I have one word to say, go for it ... I bought this subwoofer saying, at this price I do not risk much. Well, it's impressive. Small but tough as they say. During the first test, the default setting of my amp (YAMAHA RX-V475) did not suit me but after some modifications, it is day and night. This housing more than enough to shake the walls in a room of 35 m² with some adjustments. Buy the eyes closed, at this price and also performance, what more ...?