How do i put a date on a Vox AC30 with no serial number? Goldtop4g63 Member. Ive been looking all over online trying to find out what year this Vox AC 30 I. Gretsch&Vox Member. Maybe this might help? Ive been to that site the info there isn't detailed enough. Cirrus Member. You occasionally get AC30s from the early to mid '70s. Vox Schematics; Order Replacement Parts; FAQ. How much is my amp worth? How old is my vintage amplifier? Available for dating Fender amps by serial number but.

Dating the pot will get you in the ball park but those pots could have been sitting around for a long time before they made their way into a pedal. From Analogman's web site: The easiest way to date pedals is the same way you date some guitars and amps - by the POT CODES.

EH, MXR, and most US made effects used pots with EIA date codes on them. They usually start with 137 which is the manufacturer (137 = CTS), then the next digits are the year and week.

For example, 137 7903 would be a CTS pot, made in the 3rd week of 1979. Sometimes there are only 6 digits, for example 304731 would be 304 (stackpole) 7=1947 or 1957, 31st week. You can also date speakers this way!

Other manufacturer codes are: • 106: Allen Bradley • 134: Centralab • 137: CTS • 140: Clarostat • 220: Jensen (speakers) • 304: Stackpole • 328: Utah/Oxford speakers • 381: Bourns • 465: Oxford speakers • 285: Rola • 391: Altec-Lansing • 649: Electro-voice • 1098: Pyle • 67: Eminence On many Japanese effects there are no date codes on the pots, but there are usually date codes on the chips and sometimes on the capacitors. So check them carefully! If you see 7932 on the bottom of a chip, you can be pretty sure it is a date code for 1979.

Click to expand.Hard questions to answer. They are desirable.The Chrome Top seems to bring more money than the Identical Crybaby. Sound wise I have not heard the New V847A wah.All the others have or are to be discontinued as of this writing. As for repair,it depends on what is wrong. If it is the switch (cheap).If it is the pot? (Cheap HotPotz2 is a direct replacement). Check With Analogman for a repair.He is very reasonable and has a quick turnaround.

Bottom LINE.I would keep it as original as possible and have it repaired.If you don't like the sound after you get it working,sell it with confidence and the Analogman service history and buy you an RMC Wah.Good Luck. Dating the pot will get you in the ball park but those pots could have been sitting around for a long time before they made their way into a pedal. From Analogman's web site: The easiest way to date pedals is the same way you date some guitars and amps - by the POT CODES. EH, MXR, and most US made effects used pots with EIA date codes on them.

They usually start with 137 which is the manufacturer (137 = CTS), then the next digits are the year and week. For example, 137 7903 would be a CTS pot, made in the 3rd week of 1979.

Sometimes there are only 6 digits, for example 304731 would be 304 (stackpole) 7=1947 or 1957, 31st week. You can also date speakers this way! Other manufacturer codes are: • 106: Allen Bradley • 134: Centralab • 137: CTS • 140: Clarostat • 220: Jensen (speakers) • 304: Stackpole • 328: Utah/Oxford speakers • 381: Bourns • 465: Oxford speakers • 285: Rola • 391: Altec-Lansing • 649: Electro-voice • 1098: Pyle • 67: Eminence On many Japanese effects there are no date codes on the pots, but there are usually date codes on the chips and sometimes on the capacitors. So check them carefully! If you see 7932 on the bottom of a chip, you can be pretty sure it is a date code for 1979.