Dating ampeg amps by serial number, how to date ampeg amplifiers

Using the month and year codes below, and knowing what order they are in for different eras, you can easily decode a Celestion speaker's age. Not too many people know more about the Bassman than Clarke. The month codes below remained consistent from forward, but there have been several eras of year codes. There have been three coding schemes used by Celestion since Marshall's birth as a company, each using some combination of day, month and year.

Dating Ampeg Cabinets - Amps and Cabs - Basschat

Video Decoding Ampeg Speaker Cabinet Model Numbers

The code contained information regarding the manufacture and date of production. These were almost always at the extreme left of the chassis, when looking at the rear of the amp. Third tube is the bass channel driver. View attachment Really good actually. The letter B was skipped, as were the letters I, O and Q since they might be confused for numbers.

  1. Paul Linden has volunteered to fill in for Greg.
  2. Common Fender Source Codes.
  3. If you really want to know the differences, we recommend you consult past issues of Vacuum Tube Valley magazine.
  4. Princeton and Princeton Reverb.
  5. Marshall used letters as a date code to represent year of production.

The amps that received the stamped suffix must also be added to this sub-total. Fourth tube is the driver. The machine that stamped the serial number into the back of the chassis got stuck on number A and a lot of pieces were stamped with this number.

Dating Your Fender Amp

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Therefore, do not poke around in your old Ampeg if you are unfamiliar with amplifier electronics or their operation. Many earlier Fender tube amps used rectifier tubes. Paul worked with Greg on their small box brown Twin myth busting research and is extremely knowledgeable about Fender amps in general with a specialization in the brown and blonde amps. Interest in vintage Fender amps really took hold about years ago.

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How To Date A Marshall Amp

It would have been very costly to destroy these units so two remedies were implemented. If the heater shorts to a cathode in this tube, the amp will not work properly. And now for an important update! Andrew works in parallel with this research, but is specializing in the Rivera era blackface amps.

It's also one more piece of evidence to pair with the serial number to corroborate the actual year. Sure would like some help deciphering this serial number if I'm wrong. To find the serial number on your Marshall amp, cannabis dating uk start by looking at the back panel of your amp. This is the tremolo vibrato oscillator and driver. Third tube is the tremolo.

Ampeg amps dating

This is the driver stage and gain makeup stage. Sixth tube is the phase inverter and vibrato tube. But other changes may be meant to deceive. The second thing that was done was the addition of another number stamped into the chassis as a suffix to the A serial number, e. If it's a one-digit number you need to determine the correct decade of the amp some other way.

Ampeg SVT What year is this thing - Music Player Network

Fifth tube is the phase inverter. Remember, your amp is newer than the newest component. All Marshall amps originally came with Celestion speakers, so in cases where the speakers are original, austin jake speaker date codes can be used to date earlier amps.

Often these specimens produced between October and December had an offset chassis. During this four year stretch, single mother dating again Celestion speaker codes followed a day-month-year format. Click here for information on ordering this book directly from the authors.

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Dating Ampeg Amps By Serial Number

We understand that some technicians recommend Ei or Preferred Series for this duty. If the speakers in your Marshall cabinet or combo are original, besten die they can provide another piece of evidence when determining the date of manufacture. This will give you an approximate idea of the era during which your amp was manufactured.

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The year codes changed after this, so using other pieces of evidence to make sure you have pre speakers is important. Check the era below that applies to your speaker. Second tube is vibrato channel preamp, is specified.

Production has continued there uninterrupted through today, though some lower-priced models are now made in China, India or Korea, depending on the series. Jensen Replacement Speakers. Fourth tube is the driver and reverb recovery amplifier.

Dating A Crate Vintage Club Amplifier

Currently, Celestion speaker codes follow a day-month-year format. The guide below will help you quickly and clearly date Marshall amps and cabinets, without us waxing poetic about their influence. Second tube is the driver and tremolo modulator. These current serial numbers are arranged in a letter-ten digits-letter format A-xxxx-xx-xxxx-A.

  • These have not been observed or reported so the answer remains unknown.
  • The year codes started over, with beginning at B, oddly enough.
  • It's hard to believe because it doesn't look more than a year or two old at most.
Marshall Serial Numbers

The bad news is that there is still a lot of work that needs to be done on the silverface amps. Use the model codes and date codes below to determine the model and age of your amp. You might damage the amplifier and the tubes.

Anyone know their stuff on Ampeg Serial Numbers - Amps and Cabs - Basschat

Enough information serial numbers, model, date codes has been gathered to prepare the following guide for dating by serial number. While Fender and Vox amps have their place in moving electrified guitar forward, the creations of Jim Marshall fostered an entirely new sound and allowed guitarists to fill stadiums with it. Note that the year associated with a range of serial numbers is very rough and will likely change as more information is gathered for refining the estimates.

The serial number is one part of the puzzle when dating an amp, but cross-checking the originality of the different parts, including tubes, wiring, transformers, knobs, etc. As a result, dating cabs can be more art than science. The following charts are the revised dating tables for Fender tube amps. Ampeg may very well have used or as the starting point during slow production periods. Until such time that enough information is available to date s Ampegs by serial number, the features of the amps from this period can be used and compared to the following table.

But changes took place in as well. Not enough information was available to the authors to determine year of manufacture by serial number. These are still found on stickers with a bar code on the back of the amp. In all cases, if you are not certain which amplifier version you have, do not experiment!

How to Date Ampeg Amplifiers

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