 The company's first surround sound speakers were the "Acoustimass 6" and "Acoustimass 10", both released in 1996.Both products were 5.1 systems, with the Acoustimass 6 using "single cube" satellite speakers and the Acoustimass 10 using "double cube" satellite speakers.The "Acoustimass 15" 5.1 system was sold from 1998 until 2006, and the "Acoustimass 16" 6.1 system was sold from 2002 until 2006.