This question is kind of off topic of the subwoofer, but the tower speakers I have did not come with any information because I bought them from my friend's dad when he upgraded his system and I got them for a great deal. But what kind of frequency range would the Technic towers speakers I have be able to support since there are four 10" subs in themselves. And does it all depend too on what my receiver can put out also? I'm just having a hard time justifying buying a 500 dollar subwoofer when I get the feeling I wont be able to tell much difference when I add it to my system since I already have a lot of bass, but I guess it isnt the ultra low base that the LFE will allow when I hook up a subwoofer.