This product has been discontinued and replaced with the 18 SUB 1000 XT model.
http://oversound.com.br/novo/Oversound-Speakers/18-SUB-1000-XT
This subwoofer produces high levels of sound pressure with high power level. Its dual central and side ventilation system provides excellent thermal dissipation generated in the 4 "(100 mm) inside / outside coil. High strength cone and suspension that allows you to withstand large displacements make up your moving assembly. High-performance speaker developed for use in compact boxes with great efficiency in low frequency responses.
