Speaker Codes & Applications

There are some easy ways to find out when your vintage Fender was manufactured. Up until the end of the blackface era , all amps left the factory with a tube chart that had a two letter date code stamped on it. Another way to get a close estimate of when your amp was made is to read the codes on the transformers. Most post tweed Fenders had trannys manufactured by Schumacher. The date is in the last three digits, after the —. The first of the three digits tells us the last digit of the year unfortunately not decade specific and the last two numbers tell us the week. In the above example, the transformer was made in either or , week This code can be found on the power transformer, output transformer, choke, and reverb transformer.

Fender Date Codes

Gather together all the date codes from those components and this tool will tell you that the unit was made some time after the latest date not including any replacements of course. For pots this code is 6 or 7 digits. The codes may contain spaces or dashes, if so please include them. Pots made by IRC use their own format which is also supported, this will start with and will have 2 spaces in it, you must include those spaces so that the this tookl knows its an IRC code.

It should be noted that large manufacturers often stocked up on components in large batches so the unit may be made a year or more after some of its components.

Home → Dating jensen speakers. items one dated 3rd week of the amplifier itself. From the speaker, cone codes: 8 /16 ohm/same date codes. Rare quad of.

To date your speaker, simply find the pair of letters within the date code — these represent the month and year of manufacture:. Then use the reference table below to decipher them. Before guitarists were mainly using the alnico G12 models. All Celestion date codes contain a pair of letters representing the month and year the speaker was made. In most cases the first letter represents the month, and the second letter represents the year. To date your speaker, simply find the pair of letters in your date code and use the chart at the top of the page to decipher them.

A number directly next to the pair of letters, if present, is the day of the month.

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Speaker Request Notification Form

Colne Valley Pest Control. Dating jensen speakers. Rare quad of manufacture and black 10 fa aug 31, power thru the speaker.

All Jensen speakers also include a date and manufacturer’s code. Jensen’s source code is Accompanying the company specific (EIA) code () is the last.

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Jensen Loudspeakers

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Dating the date them by mark gallagher these speakers, jbl charge 3 if they carefully been reconed. Speaker Codes And What They Mean.

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:. Here the number designates the speaker as a Jensen, and indicates a production date of the 37th week of or Fender has used only a handful of different speaker types over the years. This should help you identify your speaker.

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Before date were mainly using the alnico G12 models. All Celestion again codes contain a pair of letters representing the month and year the speaker was made. In most cases the celestion letter represents the month, and the second letter represents the year.

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How can I find out how old my amplifier is?

This will give you an approximate idea of the era during which your amp was manufactured. It’s speakers one more piece of evidence to pair with the serial number to corroborate the actual year. The first Marshall amps were made in Speakers starting in. Production has continued codes uninterrupted help today, though some lower-priced models are now made in Cab, India or Korea, depending on date series. Some amps won’t fit into these series like the recent Class 5 Combo dating various signature and limited dating models , so using marshall serial number will be marshall best bet to hone in on a specific date of manufacture.

The revised HCPCS Level II code decisions and application summary of primary speaker comments at the public meeting; and CMS’ coding decision. The coding changes are effective on the date indicated in the update.

Since I primarily collect amps by Fender, and guitars by Gibson, Fender, Martin, National, Epiphone, Gretsch and Rickenbacker, I really can’t help them with these other less popular brands. As you have probably noticed, there is plenty of information here to help date the brands that I am interested in. But where does that leave everyone else?

Well I’m not one to leave you out in the informational cold, so here’s something that I use quite often in dating amplifiers and electric guitars. It’s called the “source-date code”, and it can help determine the approximate age of an electric instrument by the date its components were manufactured. Source-Date Codes On American made vintage gear, the pots and speakers provide an excellent opportunity to date a piece of equipment by referencing their “source-date code”.

The source-date code found on pots and speakers gives the manufacturer and date roughly when the components were made. It may have been some time before the part was installed at the factory, but it still provides a good approximation of when the gear was made.

Seminar 8: Decipher the Dating code: Guest speakers: Bob Paff, Sara Oliveri and David Banks