Owned a pair of these beasts for about 7 years and they play in medium sized semi detached house rooms. Great for Meaty moody base music as they are driven by two 8 inch bass units on each speaker. They push a serious base melody that would lend itself to old hardcore or smooth base music.
Unfortunately the tweeters blew on mine after 4 years. The best of these units comes pushing in at high volumes where plenty of bass feedback is needed. But beware, make sure your neighbours are out of the house before you commit your acoustic sins at high level volumes.