1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

do all receivers have same PQ?

Discussion in 'DIRECTV HD DVR/Receiver Discussion' started by kenlani, Jun 9, 2010.

  1. dpeters11

    dpeters11 Hall Of Fame

    16,345
    503
    May 30, 2007
    Cincinnati
    The HR24-500 uses a different color space. As for the H20, while I was glad to get rid of it due to its limitations, PQ on HD was never an issue.
     
  2. Rich

    Rich DBSTalk Club DBSTalk Club

    28,333
    658
    Feb 22, 2007
    Piscataway, NJ
    There is a difference in PQ between the 24-500 and the 24-100. The 100 is a bit sharper if you know where to look to make the comparison. There seems to be a noise difference too. My 100s are noisier than my 500s. Very noticeable in a quiet room while reading.

    Rich
     
  3. BrucePadgett

    BrucePadgett AllStar

    85
    0
    Nov 14, 2007
    Just to clarify, my H20 is getting signals from a SD-only dish. My only point of comparison is with my first-gen Sony receiver, which exhibited better PQ on standard def programming. For that matter, the sound quality was also better on the Sony. And I do realize the entire matter will be moot once I have an HD antenna installed. And, the connecting cables are exactly where they have always been, it's just a straight receiver swap-out.

    I just cannot figure out the technical reason why I am getting these results.
     
  4. west99999

    west99999 Icon

    1,396
    49
    May 11, 2007
    Maybe its because your tv is so old it has lost some of its "glamour".
     
  5. Laxguy

    Laxguy Honi Soit Qui Mal Y Pense.

    15,399
    585
    Dec 2, 2010
    Winters,...
    True calibration takes into account the source. If you're happy with what you have, it's no matter.
     
  6. Jason Whiddon

    Jason Whiddon Hall Of Fame

    2,321
    34
    Aug 17, 2006
    The problem is when they went with NXP instead of broadcom in the one model and used RGB 444 instead of ycbcr 444. Many displays/avr's dont play well with RGB, or require the proper settings. Also, if you calibrate for RGB, it wont look right (most of the time) for ycbcr. I calibrated my VT50 to RGB and the brightness setting was all wrong for ycbcr. Thats the one thing I hate about Roku, they continue to output RGB.

    As far as display calibration, I calibrate my own with an Oppo 103, D3 Pro and Chromapure. I either do it to ycbcr 422 or 444, depending on the display, and leave it alone. Im not going to sit around and eyeball for a DVR, plus the fact HD content on Directv and Dish is whacked half the time anyways.
     
  7. slice1900

    slice1900 Well-Known Member

    7,616
    776
    Feb 14, 2013
    Iowa
    I'm sure the Sony receiver used better quality components for its SD output, which was its sole output, than the H20 which was designed for HD with SD really considered more of a backup output that they didn't want to spend much money on. Directv would have assumed they'd be providing SD receivers for customers with SD TVs, and presumably would invest more in SD output quality there than they would for their HD receivers.

    If you were going to continue using SD for a while you might want to consider getting an SD receiver (D1x) I don't know for sure but I'd imagine it produced better quality SD output than the H20. Probably not as good as that old Sony though. I'd imagine those cost a lot of money back in the day and they could afford to use some fairly high quality parts.

    But since you said you're going to be upgrading to HD soon, sticking with the H20 is probably for the best as the poor SD picture quality may push you towards upgrading to HD more quickly....your eyes will thank you! :)
     
  8. BrucePadgett

    BrucePadgett AllStar

    85
    0
    Nov 14, 2007
    AllStar, I believe you hit the nail on the head. That Sony cost me $800 (plus $200 for installation), and really is quite solidly built. The only problem I ever had was with the program guide, which started out fine, but after a year became nearly useless. Also, the tech department at DirecTV concurs with what you said about standalone standard def receivers having better SD PQ than the HDTV ones.

    Given all this, it is pointless to swap out my superior Sony SD receiver for an inferior version. I can only hope that at least some quality HDTV parts were used for the H20.

    Sony SAT-A1
    January 1996 - June 2013

    RIP
     
  9. Laxguy

    Laxguy Honi Soit Qui Mal Y Pense.

    15,399
    585
    Dec 2, 2010
    Winters,...
    With serviceable HD sets at under $200, you might do yourself a big favor and spring for one, and enjoy some HQ programming.
     
  10. cypherx

    cypherx Hall Of Fame

    3,472
    68
    Aug 27, 2010
    PA - Berks...
    I was going to say maybe during the Sony's lifetime it was an era where DirecTV didn't compress SD channels to hell and highwater. They are cramming so much SD per transponder now that it really took a huge quality hit. My local cable provider's ClearQAM SD channels look like progressive DVD quality to me. Difference is depending on the QAM channel, it could be anywhere from 8 to 10 channels sharing the 38.8mbps pipe. That gives a good amount of bandwidth even at constant bit rates. DirecTV likely crams more like 16 or so MPEG2. If they went to MPEG4 for SD, the quality would improve.

    But then again I see your post you said Sony SAT-A1 till June 2013... so it has seen its fair share of overcompressed transponders.

    Now I guess some SD had S-Video and some didn't. That could attribute as well.

    But going forward, HD is where it's at. When you get the HD antenna you will be pleasantly surprised.
     
  11. BrucePadgett

    BrucePadgett AllStar

    85
    0
    Nov 14, 2007
    Most certainly overcompression of the SD channels is the main factor in how crappy these signals look. Perhaps the H20 is simply demonstrating this. I have lately begun to notice that the premium channels are being passed through with quality nearly equal to my old Sony. Conversely, the DSNs, always victimized by low bit-rates, look worse than ever.

    The sound quality is not there, however, in comparison. I trust the HD channels will do better in this regard.

    BTW I have a Sony 32EX400 in a still-sealed box. Catastrophic family illness has taken up all my time for several years now. Seriously, if DirecTV hadn't forced my hand, I wouldn't be writing this now. It was a welcome distraction, actually.

    Thanks to all for your time and input.
     

Share This Page