Speaker company EIA codes

There are several ways of identifying a manufacturer, or particular part number of a component in most audio gear that's been manufactured since the mid 1950s.  There's an EIA (Electronic Industries Association) code that identifies the manufacturer, or company, sometimes stamped (either in ink, or metal embossing, or ID tag) on the particular component - in this case the speaker.  Sometimes there is also another series of numbers stamped on the piece, this is the OEM (Original Equipment Manufacturer) part numbers above or below the EIA code, and in some cases parts makers elected not to include the EIA codes, so not all parts have them. These "Code" formats were not completely standardized, but a little deciphering will generally yield the info that's needed to identify the speaker in question. For example if you have 220325 on a speaker, you can tell that it's a Jensen speaker, but the year is either 1973, 1963, or 1953 from the '3', and the '25' is the week of production. The model type, or number, is sometimes stamped on the speaker frame as well; for example P10R, or C10Q.

    Below is a list I've compiled with some of the most common speakers used in audio/music today:

Speaker company

EIA Code

Eminence   

67 

CTS (Chicago Telephone Supply)

137

Jensen

220

Quam (Quam-Nichols)

270

Rola   

285

Utah  

328

Western Electric  

336

Altec Lansing Corp

391

North American Philips (Norelco)  

423

Oxford   

465

Waldom Electronics

555

Electro-Voice 

649

Klipsch   

843

Oaktron 

934

Fisher

1056

Pyle 

1098

WeberVST  

1279

Celestion

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If you see any irregularities, or know of any other information that might be useful on this page please feel free to contact me: e-mail: Ron@unclespot.com, or call: (209) 606-6467