An early s pot from a Gibson guitar. Once decoded, the writing on the back or sides can be very informative. If you've been reading articles about dating a vintage guitar, you may well have come across mention of pot codes. The pots, or potentiometers to give their full name, are the variable resistors that control volume and tone. Better quality pots are often stamped with a number of codes; typically part numbers, date of production, manufacturers codes and resistance values.
Morganite pots were commonly fitted to British Vox guitars. Interestingly, these pots used more than one dating system, sometimes using numerals in the format WWY typically early sand sometimes, a letter-based format, similar to the Egen codes above. However these were in the format YM but, as with the Egen codes, they occasionally switched the letters to a MY format! The month code differed from Egen, above, in that the letter I was skipped - to prevent confusion with the number 1 - so it ran A-M Jan-Dec.
Year codes for the relevant period ran S-X Interestingly, some examples even had both a numeric and letter-based codes on the same pot.
Dating gibson pot codes
Pot dates can be a useful tool in dating guitars. But remember this is the date that the potentiometer was produced. Pots in an older guitar may have been replaced, and this should be considered, especially if the date suggested does not fit with other features of the guitar.
What's more, guitar companies sometimes took a very long time to use the potentiometer in question, and they may be considerably older than the guitar itself.
An early s pot from a Gibson guitar. Once decoded, the writing on the back or sides can be very informative. If you've been reading articles about dating a vintage guitar, you may well have come across mention of pot codes. The pots, or potentiometers to give their full name, are the variable resistors that control volume and tone. For earlier guitars or if this tool fails you can use the pot decoder to get a date of manufacture for the pots. Enter your Gibson guitar's 8 or 9 digit serial number in the box below to find the date of manufacture. This decoder currently supports Gibson guitars from to . This is a brief outline of the various pots and caps and wiring used by Gibson. This is not a complete summary but is a good start for the beginner. The basic companies Gibson used were IRC,CTS, Central Lab. IRC used code to begin the sequence of numbers on the pot case. Central Lab used and CTS used codes.
Fender, famously bought huge stocks of pots inand took almost a decade to use them all. Conversely, guitars were also built, but not wired and shipped immediately, resulting in newer pots in older guitars.
This is especially the case for guitars that were only ever shipped in tiny numbers. Pot dates are a useful tool in dating a guitar, but should always be used in conjunction with other known factors, such as hardware changes and serial numbers.
1958 Gibson Les Paul Standard Goldtop P90 / GuitarPoint
Resistance values are normally listed. The taper of a pot describe how the resistance changes with the turning of the pot.
The words LIN on a pot means a linear taper; turned half way, the resistance is at approx. As a general rule, volume pots have a logarithmic taper, and tone pots have a linear taper.
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Reading pot codes How to read pot codes, and what they mean. In this case the codes are stamped in very small font to the side of the pot casing. The volume pot of a Hofner President bass. These early Hofner pots have very little information; a resistance value of k and - in this case meaning week 38 of These appear on the underside of the pot. Morganite pots were produced in Jarrow, Tyne and Wear. The data on these pots spread a good way around the casing, and can not be seen in one image.
The left hand pot has two date codes, the right hand just one. Two Egen pots. The Egen brand can be seen stamped into the casing just next to the shaft, in the foreground pot. Another Egen brand pot - even without removing it from the guitar scratchplate, the tape covering the data is a dead giveaway of it's origins.
Enter Pot Number eg. Pot Code Reader. Stamped on every potentiometer (volume and tone pots) is a six- or seven-digit source code that tells who made the pot, as well as the week and the year. The source dating code is an element of standardization that is administered by the Electronics Industries Alliance (EIA). The EIA assigns. dating of potentiometers If the serial number of an (electric) guitar is missing or is no longer readable, you can also find the approximate age of the guitar on the basis of the potentiometers. On the potentiometer is a code that gives information about the manufacturer and the year and week when it is made. Jan 24, CTS pot date codes Discussion in 'Stratocaster Discussion Forum' started by syncopa, Jul 29, syncopa Strat-Talker. Messages: after that is the year (2) numbers, the the week of manufacture that year. So a code of would be a pot made in the 12th week of that year. Bodean, Jul 29, #2. dirocyn likes this. syncopa Strat.
Stackpole pot as fitted to a Fender Telecaster. Note this is the same part number as the Stackpole pot above, although now produced by CTS. Although some of these have codes that may incorporate a date, deciphering this is currently impossible. Do you have any information on dating Lesa potentiometers? If so please comment.
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Guitar potentiometers for sale. Turns perfectly and sounds great. Original nut and lock washer included as pictured. Original tone cap still attached - sounds and works perfeclty. Date code is 24th week of Correct for your Vintage Strat! These are incredibly rare, and if you need to restore your high Nut is included!!!
All sales are final, NO refunds and NO returns. Being sold as is in USED condition. Due to age and useage, No Warranty and No guaranty!!! What you see in the picture is what you get. Only buy this Guitar Potentiometer They measure k and k.
All terminals are present and functioning- some residual solder left. No breaks, mods, or repairs besides some solder removal to verify date codes.
SKU Some residual solder left on the terminals and honest patina from age. SKULot Find more vintage guitars for sale at vintageguitarsforsale. There are 10 comments on this article so far. Add your comment. Comment on this article.
Email address. Your comments. Anti-spam question - to catch web robots How many legs does a tripod have? AES seems to have all the pots at reasonable prices so even though tough I'll replace all On the component layout diagram it shows the values of the pots, then A, L or RA I haven't measured them yet, have an analog meter in the mail to be delivered tomorrow I think that would be better than playing with a digital when the numbers would be hopping around since they are dirty.
Anyone venture an opinion? Reply to Timothy Tapio's comment. The volume pot needs replacing and I can't as yet, find a direct replacment. The numbers on the side read - k not sure if the fist 3 digits are the date? Any ideas? Reply to Martyn's comment. The numbers on the pots read K Does anyone know what says about the date? I thought the first two numbers signified the week and the last number the year.
I thought the "3" indicated the pots werebut can't make sense of the "92". Would appreciate any help. Reply to Ron Watkins's comment. Alex Comment left 11th April reply who done the soldering on these pots : what a mess : Reply to Alex's comment. Joe Comment left 5th December reply I've got two pots here from a lap steel harness bakelite that has two sets of numbers on the pot. Reply to vic's comment. Dennis LaCour Comment left 27th February reply cts Hi can you identify this cts pot code?
Reply to Dennis LaCour's comment. Tim Comment left 23rd December reply Hi, Dennis. The CTS pot is identified by the first three numbers of Reply to Tim's comment.
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Reading pot codes
Recent posts on vintage guitar and bass Fender catalog, Fender Lovin' Care. Catalog scan. The Fender Lovin' Care catalog consisted of 48 pages of electric guitars, basses, amplifiers, steel guitars, acoustic guitars, banjos and keyboards.
Like the previous catalog, this featured the company's guitars in a variety of interesting settings around California, from the Whiskey-A-Go-Go, to the Hollywood Bowl. Several instruments were making their first appearance amongst it's pages: the Telecaster bass, Montego and LTD jazz guitars, and the Redondo acoustic.
The Eko Ranger series of guitars was incredibly popular in the second half of the s and through the s, selling in very large numbers.
Not a bad guitar; a little quiet, but pretty playable. These were great value inand because they sold so many, they are easy to find and excellent value today.
The Gibson Serial Number Decoder currently supports 6 formats from 4 Factories. For guitars made prior to use the extended search function. This new function will try to match the serial number against older formats, details required for an exact match are listed in yellow. Please post any comments, particularly bugs in the user feedback. Jul 26, 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. On 4 digits date codes, the 1st and 2nd digits are the last two digits of the year. 4 digit date codes were used in the 's and later (this makes determining the year much simplier!) On 3 digit date codes, you have to "guess" the decade of the pot or speaker. Usually this isn't too difficult. Pots used by Fender. The middle one is a CTS pot (Chicago Telephone Supply, manufacturer #) from the 30th week of
It was the Vox equivalent to the Fender Precision bass, and was one of the most expensive Vox guitars produced. It was actually a great playing bass, rather similar to the Precision in feel and sound, but was probably just too expensive compared to an actual Fender and consequently sold poorly. Having small hands, I tend to like the 60's necks. Also, I know everyone has a different opinion on PU's, but as the PU's in this guitar have no covers and are crappy looking I will be ordering a set of gold covered?
Grew up playing Fender. Whatever the tracks warrant. The source-date code on a pot is a 6 or 7 digit code impressed into the casing of the potentiometer. 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.
On 4 digits date codes, the 1st and 2nd digits are the last two digits of the year. In either case, the remaining 2 digits are the week of manufacture 01 to With this in mind, remember if the last two digits of the source-date code are greater than 52, you're not looking at the source-date code! On 3 digit date codes, you have to "guess" the decade of the pot or speaker.
Usually this isn't too difficult. This means that given this is an original part this is the earliest possible date your guitar was made. As for the serial number make sure you are reading it correctly.
A six digit serial number repeats itself fromto The differance being the "Made in the USA" stamp. For instance a serial number could range from to Where as those same numbers duplicated between - Could even be a six digit number preceeded by a letter after Or six digits and the letter "A" in I would be willing to guess that your model is abased on your pot codes, and the serial number begins with either a 1,2,3,4,5,6, or 8.
Numbers begining with "7" was limited toand begining with "0" This is confusing, but I hope it helps. You can post now and register later. If you have an account, sign in now to post with your account. Note: Your post will require moderator approval before it will be visible. Paste as plain text instead. Only 75 emoji are allowed.