I do not own these speakers but in fact I made myself (double subs 38 cms those used in the TSX 15) and the result is quite satisfactory for the price that each sub cost (35 € each ). So it made me the speakers with a power of 500 W into 4 ohms in each chamber because there are two subs 250 W 8 ohms connected in parallel (and tweeters with filters of course), all connected to an amplifier (2 x 250W rms) I must say it looks good, it's not clear that the high end but to begin in sound is good. They are very good speakers basic and why I put them high marks all + they are cheap.