Bose L1 Portable Systems

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Bose Corporation makes the L1 Portable Systems. When introduced in 2003 they were called Personalized Amplification Systems for Musicians. Bose has been actively encouraging the use of the term L1 for this product line as the L1 portable line array. Colloquially it was known as PAS (Personalized Amplification System) but the acronym is a registered trademark of another company.[1]

On October 15, 2003,[2] Bose Corporation began selling the L1 Model I family of products through its internal CFDT sales division, and direct sales online through its website (in the U.S., Puerto Rico, Canada or U.S. Virgin Islands only). Guitar Center and Musicians Friend began selling these products on November 1, 2003, in stores nationwide.[3]

The original L1 System is now known simply as the L1 Classic.[4] It was replaced by the L1 Model I.[5] This new model looks and is functionally similar to the Classic. The L1 Model I is RoHS compliant, as is the L1® Model II.

The L1 Model I and Model II systems were introduced March 28, 2007 and became available for sale May 1 the same year, through its internal sales groups and participating authorized dealers.[6][7] At the same time the T1 ToneMatch Audio Engine was introduced.[8] This separate processor is the main input and user interface for the Model II. It is also compatible with the original L1 System and the L1® Compact that was to follow in 2009.

The L1 Compact was introduced April 2009.[9] This was significantly smaller and lighter than the previous portable line array systems (approximately 30 pounds). It used a 6 driver articulated array having approximately 180° horizontal dispersion and 40° vertical dispersion.[10]

In July 2012, the L1 Model I was discontinued.[11]

On September 27, 2012 Bose Corporation introduced the L1 Model 1S[12] and the B2 Bass Module.[13] The Model 1S looks identical to the Model II except that the Cylindrical Radiator® is only 12 drivers instead of 24 and it does not support the expanded bass options of the Model II.[14] The B2 Bass Module is approximately double the physical dimensions of the B1 Bass Module, and unlike the B1 it has a three-position sensing switch, allowing bass output to be adjusted for different applications.[15]

Bose maintains an active Musicians Community Message Board for support, and there is an owner maintained Unofficial Wiki and FAQ.