Originally Posted by jszjsz
Hi all 4520 owners!
because the 4520 is going to be available in Germany next week and there's no much info about it in German, I place my questions here in this great US forum.
How exactly is the "Dialog Enhancer" working? As far as I have read the manual it loudens only the frequency band of human voice adjustable in three levels. Because most movies on the cable TV are only Dolby Digital stereo, I've got the following questions:
Is this only working on the center speaker?
Is this only working when the input is at least 5.1 or also when the 4520 extends a stereo signal to 5.1?
What's about "Dialog Enhancer" when only using stereo for output?
Many thanks in advance for all you help!
After reading your post again, I am not sure what you are asking me to test. When you say, "when the 4529 extends a stereo signal to 5.1", do you mean when a stereo input is set to Dolby PLII? I was able to find a cable channel that is broadcasting in Dolby Digital 2.0.0, which I guess is stereo. I can confirm that the dialog enhancer indeed works when the audio mode is set to PLII. Using a SPL, I measure about a 5-6 dB difference in the level of the dialog when switching the dialog enhancer from Off to High. I also confirmed that the dialog enhancer works when the output is Stereo. I don't know how to test whether it is only working on the center channel and not the other speakers--everything I listened to had the dialog in the center channel.
I know this isn't a very scientific test, and it may not even be what you are asking. If you want me to test anything else, let me know.
I can also say that I don't like the sound of dialog enhancer very well. IMO, it upsets the balance between the center channel and the left and right speakers that is set so nicely by a good Audyssey calibration. I know some people have issues with their center channel speakers, but I think other methods of addressing the issues should be taken (e.g. Get the center channel out of the cabinet and onto a free-standing center channel speaker stand) before resorting to dialog enhancer.