis were stamped sequentially, is reasonable to assume that the serial number infers the Nth unit manufactured. Don't get all bent out of shape if you see a model that wasn't "supposed" to be made in a certain year. On 3 digit date codes, you have to "guess" the decade of the pot or speaker. But it wasn't always 'cool guitar' amps, sometimes I was making Fender Rhodes Satellite amps on bent aluminum, sometimes only Champs. Well, this universal "truth" was debunked when we found a bunch of amps with transformers made by the Better Coil and Transformers company. Like I said, there were 5 or 6 of us at the benches every day. Please note this is very important that there are many exceptions to the "rules" I have outlined here.
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