Ask Amp Man: Identifying Vintage Fender Speakers — and Battling Hum

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The Date of your Wurlitzer Electric Piano

I pulled this information from Google’s cache of the site. If anyone feels this page should be taken down, please feel free to contact me. Ampegs can be divided into six distinct groups for dating purposes: pre, to mid, early to , to , to , and post

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The Code on the tube chart of your Fender Amp is made up of two letters. The First letter equates to the Year and the Second letter to the Month. Reissue amps also use stamped Date Codes. Examples of “Hand Stamped” Date Codes. The source-date code on a pot is a 6 or 7 digit code impressed into the casing of the potentiometer. 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.

In either case, the code works the same. The first 3 digits on a pot, or the first 2, 3 or 4 digits on a speaker are the source or manufacturer code. The remaining 3 or 4 digits are the date code. In 3 digit dates code, the 1st digit is the last digit of the year. On 4 digits date codes, the 1st and 2nd digits are the last two digits of the year.

Dating DeArmond Products and Components

However we’ve seen early year SVT’s without any hand numbering. Both versions have been seen throughout In Ampeg manufactured three different types of removable back panels for the SVT. The serial number was stamped into the right side of the back panel. This version was chrome, still with white silkscreening and serial number stamped into the right side.

There is an easy way to determine the date of your vintage Jensen speaker. On the edge of the speaker where the mounting holes are there will be a six digit.

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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.

Try out the free easy to use pot and speaker date finder. Pots and Speaker EIA code database. Electronics Industries Alliance (EIA) codes.

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.

How to Date a Gibson Amplifier

There has always been a considerable interest in the serial codes, options and the history of the true original Heritage series Klipschorn, LaScala, Belle, Cornwall and Heresy. The original “Codex” was published on the Forum several years ago, but times have changed, and with the Klipsch transition to the new forum, it appears that the document is either “lost”, or deleted, etc. To that end, and as a reference source again Note: Things have changed, new versions are brought to the consumer, and the aftermarket legitimate Attached also is a.

The data is generally correct; the author assumes full responsibility for errors.

While dating Fender amps made before by serial number is all but impossible (as records of. blue labeled “Fender” CTS speakers (serial number XXYY).

Order by:. Available to:. These are from my Bassman Ten. I replaced them with Jensen Mod10s and have come to regret it. But I’ve now handed the amp to my kid and the speakers deserve a loving home. Full disclosure: Two speakers are great. Esp for being nearly forty years old. I mean, they sound fantastic.

Dating Cts Speakers

He makes house calls. Model Serial Please note that this number is NOT a date stamp. Every instrument has a distinct number. They are not completely chronological, but ranges of numbers are allotted to runs of instruments in a model or series. There is more information about this elsewhere on the site.

These eras and their approximate and relative date ranges are as follows: And because Eminences can sometimes be confused with CTS speakers (which.

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? Or is there some other possible cause you can point me to? Most factory speakers in Fender amplifiers have what is known as an EIA code that specifies their manufacturer. The format may look like this:.

Dating Fender amps and speakers

Wayne, Indiana. That amp worked pretty well with my Rick string. That amp turned out to be an early-production Pro-Amp. I started to investigate the world of pre-CBS Fender amplifiers. During that era Fender blackface amps, covered in black tolex with silver grilles, were everywhere.

The Fender Twin and Twin Reverb are guitar amplifiers made by Fender Musical Instruments The original version was an all-tube combo amplifier with dual 12″ speakers and two 6L6 tubes for a rated output of 25 watts. Instruments” (FEI) or “Fender Musical Instruments”, (FMI) depending on the date of manufacture.

A: This is a tough one, and short of various inspection stickers, and reliable transformer codes and pot codes, there is currently no definitively reliable way to determine an accurate date based on serial numbers alone, with the possible exceptions of the DMI-era products and beyond. The serial numbers during this era appeared as or , as just two examples. Here’s an example of a speaker cab’s ID plate.

The two-digit prefix in these serial numbers seems to indicate the year made, and in the latter example, which was seen on a DMI-Sound City F bass cabinet, it appears the model number might have been included in the serial number as well. For the earlier Dallas Arbiter-era Sound City products, however, the best you can legitimately determine is a range of years during which an amp or cabinet was made based on the eras in which these products appeared. See also “Q3” below.

How to Remove Install Front Door Panel 2005-07 Cadillac CTS