Nvidia GTX670, Onkyo PR5508, Panasonic AE8000U - HTPC blacks suck... - AVS | Home Theater Discussions And Reviews
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post #1 of 6 Old 04-22-2015, 07:18 PM - Thread Starter
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Question Nvidia GTX670, Onkyo PR5508, Panasonic AE8000U - HTPC blacks suck...

I have an Nvidia GTX670 card on my HTPC. I recently stumbled upon the 0-255 dynamic range toggle that is available on the newest Nvidia drivers and thought this fixed the problem.
Not really - with further use I figured out it just gets rid of all the black detail and makes the overall picture darker - it's not better, just darker.


PS3, PS4, Xbox360 - all look great as sources - my cheap sony bluray player too. My expensive HTPC - nope. Blacks are either washed out on the 16 to 235 setting, or too black on the 0-255 setting.


No video calibration done on the Panasonic AE8000. IMO it looks good out of the box on all my other sources - just not HTPC.


What am I doing wrong - I've struggled with this black level thing on my HTPC for years, through several decent video cards (460, 560), and through a couple different projectors Panasonic AX200U, Epson 8350.

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post #2 of 6 Old 04-22-2015, 08:50 PM
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Quote:
Originally Posted by Archaea View Post
I have an Nvidia GTX670 card on my HTPC. I recently stumbled upon the 0-255 dynamic range toggle that is available on the newest Nvidia drivers and thought this fixed the problem.
Not really - with further use I figured out it just gets rid of all the black detail and makes the overall picture darker - it's not better, just darker.


PS3, PS4, Xbox360 - all look great as sources - my cheap sony bluray player too. My expensive HTPC - nope. Blacks are either washed out on the 16 to 235 setting, or too black on the 0-255 setting.


No video calibration done on the Panasonic AE8000. IMO it looks good out of the box on all my other sources - just not HTPC.


What am I doing wrong - I've struggled with this black level thing on my HTPC for years, through several decent video cards (460, 560), and through a couple different projectors Panasonic AX200U, Epson 8350.
If you use the 0-255 setting on the HTPC, then you would have to set the AE8000 to accept the full range (HDMI Signal Level->Expand on AE4000, should be similar on AE8000).
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post #3 of 6 Old 04-22-2015, 09:23 PM - Thread Starter
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Thanks for the suggestion - though I tried that. I feel like that's a sum zero difference. My black levels go back to inferior when I try this combination, IMO.


0-255 on NVidia card
Expanded HDMI signal level on Panasonic.


I also set the Onkyo pre/pro to 'through' meaning it isn't supposed to be doing anything to the HDMI signal.


Looks pretty similar to 16-235 in Nvidia and normal HDMI signal level on Panasonic.


By the way, unless I choose full screen videos from the bottom drop down on the driver control panel - 0-255 with expanded looks really washed out on everything.
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Last edited by Archaea; 04-22-2015 at 09:31 PM.
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post #4 of 6 Old 04-23-2015, 12:20 AM
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I have an AMD setup, so I'm not that familiar with Nvidia, so hopefully someone who is will chime in. I'm not sure what the "digital vibrance" is doing. Also, you might want to show screen shots of the "adjust video color settings" and "adjust video image settings". I would also suggest trying to connect directly to the projector to rule out that the Onkyo is doing anything funny.
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post #5 of 6 Old 04-23-2015, 04:31 AM - Thread Starter
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All the color settings are default, including the digital vibrance setting. If you turn digital vibrance all the way down the colors all dissapear completely and you are left with black and white. I will try pc directly to projector. Good call there.
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post #6 of 6 Old 04-23-2015, 05:14 AM
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My GTX760 feeding my Panasonic plasma is set to YCbCr444 and full screen video.

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