Go to bose.com and check out their spec's. Oh wait! They don't post their spec's. The dealer agreement for Bose states that you will not demo Bose speakers against any other brand of speakers, or it will violate your Bose Dealer Agreement. All this tells me something. The lifestyle systems have cool technology built into them but they are still using their cube and jewel cube speakers.
The saying used to be "all high's no lows, it must be bose." For their passive subs.
