Dating a fender amp by serial
This is the third set of valves I have purchased for my amps from this company , I also have a Marshall TSL 601.
Dating Fender Amps 1951-1967 – Tube chart on the inside of the amp is stamped with two letters (A – Q): The first letter designates the year and the second letter designates the month.
A 1951 JAN B 1952 FEB C 1953 MAR D 1954 APR E 1955 MAY F 1956 JUN G 1957 JUL H 1958 AUG I 1959 SEP J 1960 OCT K 1961 NOV L 1962 DEC M 1963 N 1964 O 1965 P 1966 Q 1967 Mid ’70s – early ’80s – Amplifiers are dated much the same way as Fender guitars from the same era: B 5 digits 1975 – 1976 A6 5 digits 1976 A7 5 digits 1977 A8 5 digits 1978 A9 5 digits 1979 F0 5 digits 1980 F1 5 digits 1981 F2 5 digits 1982 – 1983 F3 5 digits 1983 – 1984 F4 5 digits 1984 – 1985 F9 5 digits 1979 – 1980 Dating Contemporary Fender Amplifiers All Fender amplifiers manufactured from 1990 – present include a date code printed on the quality assurance (QA) sticker on the back of the amp chassis, and are dated the by the first letter as the year and the second letter as the month.
A 1990 JAN B 1991 FEB C 1992 MAR D 1993 APR E 1994 MAY F 1995 JUN G 1996 JUL H 1997 AUG I 1998 SEP J 1999 OCT K 2000 NOV L 2001 DEC M 2002 N 2003 O 2004 P 2005 ALL other Fender Amplifiers can be dated by the components inside: In almost every Fender amplifier there are several EIA (manufacturer) codes followed by a date code, typically found on the speaker(s), transformer(s), tubes, caps, and occasionally pots.
Not only did Stewart suggest a more suitable valve for the tone I was after, we had a really enjoyable chat and he give me some really useful tips for future fault finding.
Follow your nose and shop here folks, you will not be disappointed!! "The valves for my Vox AC30CC2X arrived next day which was impressive .
The EIA code will consist of 3 numbers followed by a date code of 3 or 4 numbers designating the year and the week.
The first of the three digits tells us the last digit of the year (unfortunately not decade specific) and the last two numbers tell us the week.A – 1951 A – January B – 1952 B – February C – 1953 C – March D – 1954 D – April E – 1955 E – May F – 1956 F – June G – 1957 G – July H – 1958 H – August I – 1959 I – September J – 1960 J – October K – 1961 K – November L – 1962 L – December M – 1963 N – 1964 O – 1965 P – 1966 Q – 1967 Another way to get a close estimate of when your amp was made is to read the codes on the transformers.Most post tweed Fenders had trannys manufactured by Schumacher.Other things to look for include chasses placed in cabinets from a different year, “doctored” tube charts, non-original control plates (usually reproductions) on silverface amps, original transformer bell ends (they have correct date codes, of course) on non-original transformers, and non-original knobs (either repro or silverface knobs on blackface amps).unusual things can be found such as the empty “Pulse Adjust” hole on the rear of early ’60 brown amps, the “middle” volume control, use of tweed style grill cloth, strange non-documented transitional circuits, and changes in tolex color including the super-rare cream colored “brown” tolex that is found on some late ’60 amps. Given that people may refer to this information seeking specific production quantities of amps they are curious about, it should be pointed out that the serial numbers apply to chassis types, and not specifically to amplifier models.Looking at serial numbers next to the ’60 5G5 brown Pro Amp for example, we see numbers ranging from 00001 to 02000, suggesting that there are 2000 of these amplifiers made in ’60.