JL Audio is an American manufacturer of consumer audio products. Headquartered in Miramar, FL, they produce marine, home, and mobile audio products, but are best known for their subwoofers. JL Audio is known as one of the pioneers of the car audio industry. JL Audio was founded in 1975 by James Birch and Lucio Proni. They used the first letter of each of their names, to form a company name, hence "JL". Their first products were home speaker systems as well as home speaker "kits."