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Share Speakers are extremely important when we are talking about tone. So, what should I get to achieve the tone I want? This article will be a maybe not so small post about the history of Celestion, as well as a brief description of each model they produced over the years. In , it was bought by British Rola and, one year later, production moved to Thames Ditton. It was used in Vox and early Marshall amps. It was also bright, lively and had a more restrained bottom end. But I will explain everything in details shortly.

Oxford Speaker Date Codes

Amplifier Features , Amplifiers celestion , g , g12h , g12m , g12t , greenback , vintage 30 David Szabados The old adage, “a chain is only as strong as its weakest link” can definitely be applied to the topic of speakers. Worn or mismatched speakers in wattage or impedance ohms are one thing, but different speaker designs also provide dramatic changes in tone and response for guitarists.

And this is an area that is all too often neglected. Ask many guitarists, “What speakers do you use? Many of our reader questions become the basis of new articles written and this is certainly an example of one of those.

How can I tell how old my speaker is? We attach a small label to either the side of the magnet or on the inside arm of the basket with our spec number and manufacturing/date code on it. The spec number will begin with the size of the speaker (i.e. for a 10″ it would be ).

The Code line-up features fully-programmable digital amps. The series was launched in January and caused some big waves in the industry at the time. There are four other models in the series: All the amps are closed-back designs, providing a focused, modern sound. Marshall Code 25 feature set The Code 25 has a smaller screen than the other models in the series. The control panel combines the Edit and Preset knobs, while the larger amps have dedicated knobs for each function. Apart from that, the models are really quite similar to one another.

The main difference between each one is the power amp and speaker set-up. The inch speaker on the Code 25 means it lacks some of the grunt of the inch speakers in the larger amps.

Jensen Speaker Date Codes

The purpose of this guide is to help you recognize a good Fender amp by reading about it and looking at pictures. It will allow you to make safer purchases on a global market without having to physically play an amp before acquiring one. There are many facts to consider when determining the condition and originality of a vintage amp.

While the collectors are primarily interested in originality, the musicians see the amp as an instrument. This will affect the priorities and decision making in a purchase. If your plan is to play and gig with your amp you should focus on tone and robustness.

In this case, “” is the Jensen manufacture code. “07” represents the year (), and “46” indicates that it was made in the 46th week of the year. Unfortunately on some older Jensen speakers, the year is only represented by a single digit (just “7” for example).

Vintage Guitars Info – dating vintage guitars, amps by date source code These are codes often seen stamped on components found in US made vintage tube equipment. This list is circa , and some codes have been reassigned or added since that time. Code formats were not completely standardized, but a little deciphering will generally yield the info of interest.

Note that many makers also stamped OEM Original Eqipment Manufacturer part numbers above or below the EIA code, in some cases parts makers or the customer elected not to include the EIA codes, so not all parts have them. They generally follow the following format: One alternate scheme is: Usually single digit date codes are from the ‘s, but have on occasion shown up in later decades, even up to the ‘s.

If one has a general idea of the age of the piece in question, usually the decade can be divined from that. Another alternate is in the format following: And another is like this: KE The reason was purportedly to allow factories to track the dates of manufacture of defective tubes especially important in the case of OEM customers that might send back entire batches of tubes , but avoid possible consumer complaints about “stale” tubes.

This sounds perhaps a little silly since the shelf life of tubes is decades, at least indefinite in practical terms , but some OEM’s might have beenn a bit irritated by occasional consumer complaints such as “my model TV has model tubes in it! EIA Code Lists for:

How to Date Jbl Speakers

Return to the Main Index. Sometimes there just isn’t enough information on electric instruments and amps to allow them to be properely dated. And many people ask me to try and determine the year of their old amplifier, or to help them with the year of their older off-brand electric guitar. 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?

This page is a collection of odds and ends information relating to speakers and speaker implementation. You might find some of the information useful in determining which speaker would be best suited to your application. Speaker Codes And What They Mean. The picture is a section of the basket rim of a speaker.

Home of the Choo Choo Subject: Serial number dating Mon Aug 24, 7: I don’t believe that I’ve posted it here yet. During the last few years, I have received more than a few T s that were the very first ones made on the gunstock carving machine and the Ekstrom-Carlson router, before production was even in sight. They were in order, 6 keys per side, 3 keys per side, and the bass. The next ones were: Note that the decimal points progressed through the eight numerals and the last of the ten had two decimals.

These would let us know and identify if any of the sales reps “lost” their sample. The Schmidt Serial Numbering head didn’t have the capability of letters, only numbers, so there would have been only a very few with the 8Mxxxxxx. There were a few specials, like the Magnolia wood T bass for Ken Achard, author of “The History and Development of the American Guitar” with rear mounted pickups and controls , that were made, with Hartley’s blessing, off the records and with their initials for serial numbers.

Vintage Electro Voice speaker dating?

Many D series JBLs are showing up with K paper on them, and then being passed off as “origianl cone” or “never reconed” to the unsuspecting public. I have been using JBL speakers since , well before the introduction of the K series speaker. I have owned D s, D s and at least 2 D s, all in original condition, some purchased brand new, if memory serves.

So I absolutely know the differences between the D and K series speaker cones from personal experience beginning before K speakers were ever on the market. Production of the D series speakers, both grey and Fender “branded” orange, ceased in about The K series speakers, introduced a year later, were always black framed, with no known exceptions I have been able to find.

code that reveals the manufacturer as Jensen and the production date as the 38th week of Speaker companies, along with other electrical manufacturers, were assigned EIA (Electronics Industry Alliance) codes which were used to identify their equipment. The *** portion of the rim code is the number assigned to Jensen.

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.

I have presented my amps in rough chronological order by era. The general information provided was obtained from books, online sources or personal observation. Other than the tweeds, where I am missing some of the high-end models, I believe you will find here a fairly good representation of Fender amp models in the brown, white and blackface eras.

HIWATT World Register

There is no reliable way to date amps other than to ask Fender customer support to look up the date from the serial number, although you may find a date code on the speaker. Early Tweeds The early green board tweed-covered amps were not lacquered. Once again, only the speaker is different. It is not old stock. It has the same cream board inside with the same components as every other current-production Blues Junior. Other Variants The Blues Junior chassis has also been used in the Two-Tone, a large amp with a inch and a inch speaker.

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. Below are many manufacturer source codes (which are the first 2,3, or 4 digits of the source-date code).

The Celestion register of speaker types – the “T” book – is printed in extenso insofar as it relates to 12″ speakers by Michael Doyle, “The History of Marshall” , appendix 1, pp. Info has also been usefully assembled on the Bygone Tones site. There seem to be three basic types 1 small nuts on the cap, date code stamped on frame; 2 small nuts on cap, date code on gasket; 3 large screws on cap, date code on gasket.

See the excellent comments on this Plexi Palace thread. The Rola G12 B – the 15 ohm version of the B above. The speaker below it on that page with code 04LL on gasket, but small screws on cap, is probably from November The Celestion 74 – 15 Watts – 15ohms An uncommon type of Celestion alnico. The lightweight version of this driver was the Celestion Pictures from this page.

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