I often read about audiophiles who prefer just full range speakers alone. What does just a full range speaker bring to the listenning table, vs a properly set up sub system?
There are many reasons why many audiophiles prefer full-range speakers to a full-range speaker + dedicated woofer combo. Here are just a few...
1) For starters, getting a sub (or two, or four, etc..) to integrate seamlessly in with a set of speakers isn't easy. In fact, it's usually a time-consuming affair. Even for the pro's who work with this stuff on a daily basis. Why?
2) Well for one, when you introduce more bottom end, it's not uncommon to aggravate room modes that may have otherwise gone fairly unnoticed on your "full range" speakers. You'll hear these modes in the form of unnatural "boosts" at a given frequency (or frequencies) within your room. Figuring out where these modes are in your room will be a chore in and of itself. Once you figure out exactly where the problems reside - you'll then need to come up with an adequate resolution. That could require a bit of work. Worse yet, sub's are finicky creatures that could care less about your feng-shui. More times than not, a sub will tend to sound it's best in the very spot that you'd rather not put it in. So the question then becomes - how far are you willing to go to attain low-end perfection?
3) Alright, so let's say you manage to accomplish all of the above and everything is harmonized... if you're primarily into home-theater, then kick back, grab a cold one - and let out a grand HUZZAH! You're done! If however, you're trying to integrate a sub or two in with a snazzy stereo system, you've got something ELSE to worry about, and that something else is tone. In all my years of toying with hi-fi, I've come to appreciate one thing; every piece that goes into your speaker/amp/whatever sounds exactly like what it is. An aluminum tweeter will sound exactly like that. An electrostatic polymer will always sound like it's material. The problem here is that many subs will not carry the same 'tonal signature' as your main loudspeakers. If you're lucky, you'll happen across a powered-sub that uses woofer material that's similar to what's found on your main speakers. Anyway, finding a sub that will *tonally* match your system can become yet another chore.
4) My last observation has to do with placebo factor. Obviously this is subjective by nature and is *not* applicable to everybody. That said, I've come to find that many people are far more forgiving/accepting of their loudspeakers low-end limitations so long as the speakers fulfill their basic "bass" needs. However, once you throw "more" into the mix.. that 'more' being a powered sub or two.. the ballgame suddenly changes. Now you have more! And odds are, you probably paid quite a bit to get that 'more' - so you'll naturally want to make sure that you take complete advantage of the extra boom-boom!
Speaking personally, I find this situation to be something of a double edged sword. Why? Because integrating a sub can be difficult. Because I listen to a WIDE variety of music. Because there are times when I want bass that's super tight, tonally correct, and articulate (jazz, classical, folk, etc etc..), yet there are other times when I like my bass to get flat out nasty. I'm talking about gut-wrenching, teeth shattering bass, baby! So in the rare situations when I have access to 'more', it's tough for me to resist constantly fiddling with the subs to accommodate whatever music I'm listening to at the time. Obviously, that's my flaw. Not everybody is going to share it. But I nonetheless mention this stuff because I'm pretty sure I'm not alone in this regard. Having 'more' can be fun, but after awhile, I find myself looking back at the simpler days with rose tinted glasses... back to a time when I accepted a speakers limitations for what they were, and found a way to enjoy them just the same.
Well, that's my take on the situation...