This is a folded horn subwoofer which has been specificly designed to reproduce very deep bass frequencies with maxium efficiency, speed and impact. It is intended to be used with Soundbullet LA series line array speakers such as the LA-10F/ LA-12F / LA-15F and also the H series enclosure in the most demanding touring situations where extreme levels of bass required. It is also idea for reproduce concentrated bass energy of contemporary dance music in club environments This is a high performance sub-bass system designed for use with large scale LA and H series systems, in both touring and install applications. It features twin, 1000watt, 18"(460mm) drive unit with magnet structure and suspension engineered for maxium linear excursion. A flux demodulation ring magnet system which devides by 3 the harmonic distortion in the low frequency domain and reduce the inductance modulation by 50%, leading to dynamic and stable sound quality...