Nexus Q 4x12" Horn-Loaded Upper Bass Speaker 2x2000W Black/RedAs part of the Nexus LF system, the Nexus Q delivers the upper bass frequencies via a new enclosure design. The four high power 12 drivers use a front loaded horn to achieve high efficiency and a rear port with a newly developed pressure gradient arrangement. This configuration is far more beneficial than previous loading techniques and results in an enclosure with unparalleled output, definition, and the total elimination of colouration from any