Sub Match Cable Sub Match connectivity is a proprietary technology invented by Bose to connect the Sub 1 or Sub 2 powered bass module to the L1 Pro 32 portable line array " or to daisy-chain an additional Sub 1 or Sub 2 to the system. A Sub Match cable is included with each L1 Pro 32 line array & delivers both power & audio from your L1 Pro 32 to your Sub 1 or Sub 2 subwoofer making setup easier & allowing the system&153;s crossover & EQ to automatically calibrate for optimal sound. & if you want to connect a second Sub 1 or Sub 2 to your L1 Pro 32 system all you need is a second Sub Match cable.\n\n FEATURES \n&162; Proprietary power & audio cable that connects the Sub 1 or Sub 2 powered bass module to the L1 Pro 32 portable line array\n&162; Daisy-chain a second Sub 1 or Sub 2 subwoofer to your L1 Pro 32 system\n&162; Thick 12-gauge cable with spring-loaded locking collar for secure connection\n&162; NOTE: One Sub Match cable is included with purchase of the L1 Pro 32 line array; additional cables sold separately Features Single/ Pair Single \n\n\n\n\n\n\n\n