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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.〔(Bose requests that L1 owners not use the term PAS )〕 On October 15, 2003,〔(Bose L1 Timeline )〕 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.〔(Bose L1 wiki )〕 The original L1 System is now known simply as the L1 Classic.〔(L1™ Different Models )〕 It was replaced by the L1 Model I.〔(L1® Model I )〕 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.〔(Bose L1 wiki )〕〔(Bose L1 model II and T1 press release )〕 At the same time the T1 ToneMatch Audio Engine was introduced.〔(T1 ToneMatch® Audio Engine )〕 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.〔(L1 Compact introduced )〕 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.〔(Compact Array Section technical details )〕 In July 2012, the L1 Model I was discontinued.〔(Bose L1 Model I )〕 On September 27, 2012 Bose Corporation introduced the L1 Model 1S〔(Bose Model 1S )〕 and the B2 Bass Module.〔(Bose B2 Bass Module )〕 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.〔(Bose Model 1S )〕 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.〔(B2 Bass Module general description )〕 Bose maintains an active (Musicians Community Message Board ) for support, and there is an owner maintained (Unofficial Wiki and FAQ ). == Notes == 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Bose L1 Portable Systems」の詳細全文を読む スポンサード リンク
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