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Author Topic: The "THX" button on several home processors John Walsh Film God Posts: 2490 From: Connecticut, USA, Earth, Milky Way Registered: Oct 1999 posted 07-09-2009 09:34 PM                     I see a selection on several audio/video home processors that allows the user to select, "THX." What exactly does this do?  |  IP: Logged Bobby Henderson "Ask me about Trajan." Posts: 10973 From: Lawton, OK, USA Registered: Apr 2001 posted 07-09-2009 09:52 PM                     I think it's supposed to compensate for the "X curve" factored into certain movie sound mixes. There is a difference in audio character between full range stage speakers and smaller surround speakers in commercial movie theaters. The THX thing is supposed to help make the audio coming from all the speakers sound more even when the same mix is played back in home theater settings. One problem is not all movie mixes adjust for the X-curve. It seems to be common for certain movies to have multiple masters or different mix flavors. For instance the DTS-HD and Dolby TrueHD audio tracks on the Close Encounters Blu-ray sound very different from each other despite both audio formats being lossless and effectively equal in capability. Another issue is the Home THX concept is designed for diffuse surround, not point source activity. Home THX surround speakers will usually have two or three drivers pointing to the front and back walls rather than toward the listener.  |  IP: Logged

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