Dating guitar marsland speaker code
If the pot is an original, it indicates a date before which the guitar could not have been built – so it’s always a good idea to have extra reference material around.
Finally, a word of caution: This method applies only to American made pots and not all potentiometer manufacturers subscribed to the EIA source code date.
Let’s take a look at a couple speakers from Warehouse Guitar Speakers (wgs4.com) so I can better explain this.
Their G12C/S speaker is listed as 99.79 d B, while their G12C is listed at 96.10 d B.
The first three numbers will be 220 which denotes the manufacturer as Jensen.
It'd be awesome if you could upgrade to a modern browser, especially Chrome and Firefox as that is the best out there right now.
Whether it’s a vintage amp or a recent model such as this Fender Pro Reverb, hum can have several causes.
The format may look like this: 220 637 Here the number 220 designates the speaker as a Jensen, and 637 indicates a production date of the 37th week of 1956 or 1966.
Fender has used only a handful of different speaker types over the years.
Possible culprits include the preamp tubes, the power tubes, the hum balance resistors, and the power supply caps.