THX, Dolby Digital, & DTS

I've been looking at buying some new 5.1 speakers for my computer, and right now my eyes are on the Klipsch ProMedia Ultra 5.1. However, I would also like to use these speakers for my home theatre setup, but I realize these are just basic analog 5.1 speakers, which means no THX, Dolby Digital, DTS, etc... etc... Media such as DVDs or video game consoles DO use Dolby/DTS, so would these speakers really lose any grade by not directly supporting these?

If your DVD player and game console has speaker outputs, you won't loose any audio quality, since they should be able to support Dolby straight to the speakers. The only really important thing to remember is that nowadays any speaker setup that has a powerlevel of less than nine thousand is just a bad buy.

When a reasonably good Onkyo 7.1 HTIB including full A/V receiver costs only $400 (HT-S790), any PC speaker setup over $250 is a huge waste for any purpose, HT or PC.  All "high-end" PC speakers, from the lowly z-5500 5.1s to the great PM Ultra 5.1s to the excellent Gigaworks s750 7.1s, lack the power of even the most basic HT speakers, except in the bass department.

So:
- speakers are rated for more power (and sound good for the price)
- center speaker is D'Appolito-arranged, as are the fronts; sides & rears are dual-driver
- receiver has more/better digital decoders than any PC decoder, old or current, from Klipsch, Logitech, or Creative
- receiver and all speakers use standard speaker cables and are independently upgradeable
- video selector, including component, with on-screen display
- real remote control
- zOMG AM/FM TOONAR

BTW, ignore THX ratings on PC shit.  The Ultras aren't THX Multimedia-rated anymore while cheap shit like the z-5500 are, and that means NOTHING.  THX only makes a difference when considering whether a real receiver uses THX decoders.  And THX decoders are just modified Dolby decoders for use on Dolby material.  No material in the world requires it that can't also be handled appropriately by Dolby's standard decoders.  When something isn't THX-rated, it just means that the manufacturer either didn't pay for the THX testing or license their decoders.  Fuck it.

>>2
Some DVD players have RCA analog outs, not 1/8" miniplug jacks.  And source switching with analog PC speakers becomes a nightmare.  Game consoles from the current and last generation only have optical digital outs for discrete multichannel, not multiple analog pre-amp jacks.

Buying a HTIB solves both problems.  The only additional work will be in getting the right cables to connect the PC to the receiver, which just means using digital or buying a few stereo minijack to RCA adapters or cables for analog.  *  Simple.

* If you're using a Creative card, they use a bullshit minijack configuration different from everyone else's.  You would need some special camcorder (three-channel) minijack to RCA adapters/cables for one of their cards.