JBL is short for James Bullough Lansing, who founded the company. JBL makes a wide range of speakers and subwoofers both under the JBL name and also under the Altec Lansing and Harman Kardon names. Per manufacturing regulations, the makers of electronics must include a minimum amount of production date information on their products. Depending on when the speakers were made this information may simply include a year and week or may be more specific, down to the day or hour. Tips Writer Bio
