The WPS series by OMNITRONIC convinces with its well thought-out package: apart from the undeniable neat looks, sound as well as functions are located on a high level. The 2-way systems, as the WPS-4S, are equipped with a mulit-step potentiometer, an ABS plastic body with a metal safety guard and a pivotable mounting bracket. Due to the trapezoid construction, the fitting in corners is as easy as anything.