Dating rola celestion speakers
Sometimes changes were made for reasons of durability, sometimes for cost-considerations, and other times for both reasons.
Regardless of these factors, while a G12M 25 watter from these two eras for example will sound different, they still inherently contain the basic characteristic tones and voicing of a G12M.
It looks like you are visiting our site on a browser that is really old.
Unfortunately, this means you can't get the full experience. This page is a collection of odds and ends information relating to speakers and speaker implementation.
The EIA only specifies manufacturer and year/week code.Anything else is at the discretion of the manufacturer.Click here for more Manufacturer Codes Speaker Implementation and Amplifier Configurations If you would like to add some info to this list, (any company, any model) feel free to write us with the info. The 6 digit code indicates what manufacturer made the speaker and when it was made. Here is a list of some of the speaker manufacturers and their EIA codes: So, the speaker in the image above would have been made by Jensen (220) during the 27th week of 1951 or 1961.
The year is confusing because it is only a single digit.The G12M to this writer’s ears is a speaker that changes character and color depending on its use and volume.