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Discussion Starter #1
I am at a lost as to why people buy THX Certified Receivers when it seems that THX alters the sound. Let's assume everything being equal and you watch your movies at reference level, when you choose DD, DD+ or whatever, why would you want to change it to THX or THX2, when it alters the sound?


Given that we are trying to get the best sound possible, would it not be better to hear the sound as the artist intended by using the options other than THX?


Any thoughts?
 

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well no


because the artist intended to mix the audio for large venues. Which when played at smaller venues causes a massive increase in the high frequencies. Theater speakers are limited to about 16khz on the top end. Guess what THX does to the high end? reduces the high end sound but not completely eliminates it.


It also depends on your speakers.


For instance. On my Klipsch Ultra THX 2 package. No THX mode makes the high freq "unbareable" at reference.
 

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I watch many discs in THX mode...In my experience, it typically improves the movie sound.
 

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I use it often enough. It's nice to have the software to try and experiment with.


The OP would be surprised if he checked every title just how many do seem better with the THX modes.
 

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Quote:
Originally Posted by Figgie /forum/post/13001612


Theater speakers are limited to about 16khz on the top end.

Did not know this...it had always been my understanding that the movie soundtracks were mixed 'bright' because of the acoustic dynamics of the typical theater itself, and not the speakers.


The thing I find frustrating about THX processing is deciding whether or not it should be applied to 5.1 television programming never intended to be shown in a theater.


Shows like 'Battlestar Galactica' or 'Lost', etc...were they mastered to THX (audio) specfications? If any programming is, how do you before the end credits roll?



I guess there is always 'whichever sounds better', eh?
 

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Discussion Starter #6

Quote:
Originally Posted by Figgie /forum/post/13001612


well no


because the artist intended to mix the audio for large venues. Which when played at smaller venues causes a massive increase in the high frequencies. Theater speakers are limited to about 16khz on the top end. Guess what THX does to the high end? reduces the high end sound but not completely eliminates it.


It also depends on your speakers.


For instance. On my Klipsch Ultra THX 2 package. No THX mode makes the high freq "unbareable" at reference.

Thanks for the information. Didn't know about the high frequencies issue.


So assuming that I have a THX certified Receiver, yet my speakers aren't THX certified, wouldn't that make a different?


I have noticed that the mid/high-end seems to be affected more than the sub frequencies.


So is there such a thing as THX Dolby Digital, THX DD+, THX DTS,...etc..?


How will I know when to put my receiver in THX mode when watching a Blu-ray, HD-DVD, DVD, etc...?
 

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Discussion Starter #7

Quote:
Originally Posted by JOHNnDENVER /forum/post/13002084


I use it often enough. It's nice to have the software to try and experiment with.


The OP would be surprised if he checked every title just how many do seem better with the THX modes.

I have watched a few movies calibrated at 75db's using both Dolby Digital and THX and actually, I found THX to be a bit lacking.


Now would THX give a more pleasing sound if I compared it against DD+ or any of the new formats?
 

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Quote:
Originally Posted by Garand Jinn /forum/post/13002202


Did not know this...it had always been my understanding that the movie soundtracks were mixed 'bright' because of the acoustic dynamics of the typical theater itself, and not the speakers.

Well that is WHY they are mixed bright



Here is Klipsch offering

http://www.klipsch.com/products/deta...specifications

frequency response 45Hz-19kHz ± 3dB, -10dB @ 32Hz

http://www.klipsch.com/products/deta...4-t-grand.aspx

40Hz-19kHz ± 3dB, -10dB @ 35Hz

http://www.klipsch.com/products/details/kpt-942-t.aspx

frequency response 45Hz-18kHz ± 3 dB, -10dB @ 32Hz

http://www.klipsch.com/products/deta...t-942-4-t.aspx

frequency response 43Hz-18kHz ± 3 dB, -10dB @ 26Hz


From JBL

http://www.jblpro.com/pages/cinema/5000.htm

Frequency Response: 45 Hz to 12.5 kHz (+/- 3 dB)

http://www.jblpro.com/pages/cinema/3000.htm

Frequency Response: 45 Hz to 12 kHz (+/- 3 dB)


mind you ALL these speakers are THX approved for cinema use
 

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Quote:
Originally Posted by bgarner /forum/post/13002257


I have watched a few movies calibrated at 75db's using both Dolby Digital and THX and actually, I found THX to be a bit lacking.


Now would THX give a more pleasing sound if I compared it against DD+ or any of the new formats?

Do it on every title, and I will bet you will find a few that actaully do realize improvement with THX.


I find it particularly useful when a particular title or content has harsh sounding dialog.
 
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