Hello I made the 4 years I use it have good sound at low is acute with 500w, but the problem has already been reported to its piezo tweeter at the beginning and then it will no problem one of my filter crammer and the other the tweeter has snapped so we change the filter 2 is a piezo then after that it will take off n'on is to slam on a 400 amp to 500 of c due to the time I turn my amp with a 2 * 100 is the least I slap again but still human detachment but I pick up is we'll see if it still comes off in any case the piezo are sharper than titanium but titanium is more or it costau are great on price but I sava hu trouble finding the power because the carton amballage are not good at last to make the same choice it's true that I am disappointed in most of the brand new from the woofer is the case the rest of America to have problems a little comparison wedges boost of 350 w amp runs on 2 * 100w it is never a problem of human hand, the terminal that it took the games a small Serage we go again This a is a defect of the model last for a start is not bad