Make note that a source code beginning with 220 was made by jenson, 328 by utah, 285 rola, 137 cts and 134 by centralab amps with utah speakers are usually dated to 1945 and earlier, and rola speakers from the late 1940ss and early 1950s jenson speakers are from the 1950s, and cts and centralab speakers were used from the 1960s onward. 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. All during fender's life as an amplifier maker, then used speakers made by jensen (#220), cts (#137), oxford (#465), utah (#328) and altec-lansing (#391) till about 1961, jensen was the only fender speaker supplier. Jensen loudspeakers cannot be held liable for any problems that arise from the use of speakers placed into any amplifier other than the normal warranty guarantees click the table headers to sort the table.
The cts speakers were dropped, and carvin introduced their own line of speakers, dubbed magnalab these were entirely designed and built in-house, allowing for cost savings versus purchasing off-the-shelf speakers from jensen or altec. This public sculpture is an exercise in tedium, which seeks not to celebrate the end of the world but rather to embellish its significance through the use of physical and formal elements. The last two digits would refer to the week of the year dating cts speakers here is an example: eia would mean the 21st week of it is also advisable to add about 6 months to the date to allow for time these parts may have spent in storage. I have 4 eminence speakers that i'm not positive on what model they are they look just like legends the model is gbe12406-8 (possibly gbe1240g-8) they have a white label around the magnets that have gbe12406-6 121100 8ohm and serial numbers legends have a gb, 1258, etc part numbers.
Dating cts pots sorry if this has been discussed before but i am trying to date a les paul deluxe where the first number of the 6 digit serial number is difficult to read the pot date code seems to be 13770. 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 in 3 digit dates code, the 1st digit is the last digit of the year. Unfortunately on some older jensen speakers, the year is only represented by a single digit (just 7 for example) in that case, you will have to make a guess as to the decade in which the speaker was produced (1947, 1957, 1967, etc) if your speaker is in its original amplifier, you can make an educated guess using information from your amp. Weber speakers homepage --- loudspeakers, components, and equipment for the vintage musical instrument enthusiast amplifier and amplifier modification kits. Celestion design, develop and manufacture premium guitar speakers and bass speakers, as well as high-quality professional audio loudspeakers and compression drivers for sound reinforcement these renowned speakers are used onstage and in clubs, theatres and other venues the world over.
Cts: cts (chicago telephone supply) speakers were used occasionally in fender amps until the mid-1960s these are good quality speakers that tonally lie between jensens and oxfords the alnico 10-inch cts speaker was the most prevalent speaker in super reverbs from the mid-1960s through the 1970s. Hello people with the cost of guitar speakers rising, along with everything else now days, it pays to look for alternatives one alternative i have found, is the use of vintage alnico organ and stereo speakers. Fender tube amp codes: 1953-1970 - (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 monthan amp stamped na would have been made in jan of 1964 here is a list of the first letter showing the year of manufacture.
Dating fender transformers, speakers & potentiometers using eia codes eia (electronics industry association) source-date codes: electronic components such as transformers, potentiometers, speakers, and some capacitors are often stamped with a date code, which indicates the manufacturer and the manufacturing date. One has a code of 1376902 (cts pot, 2nd week of 1969), another has 1376852 (cts pot, 52nd week of 1968) stackpole pot as fitted to a 1971 fender telecaster fender centralab and cts pots, but used stackpole widely in the late 1960s and early 1970s. The cts speakers give way to eminence drivers around 1972 in 1980, ampeg designers install new speakers which give the cabinet a power handling rating of 350 watts. Celestion date codes since 1956, all celestion chassis drivers have been stamped with a date code (2 numbers and 2 letters), denoting the exact date of manufacture the codes are added on the production line and are placed on the speaker's housing leg or the magnet edge the following lists provide an accurate record of the date codes used.
This amp has 2-10 (not 2-12) speakers (cts-i think) the cabinet size is the same size as the larger t1 rtv the t1-twin is really the best of the t1 series without including the t1rvt model. Unfortunately, the serial numbers are of little help for dating one of these pre-ampeg models and eia date codes on components were used sporadically during the early post ww-ii years the only date codes that seems to be readily available is found on the speaker magnet located under the bell cover. It is also easy to identify the polarity of a speaker with a 15v battery by connecting the negative lead of the battery to one of the speaker terminals and the positive lead of the battery to the other speaker terminal and observing which way the speaker cone travels. A jensen speaker ref sp-5403, with rubber-stamped eia code 220 (for manufacturer – jensen), 00 (for year of manufacture – 1960) and 26 (for the week of manufacture) the electrical industries alliance (eia) was an organisation which operated from 1924 to 2011 to establish a system of codes for electrical products.