Dating stackpole potentiometers

Of course, these codes are only applicable to original components, not replacement parts.WARNING: Ampeg amplifiers, especially the high-powered amps such as the SVT and V-series, contain lethal voltages even when unplugged and turned off.

These codes can be found on speakers, transformers, pots, capacitors, and multi-section electrolytic "can" caps.

numbers beginning with 0) is that the second and third digits of the number denote the month in the first serial number system.

Therefore, a serial number where these two digits are greater than 12 must be from the second serial number system (1965 - 69).

It has a note at the top of the page that they were reprinting with permission from the authors of Ampeg: The Story Behind the Sound, ©1999, published by Hal Leonard.

If anyone feels this page should be taken down, please feel free to contact me.

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The M-12 Mercury circuit of 1960 used 6V6 power tubes, but the Mercury circuit of 1965 used 7591As.

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