The B4-SUB features d&b audiotechnik's patented cardioid design, using one amplifier channel and building on CSA (cardioid subwoofer array) techniques the company began using in 2004. The cabinet houses two long-excursion neodymium drivers: a front-facing 15" driver in bass-reflex design and a 12" driver in a two-chamber bandpass design to the rear. The design
Tools of the Trade: d&b audiotechnik B4-SUB
The B4-SUB features d&b audiotechnik's patented cardioid design using only one amplifier channel.