Active Subwoofer 25cm of LTC called SW 100 is the processing (if you look at it more closely) no Highleight. But from 2 meters which already no longer matters! For the price of 76,80 EUR incl. Shipping goes also fully in order! But now the technical side, as does the part all right again! Strong, deep and dry bass without droning! I'm really excited! The connection and setting are perfect! Properly set the part goes in rooms with approximately 20-30 square meters very well to work! I have to compare an other brand 25cm subwoofer is not really better, but is better processed and had it tasted well over twice as much! From me 5 stars for the overall successful price / performance ratio!