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.