'Jensen Loudspeakers' is a company that manufactures speakers in many different shapes and sizes, ranging from 15 watts to 300 watts. They are mainly used in guitar and bass amplifiers. The speakers are made in
Italy. Jensen Loudspeakers is now a brand owned by
Audiovox.
The current
Fender Twin Reverb amp uses two 12" Jensen® C-12K speakers.
Model numbers
Jensen speakers used a model number that contained 4 to 6 characters.
The first character denotes the magnet type used.
★ FN = Field Coil
★ P =
Alnico
★ C =
Ceramic magnet
These are listed in the order in which they were made, with the P line starting in the 1940s and the C line starting around the 1960s.
The next one or two characters denotes speaker size.
★ 8 = 8"
★ 10 = 10"
★ 12 = 12"
★ 15 = 15"
The last character denotes power handling.
★ K = 100 W
★ N = 50 W
★ Q = 35 W
★ R = 25 W
P and L have also been seen, but the power handling is unknown.
These aspects together make up the speakers' code. For example: a Jensen C8R speaker is eight inches in size, has 25 W power, and has a ceramic magnet.
All Jensen speakers also include a date and manufacturer's code. Jensen's code is 220. Accompanying the company specific (EIA) code (220) is the last digit of the year and the 2 digits of the week manufactured, creating a 6 digit code usually imprinted on the speaker edge or the magnet housing. Thus a code of 220534 would denote a Jensen speaker manufactured in either 1955 or 1965 on the 34th week of that year. Most speaker (and other electronic component) manufacturers began adding the last 2 digits of the year in the 1970s, so the 6 digit code became a 7-digit code.
External links
★
Jensen Loudspeakers homepage