JBL is an American audio electronics company currently owned by Harman International. James B. Lansing founded JBL the year after leaving Altec Lansing as their Vice President of Engineering in 1945. The company was first called Lansing Sound, Incorporated, and dated from 1 October 1946 and then changed its name to James B. Lansing Sound. The first products model D101 15-inch loudspeaker and D175 The high frequency driver. The 1970s saw JBL become a household brand, starting with the famous L-100, which was the best-selling loudspeaker model of any company to that date. At that time it was a major JBL expansion in the professional audio field from their studio monitors. By 1977 more recording studios were using JBL monitors than all other brands combined.