Dating a fender rhodes
Before you touch anything inside the amp chassis, it’s imperative that these capacitors are discharged.
If you are unsure of this procedure, consult your local amp tech.
You should be able to find a number stamped somewhere on the speaker’s frame.
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.
(I’ve also included a few others brands you might encounter as aftermarket installations.) This should help you identify your speaker.
You also mentioned that you’re looking for a speaker option that decreases the overall volume of your amp.
I’ll list a few possible causes, but be aware that the cause of the hum in one amp isn’t necessarily the cause in another one. I hope these tips help get your Fenders into phenomenal form!
Fender has used only a handful of different speaker types over the years.
Here’s a list of brands along with their EIA codes.
Their G12C/S speaker is listed as 99.79 d B, while their G12C is listed at 96.10 d B.
The G12C is more than three d B lower, which equates to approximately half the loudness of the C/S.