Cathy Cathy grew up in NY, moved to Florida in 1975 and graduated from the University of South Florida, with a degree in broadcasting. She and her husband Glenn started The Speaker Exchange in 1977. (Glenn later moved into Audio/Video sales and installations). In 1979, Cathy went to California for JBL speaker repair training and later received advanced training from Frank Spain, the then head of the Electro-Voice service department. She has continued to advance her audio education through many CES, NAMM, and CEDIA trade show classes. USPS (United States Post Office) USPS First Class: No estimated time of arrival. Delivery time varies by destination and is usually between 10 days to 4 weeks.
Nov 06, 2002 AFAIK, serial numbers don't really help and there are no date codes stamped on the speaker like other manufacturers do. Try the site below for lots of JBL information, history, models, etc. There also used to be some specs for vintage JBLs on the Jblpro.com site.
Limited tracking information. (Not recommended for Brazil) USPS Priority: 6-10 business days to customs with tracking information and insurance provided USPS Express: 3-5 business days to customs with tracking information and insurance provided UPS (United Parcel Service) Worldwide Express: 1-3 days to most countries, door to door. UPS has its own customs which speeds up delivery. Detailed tracking information and insurance provided Worldwide Priority: 3-5 days to most countries, door to door. Detailed tracking information and insurance provided.
Lansing L100 Century loudspeaker, the consumer version of the 4310 (LE20 tweeters), later the 4311 (LE25&LE26 tweeters) studio monitor, became the largest selling loudspeaker model of any company in the Seventies and more than 125,000 pairs were sold. By the end of the decade, recording studios in the United States used more of JBL’s monitors than all other brands’ monitors combined. Due to the materials used, the L100 drivers are as good today as when they were produced, but the overall sound can be vastly improved by modern crossover technology.