I was seeking for an EV product as my kit is ZX1, ZX1A, and SB122 speakers. When I saw this product, (as I own a bunch of old Impact 50's from Turbo), I was just amazed by the price, and ordered a first one to run some tests. I own a pair of old Gemini GVX Sub15P, and a pair of MeyerSound USW1, and I have to admit that this M15B works fine, and is nicely constructed (except for the handles!! Useless!)... Yes the paint could have been thicker... yes it could have come with a real crossover filter,... But once you talk about price... it has no challenger! I did buy a second one guys!