Bose L1 Model II System with Dual B2 Bass, A1 359381-0010 B&H
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Bose B2 Subwoofer & Custom Mounted A1 Packlite Amp System For L1 Model 1/1s/II | eBay
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Bose B2 Bass Module for Bose L1 Series Portable PA Systems Overview - Sweetwater Sound - YouTube
Bose B2 Passive Subwoofer - Evolution Music
B2 - Bose Portable PA Encyclopedia
Bose B2 bass module - musical instruments - by owner - sale - craigslist