For instance, the serial numbers for tweed Bandmaster 3x10 run from S00001 to S03700. The last two digits would refer to the week of the year i. Power tube middle socket is 6V6. With all this information in mind, can you identify the following manufacturer and date of these source-date codes? I just discovered that the silverface Bandmaster speaker cabinet the big, tall one without tilt-back legs is ported see photo. If four digits are present, the first two digits refer to the year i. Certainly the hundreds of people who have helped me seemed keen to know.
Vibrolux models 6G9A, 6G9B, 6G11, 6G11A; Tremolux 6G9A First tube is first channel preamp, 7025 is specified. Inexpensive Russian 5U4Gs are readily available and suitable. They bought in speakers, and probably cabs on a last-minute basis due to cost and space considerations. Greg and I also disagree about determining production from serial numbers. This code can be found on the power transformer, output transformer, choke, and reverb transformer. If you can't, read the above information again! When I take my Princeton Reverb on a date we usually have a couple of beers and then I make it squeal and howl a little before breakup.
One thing we know for sure is that production codes can help date an amp to a particular month within a given model run. Because this tube amplifies the signal from a reverb spring which is inherently microphonic , a really quiet tube is not really needed. The sound clean and clear with a light overdrive as you push the amp. Can she play bass without playing too much or maybe blow harp and sing? To contact the forum owner hit the Contact Us link. If three digits are present, the first digit would refer to the year i.
One thing to note is that these amps used a variety of Utah and Jensen speakers which really affect the sound. For this reason it often necessary to replace Silverface baffles. Estimated total production is 12,500. Adding bias pot is really helpful to getting the best sounds from the amp. Then I became aware of the amazing work Greg Gagliano had been doing since the 1990s - the summary of his latest results - and that his research didn't take in the Rivera-era, or anything later. The type of face, grille cloth, type and number of speakers, type and number of knobs, etc. They came in two varieties: Reverb and Non-reverb.
The 5G12 Concert is the earliest version from very late 1959 and early 1960 so the existence of a tweed example, while extremely rare, is certainly plausible since Fender was making lots of tweed amps during the same time period. Plus it will sound better when cranked up. Fender had tremolo or vibrato on some amps. This tube does not need to be low in noise, however it should have good quality cathodes in order to handle the load. They are not included in these figures and I am not tracking them. The old and yellowing tube layout sticker on the inside right doesn't have a date stamp on it, although it probably did at one time and it's just faded away.
The salesman gave me the wrong number letters. This tube need not be low-noise or low-hum, nor does it need to be tested for microphony. Again, the amp sounds great to me no matter what it is so it doesn't matter a ton. Solid-state rectifiers do not wear out as tubes do, nor can they be replaced by the user. The First letter equates to the Year and the Second letter to the Month. The speaker codes are in the form 109xxxx or 67-xxxx; the transformer codes are 606-xxx.
Large overlaps in years may be due to lack of sufficient data late 1940s to mid 1960s or simply that the stamped chassis were used way out sequence mid 1960s to early 1970s. It sure doesn't look 22 years old. This tube need not be low-noise or low-hum, nor does it need to be tested for microphony. Yeah, it has red knobs, wich I thought was really cool. However for this range of amps at least, I reckon it's not just a policy of withholding company-confidential information. These letters are the production date code for the amplifier.
This tube need not be low-noise or low-hum, nor does it need to be tested for microphony. Remember, this model shares a chassis with the narrow panel tweed Pro and Super. And I bought it for it's functionality, not it's 'collectors value'. Fender never replied, and the magazine showed polite disinterest. However Fender couldn't maintain that system for long, and there are no F5 or F6 amps. I've had it since the early 80's and I'm trying to find out exactly what year it was manufactured. We understand that some technicians recommend Ei or Preferred Series 7025 for this duty.
Blackface and Silverface Princeton Reverb 1964-1981 The Princeton Reverb is prized studio, practice and small stage amp. The model was supposedly discontinued in 1966. Fourth tube is the driver and vibrato modulator. In 3 digit dates code, the 1st digit is the last digit of the year. Well, the serial numbers for the brown Vibroverb run from 00100 to 00600 indicating a total production of around 500 units, and the serial numbers for the blackface Vibroverb run from A00100 to A05300 indicating a total production of around 5,200 units. Fourth tube is the phase inverter. This tube need not be low-noise or low-hum, nor does it need to be tested for microphony.