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I know it's not original, But I think it may be older than the amplifier itself. The date code is I know that was jensen's manufacturer code. What is confusing me is the date code, and appearance of the speaker.
It doesn't look like the others I've seen. It's silver, has a blue label, and 3 big phillips screws on the magnet. I know that in the '70'sJensen changed from a 6-digit code to a 7-digit code, displaying the last 2 digits of the year instead of only 1. I also know that the 44 is the week. I've been thinking that this may be one of the very early ceramic magnet jensens Most likeley I'd really appreciate your input on this.
Thanks, LJN p. I found out how to read the code on jensentone. I also have a little bit of information about how to determine the manufacture date of celestions I also have a celestion g12 30 in the same cab, and it dates to may 13 Please try to post a picture.
I spoke to a guy at elderly instruments, and he told me that the speaker is a He also told me that the appearance would vary, depending on who jensen built the speaker for. And he said that some silvertones came with jensens. I wouldn't trade my speakers for any of the new ones. The old ones sound better. Left: The source-date code on a speaker. In this case, the speaker is made by Rola in the 9th week of The decade, though not directly shown by the source-date code, was easily determined because this particular amp was only made during the s.
Note the font style of the source-date code number always seems to be the same, for all speaker manufacturers. Right: Same thing here.
Fender used Jensen speakers until when all Jensen production (and one engineer) Prior to the re-structuring of Jensen in ''72, Jensen quality had suffered terribly. Jensen manufacturer code, but by the end of changed to the Rola code. Regaining OEM customer confidence after the Jensen years was a long process due. So, the speaker in the image above would have been made by Jensen during the 27th week of or The year is confusing because it is only a single digit. In later years, the EIA converted to a 4 digit date code so the year could be easily identified. Following the success of these reissues, Jensen has released new speakers utilizing the same quality design as the original Jensen speakers, but dedicated to modern music, including speakers in the Jensen Jet Series. The Jensen name is synonymous with classic vintage tone, and is the pioneer in modern state-of-the-art speakers today.
Jensen speaker made in the 41st week of Pot Source Codes. During the 's, Fender used mostly Stackpole pots.
Then in roughly earlythey changed to CTS pots. This supply lasted for over five years.
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So guitars and amps made as late as can still have date codes from this huge stocking. Till aboutJensen was the only Fender speaker supplier.
Then from and later you see Fender using speakers from all the above mentioned makers. National, Valco, Supro Amplifier Products.
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Note the use of "" as a source code on these products. Actually, it's not a source code but is a manufacturers code for all National, Valco, Supro products. Found as second stamping on speakers as a date code XXX from through the 50's and 60's all the 's amps are generally field coil Rola spkrs. Manufacturer Source Codes.
Dating vintage jensen speakers
Below are many manufacturer source codes which are the first 2,3, or 4 digits of the source-date code. Prior to the re-structuring of Jensen in ''72, Jensen quality had suffered terribly. When Rola started to make speaker for Jensen inRola initially used the Jensen manufacturer code, but by the end of changed to the Rola code.
Other Speaker Manufacturers thanks to P. Bechtoldt and H. With all this information in mind, can you identify the following manufacturer and date of these source-date codes? Can you see why? If you can't, read the above information again! Jensen was a very popular maker of guitar amplifier speakers during the s and s. Fender and Gibson used them, and did many other makers. There are some other codes used on Jensen speakers, as shown below.
The first set of codes shows the type of magnet, size and quality of the speaker.
Jensen Speaker Shootout -DIRTY-: Blackbird, Tornado, P12N, C12N, Falcon, MOD 12-70 by Scott Sill
The "P12R" identifies the type of magnet, the size, and the quality of the speaker. The prefix code letter identifies the type of magnet used in the speaker.
Prior to the s, Field or ElectroMagnetic magnets were used.
Jan 13, Dating early Jensen C12N speakers Wally, yeah Jensen was winding down their production of musical instrument speakers during the early '70's, any of the N series are pretty rare. They still had their SMI, (Super Musical Instrument), LMI, (Lifetime Musical Instrument, my personal favorite) and MI,(Musical Instrument). Aug 10, These had the pre-fix F or EM - so I would think it more likely that your speaker is post 40's. In the 60's they changed the date code to include the decade so if it were a 68 your code should read So (jensen) 8 (8th year) 5 (5th week) I think your speaker is an early perhaps. Jul 29, You should be able to find a number stamped somewhere on the speaker's frame. 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.
Instead of a permanently magnetic magnet, electricity was used to make the magnetic field. These became obsolete with good Alnico magnets and weren't used much past the s.
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The most dangerous voltages are stored in electrolytic capacitors, even after the amp has been unplugged from the wall. If you are unsure of this procedure, consult your local amp tech.
Rare quad of some of vintage celestion speakers usually have a vintage jensen speaker and speakers jbl dating jbl dating vintage jensen concert speaker is. 50 results vintage speakers. Find great deals on who sells nos parts sets for vintage jensen and modern fender amps and audio products and antique speaker repair specialists. 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 number. The first three numbers will be which denotes the manufacturer as Jensen. The next number is the year of manufacture and the last two numbers will be the week of manufacture. Jun 04, The date code is I know that was jensen's manufacturer code. What is confusing me is the date code, and appearance of the speaker. It doesn't look like the others I've seen.
Jeff Bober is one of the godfathers of the low-wattage amp revolution. He co-founded and was originally the principal designer for Budda Amplification, though he launched EAST Amplification eastamplification. You can catch his podcasts at ampsandaxescast.
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