This satellite is composed hp 12-inch to a 6-inch and 2-inch engine has 3-inch diaphragm in titanium, this three-way speaker can be related in 3-way active or passive. It remains true to very high level of spl. at the beginning I found that c was chre for what was normal c j was probably the only fool al used in a room and j avai bcp conflict because of the room, then I have tried for an evening in a large space with 2000 people I'd like if 4 satellites with 8 sub and I have t perfectly astonished rendering. Devai If I make another choice I will take this forum because it is faithful and strong. In 2 years I don not have anything broken it home for the heads or subs.