By Lee from Yakima, WA on 8/31/2007

These speakers more than earn their THX certification. From incredibly high highs, to full, undistorted lows that are sure to shake your house; these speakers perform beautifully. The sound quality of these speakers is superb. The RCA audio output converter that it comes with allows you to hook them up to your DVD player, video game console, etc. This is a wonderful bonus because, hook these speakers up to your DVD player and your movies are made THAT much more enjoyable. The speakers flood the room with sound and the 8" subwoofer provides deep, crunching bass for explosions, etc. Your neighbors will really love you for getting these speakers.
All of these pluses aside, there was one problem that I encountered with these speakers almost a year after I got them. The volume knob gave out to where whenever you'd adjust the volume, static would come through the right channel. Not only that, but the right channel would be much weaker than the left at certain volume levels. I'm not sure if this problem exists in all of them or if my set was a special case but, these speakers come with a 2 year warranty and Logitech was wonderful in handling my problem. They actually wound up sending me a brand new set of speakers after I sent them the defective volume knob. So, all in all, don't let my troubles shy you away from purchasing theses speakers because they are the best sound system that I've heard in a long time. I'd even choose these over a vast majority of the surround sound systems that are out there; and that's all thanks to the amazing THX performance.