for a decent improvement in sound for $500 bucks.
As one of the old audiophiles around here, I'd love to see you dedicate a bit more budget & select a modest receiver & start with just two decent speakers, then add on as money is available to build a setup that will please for a decade at least.
The reason is my opinion that all HTIBS (Home Theater In a Box) try to do so much within a tight budget that they all have some kind of inherently fatal flaw. That said, I know the typical money strapped youth will get an HTIB, so be advised C/NET reviews concur that usually the Onkyo brand ones offer maximum performance for the price.
I believe the most important source of sound difference is with the speakers. Each brand usually has a distinctive sound character, therefore getting out & listening seriously to some good candidates is the key to determining which is most pleasing to you. Speakers seem expensive up front, but they pretty much don't just wear out, but can please for decades. The speakers will easily outlast the electronics which have considerable tech progress that makes them seem obsolete.
Some leading candidate brands to look for include: JBL, Polk, Klipsch, Paradigm, Usher, dynaudio, Energy, Infinity, PSB, NHT, B&W, & Monitor Audio. Though I believe strongly in picking what sounds best for an individual, excellent values are available in internet direct sales to customer makes such as Axiom & Ascend.
Your choice obviously. HTIB is convenient vs. better quality & value in the project of listening to select. Best of luck & listening pleasure.
I'm looking in to buying a surround sound system for my den and was wondering what I could get...
The room size is quite large, probably around 20' by 20'. I don't want to spend more than around $500.
What can I get that will give me good audio quality while watching DVD's or TV for that price?

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