Home entertainment system - It is good to have 5.1 , 6.1 & 7.1
Good companies are in the order of best to good
Bose, Harman Kardon, Sony & Quest Mystique - make sure you HAVE support for HD sound & THX & also have support for any 3 to or more of these - Dolby Digital EX, Dolby Digital Surround Sound, Dolby Pro Logic II, Dolby Pro Logic Surround, DTS Decoder and/or DTS ES
And to use your PC as a DVR or a PVR, and want to record HD-DVD. HDTV, Blu-Ray, HD-DivX, you may also want to consider the X1900's like the lower priced X1900XL coming out with 48 Shader Engines with the AVIVO support.
Everything else with your PC look great. You can always add more DDR Ram & HD space
I think Plasma burns is a myth, but don't quote me on that. And the last I've read is that the new DLP's use a better internal 3D engine which produces better lighting, so try googling DLP v.s LCD & see what you come up with.
I would really recommend Plasma. DLP is the biggest bang for teh buck and they come in big screens for low cost. LCDs don't go very big, and SuperXP is right about action DVDs on LCDs. Of course, Plasmas are very expensive. And the burn thing is a myth.... I can't afford it, so it sux... that's the average mentality.
Get a nice name brand system Reciever speakers Supporting the things listed before.
Edit: By name brand I dont mean a high doller Sony System. Get Quality. Research. A lot of systems you can purchase at Best Buy, or other local retails are washed out over priced junk. You want to go for what "audio people" call name brand. Some names were listed before, but MANY are available. Look for a professional HTS installer in your area. ask them for some names of some 'quality' companys. They will beable to tell you about stuff you couldnt imagine. An names you probably never even heard of.
If your able, have your PC and reciever support Optical. Best Sound quality.
Im pretty sure ALL recievers have the ability to change sources. So you will have no trouble at changing between your PC audio, and your "cable, or Satelite" audio.
on my setup I have: TV, DVD, Game consoles and an iPod all connected to my reciever that I can switch to whenever I want. just by pushing a button.
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does anyone know whether the Neo4 platinum have onboard optical audio out? I think it says it does but im not sure if it is the right thing...some websites call it coaxial S/P-DIF out and others just call it optical audio out