The MQTD415 (dual-15 inch, dual 12-inch woofers) provides exceptional LF directivity, harnessing well known interference effects to create a directional LF system without enormous horns or baffles (Tuned Dipolar Array technology). It is designed to work with a complementary MQ2300 Series MF/HF loudspeakers, with the enclosure vertically configured for arraying in horizontal rows. Each driver has its own connections on the input panel.