d&b audiotechnik E15X 15-Inch NLT4F/M Passive Subwoofer 100867600 AC2215/64 is part of JBL's

AC2215/64 is part of JBL's AE Application Engineered Series

Blackmagic URSA Studio Viewfinder

Integrated rails allow for flown configuration with other loudspeakers of the same family

Detachable cable

d&b audiotechnik E15X 15-Inch NLT4F/M Passive Subwoofer 100867600 AC2215/64 is part of JBL'sd&b audiotechnik E15X 15 Inch NLT4F M Passive Subwoofer The E15X SUB is a compact, lightweight, high performance subwoofer for use with d&b E Series loudspeakers. The built in passive crossover network allows the E15X SUB to be operated in parallel to E12 or E12 D loudspeakers on the same amplifier channel, greatly extending the low frequency headroom and bandwidth of the systems. Alternatively it can be operated actively driven by its own amplifier