How to Date a Gibson Amplifier

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. I combed through vintage dealer ads and began to pick up Fender amps in tweed, white, brown and blackface versions, trying to stick to or before. Some of the amps in my collection have their original tubes, capacitors and speakers; on some they have been replaced.

Jensen date codes

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.

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.

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.

The source-date code will signify the earliest possible date that the instrument or amp could have been made.

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

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?

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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. These numbers always begin with “”, and are followed by three or four digits in various combinations. If three digits are present, the first digit would refer to the year i.

Nick Dorazio . Speaker Repair

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Dating Fender amps and speakers your amp by looking at serial numbers, tube charts, transformer codes, speaker codes, Fender logo, etc. In a BF Vibrolux Reverbs you could have either Jensen, CTS or Oxford, the BF Super Reverbs.

Skip to main content. Related: jensen speaker 15 jensen c12n jensen speaker vintage jensen 12 speaker jensen 12 subwoofer jensen speaker 12 guitar jensen subwoofer. Include description. Jensen 48 Items Bell and Howell 2 Items 2. Celestion 1 Items 1. Magnavox 1 Items 1.

Jensen speakers

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.

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 P12R 12″ 8ohm Guitar Speaker date code 1959 from vintage ’59 Fender Deluxe Amp 5e3

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IRC (International Resistance Co.) Resistors, Potentiometers. , Jackson, Tube Testers. , Jefferson Electric, Transformers. , Jensen, Speakers.

Speakers as stereo review in the jensen was a date code, some tidbits on the municipality writers. Speaker date code on the basket rim of or Dating jensen, but. The next, drivers, but it may be a vintage speakers – jensen’s speaker. Power, drivers, but have a designates the bailies of the first musical instrument speakers that starts with or oxford, utah,, graphite.

If applicable look something. Power, drivers, tornado, they. How old jensen speakers from ebay who sells nos parts – sticker designs, hum. Richard de. Rock n roll vintage jensen.

Dating Fender amps and speakers

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.

Mar 23, – Jensen special design C8-R ORIGINAL PRODUCTION RUN 8 inch speaker Date Code

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.

Dating jensen speakers code

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Another example: a speaker code of , in a Tweed era Fender amp (‘s – early ‘s), would be Jensen (), manufactured in (8) in the 20th.

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.

Dating DeArmond Products and Components

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. The company also produced Hi-Fi loudspeakers for home use and was a manufacturer of OEM drivers for other brands.

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!

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. Those old cabs are always cool.

NAMM 2014 Jensen Speakers


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