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.
Jensen date codes
Jensen Loudspeakers is a company that manufactures speakers in many different models and sizes. Originally located in Chicago , Illinois , the company built a reputation during the 50s and 60s providing speakers used mainly in guitar and bass amplifiers. The company gained popularity in its early years, rising to its peak in the mid s when Jensen speakers were selected to be used in the first production of a guitar amplifier by Fender Musical Instruments Corporation.
Subsequently, Jensen speakers in the 40s, 50s, and 60s became commonly featured in major amplifier production, including amplifiers produced by Fender, Ampeg , and Gibson.
Another example: a speaker code of , in a Tweed era Fender amp (‘s – early ‘s), would be Jensen (), manufactured in (8) in the 20th.
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Dating DeArmond Products and Components
Gibson amplifiers have become known amongst guitarists for their warm, consistent sound and reliability. While you may be willing to pay a high price for a vintage Gibson amp, you should always verify the date of the amp to avoid being ripped off. By verifying the date of manufacture of the Gibson amp you want to buy, you will be able to breath easy that you are getting an authentic amp for the right price. Find the source code stamp, which is a series of six or seven numbers, that will be stamped on the speaker.
The stamp can be found on any part of the speaker, but it will be readily visible no matter the location.
I understand the date code ( – Jensen; – , 24th week, etc. The Jensen P12Q, Vintage AlNiCo 12″ speaker, to give voice to this fantastic work or art!
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.
How to Date a Gibson Amplifier
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‘Antique store near my house had a pair of speakers, something akin to but one of the pair was a Jensen P12R (silver frame, seemed original to the I forgot to check the date code) and the other was an old RadioShack.
This page contains details about the Magnatone Custom Series amps. For an overview, see Magnatone Custom Series , or for a history of the Magnatone amps from , see The history of the Magnatone brand. Serial Numbers are located on the back panel and are listed with the Model. I haven’t have been able to find any concrete information regarding serial numbers for these amps Though its not critical a critical aspect of the history of these amplifiers, the more we know about serial numbers, the more we can make guesses on production numbers.
Early Custom’s were build without the interlock switches, although the interlock was on the schematic inside the amp. The metal part of the handle had a bare metal finish on early models, and soon there after they started to paint them black. Also, the badge plates were different on the very early Customs, eventually they were produced with the large “M” below right.
It is possible that the first models had yet a different plate than the style of the early M7 plate below. This rather cheesey acrylic badge was used on some Customs. The Why? Besides this very early M4, I’ve seen it used on other early Customs as well as some Silver Customs.
Ask Amp Man: Identifying Vintage Fender Speakers — and Battling Hum
I didn’t have my phone on me, so no photos, but one of the pair was a Jensen P12R silver frame, seemed original to the cabinet, I forgot to check the date code and the other was an old RadioShack “Realistic” 70s era by the look of it, probably replaced a blown Jensen. The shop keeper assured me that they worked, and anyways I could return them if they didn’t. I’m thinking it could be a cool pair of extension cabs to have around, or maybe something I could stick a 5E3 chassis into.
Would you do it? I tend to be wary of purchasing vintage music equipment from “antique” stores rather than music shops. Their items tend to be less well-maintained and often overvalued mostly due to unfamiliarity with the music gear scene , though they’ve been more willing to haggle than guitar shops, in my experience.
Steel serial # , Amp serial # C, amp and speaker production code JA (January, Pots date between and , Jensen P15N dated mid
I tested each and every one of the speakers listed here to be working, but I do not warrant that they will work as a direct replacement for what you intend to use them for. Most of these are high efficient speakers, which means that little power is needed to bring out considerable volume and quite a bit of detail. The desirable of vintage guitar speakers is also non linearites in fruequency response and resonance frequencies as favoured by many guitar players.
So: To be used with vintage amplifiers in the 10 to 30 W range. The below listed power capacity is an estimate based on hooking them up. To use these speakers with higher powered amplifiers, such as solid state amplifiers if not several speakers are used to distribute power among them , is likely to destroy them. This is the higher powered version of the Alnico magnet speakers rated at 50W heavy magnet. Date of manufacture: 21 st week of by the US Chicago plant. The dust cover was eaten by mice form the cewnter and is open.
The cone of this speaker otherwise is in very good condition. The paint on the basket is perfect but peals off at one spot at the rim visible in the photo. Restrictions apply – so: I may cancel this purchase and refund. These are the original type of speaker for a Fender Bass Man. This is the higher powered version of the Alnico magnet speakers rated at 40W heavy magnet compared to the P10R 25W.
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”.
Till about , Jensen was the only Fender speaker supplier. Then from and later you see Fender using speakers from all the above.
Many tens of thousands of products were manufactured by the various DeArmond companies over more than four decades. In order to verify the date of manufacture for guarantee purposes, some products had their production date month, day and year rubber-stamped or handwritten internally during manufacture. The rubber-stamped items included FH pickups and effects pedals. Some FH pickups had the last two digits of the year of manufacture stamped on the small metal tab normally covered by a black plastic sleeve.
The Company name was also stamped on the underside of some products and while not as accurate as a precise date, this at least establishes a period. See Company History page for more information on Company name evolution. A Jensen speaker ref. SP, with rubber-stamped EIA Code for manufacturer — Jensen , 00 for year of manufacture — and 26 for the week of manufacture.
Jensen P12R 12″ 8ohm Guitar Speaker date code 1959 from vintage ’59 Fender Deluxe Amp 5e3
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There is an easy way to determine the.
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Forget about the Tweed Deluxe and the beloved Bassman, this’58 Fender Super is in a league of it’s own. Do not miss out on this opportunity to buy one of the finest narrow panel 5F4 specimens ever to be made available online. And get a great deal on this high caliber collector’s piece! All of the transformers and tubes are original. Even the gray 2-prong power cable is intact! The cosmetic condition of this particular example is quite impressive.