Actually, studio monitors do not 'lack' power at all...
Toreador93 said:
No, that's pretty much it. Monitors are very useful when recording, because they don't color the sound. However, they lack the power of "regular" speakers, and speaker placement is crucial for the best sound.
A pair of Tapco S8 pushes 120 watts through 8" woofers (w/ 1" tweeters) for -MSRP- $499... The S5's deliver a decent punch for 5" speakers. Why would studio monitors, which are supposedly for professionals, lack power?
Studio monitor's do attempt to deliver music as flat as possible. That is, they do not attempt to alter the music like JBL 'warms' sound, etc. Music becomes bassy, fuzzy, muddy, shallow, hollow etc. when speaker manufacturers begin to tweak the signal to match that of the acoustic performance of their speakers. Ever listended to a CD you owned for years while using a different sound setup, only to hear something you never heard in the music before?
Studio monitors won't 'hide' instruments from your ears. Personally, monitors are all I want to listen to music from since I like my music as flat as possible so I can eq it myself. Yes, it is important to place your monitors well for the best audio experience as some are near-field monitors, which means they are are designed to deliver music optimally in an area, say, 4-6' from your ears.
All that being said, I just got that Klipsch ProMedia 2.1 system for my parents from amazon.com $140 to the door. It is not bad, but at 3/4 volume the music begins to distort and I would never used them 'cranked.' The wires included do degrade the sound a bit. And, I think there is a slight chance that the ProMedia's amplifier may burn up and I will be getting another pair of speakers for them in a year. For $140, what other 2.1 system are your going to get though.
EDIT: Although, if I could find a pair of those Swan M200's suggested by Toreador93, I would definatly spend the extra $60 over the ProMedia 2.1...