Speakers Small with Crossover vs Speakers Large with LFE+Main/Extra Bass/Double Bass
We all know the coveted HT rule: Set your speakers as small/limited range with a 80-100Hz crossover, even if you have tower speakers, spare your amp and speakers the extra work, and let your sub take care of the lows.
Here's my thing...what do you tell the person who's a "purist" and only runs 2.0 audio? That he HAS to get a subwoofer? Likewise, what do you tell someone who has a stereo amp with a sub pre-out? No stereo amps, if not very few, have an internal crossover for the mains. Do you tell him he HAS to get an AVR so he can set a crossover for his mains?
I do agree that most times deciding not to run your mains full-range is best. But honestly, for those who don't have the space or money to have a second subwoofer, that may be the best way, the ONLY way, to get even bass distribution.
When are these rules applicable? Music, games, movies, all of the above? Or are we just blindly following rules?
Last but not least, isn't .1 discreet info ONLY sent to the sub in 5.1 content? Is it correct to say LFE+Main or not, your mains are never going to get that content when you're using the LFE line out connection?