Panny Troubles, D/A Conversion, LED Illumination

WTF?
I just bought a Panasonic TC-P58V10 plasma to replace a Panasonic TH-42PA20 that I've had for about six years. I was expecting an even better, crisper picture with more detail, but it's not even close to being as sharp and detailed as my old TV! Both DirecTV HD and my library of more than 600 DVDs look awful in comparison. What's wrong?

Randy DeMarco

I'm astonished that the P58V10 looks so much worse than the 42PA20, especially on HD material. The old set had a resolution of 858x480, whereas the new one is 1920x1080. The increase in resolution should easily compensate for the bigger screen size when viewing HD content.

I'm not as surprised that DVDs might not look that great—the old set was displaying them at their native resolution, and it was fairly small, so depending on your viewing distance, it probably looked quite sharp. By contrast, the new set must upscale standard-def material, which can add visible artifacts that are more visible on larger screens.

In his review of the TC-P58V10, Tom Norton liked it quite a bit, but he did note some less-than-stellar performance on standard-def material: "The Panasonic had some difficulties with SD sources. It failed our most challenging 2:2 and 3:2 pulldown tests. Again, this didn’t produce excessive artifacts on normal program material, but the set’s 480i-to-1080p upconversion did produce a slightly soft image. While the set handled 480i sources adequately, if you can convert them to 1080p before sending them to the set (as with an upconverting DVD or Blu-ray player), you might get better results if the external device has better video processing." Still, he thought the set's HD performance was fine, and in the end, he gave it a Top Pick designation.

Perhaps you got a faulty unit. Have you tried to exchange it? Alternatively, try using an upconverting DVD or Blu-ray player to see if that works better; set the player to send 1080p from its HDMI output to bypass the TV's internal scaler. I recommend transitioning to Blu-ray anyway, and I'd be curious to see how that format looks on the new set—I'd be shocked if it looks less than spectacular. Finally, you could try an external scaler, such as the DVDO Edge, which does a great job upscaling standard-def material.

Creature Feature
We have an LG 47-inch LCD TV, and we want to connect my modest "computer" speakers—JBL Creature IIs. However, the LG only has digital audio out, no RCAs. We are not about to buy a dedicated receiver for our bedroom, so is there a conversion accessory to get the audio to the Creatures without spending a bundle?

Vern Sherman

Happily, there are many such inexpensive accessories. For example, the Gefen TV Digital to Analog Audio Converter will do the trick for well under $100. If the TV outputs a Dolby Digital bitstream, you want the Gefen TV Digital Audio Decoder, which can accept Dolby Digital (up to 5.1 channels) or uncompressed 2-channel digital audio and convert it to 2-channel analog audio from RCA outputs. It's a bit more expensive at around $100, but that's still not nearly as much as a receiver.

Back From the Edge
I was wondering if you've been able to review some of the newer edge-lit LED LCD TV's and compare their performance to sets like the LED-backlit B8500 series from Samsung. I'd like to upgrade my TV to an LED LCD, and the edge-lit models are easier to find and afford.

Toshiro Shoda

We have reviewed quite a few edge-lit LED LCD TVs along with LED-backlit models; click here for all of HT's flat-panel TV reviews. In general, manufacturers are placing more emphasis on edge-lit models because they can be thinner and less expensive than backlit designs. However, edge-lit LED LCDs can't usually produce black levels as low as backlit sets, and their black-field uniformity isn't as good—for example, shots in outer space don't look as evenly black. Then there's local dimming, which allows LED-backlit sets to exhibit much greater contrast, though it can also produce halos around tiny bright objects on an otherwise dark background, such as stars in space.

The Samsung B8500 is a great LED-backlit set, but it's very expensive and getting hard to find as a 2009 model. Another option is the LG LE8500 LED-backlit LCD TV, which is a 2010 model and more affordable. It provides great blacks and the best off-axis picture quality I've ever seen in an LCD TV.

If you have a home-theater question, please send it to scott.wilkinson@sorc.com.

COMMENTS
jason's picture

Reference Panasonic TC-P58V10:I just bought a 42 LG lcd, and was faced with a similar situation...My DVD player is old and only ouputs Component 480i/480p...I was expecting the worst...At 480i the picture was exactly as Randy DeMarco described: very soft, with poor faded colors...At 480p, however, the picture was superb: crystal clear with vibrant colors...Problem solved...

Tyler's picture

Randy, if you just plopped the new TV into place without changing anything, I wouldn't be that surprised with your results. Are you sure you adjusted your source devices to display 1080p rather than 480p?

Jarod's picture

Randy, I would also recommend to make sure that you are using the THX picture setting. What picture setting did you use on your old set? If it was vivid or game, your eyes may be use to an ultra bright picture. I would make sure you are on the THX picture setting and give it a chance. After an hour or so of viewing you will love what you see! To get the most out of your plasma, viewing at night or in a darkened room with make the set come to life.

DocuMaker's picture

The Panasonics clearly have inferior processing. Too bad most reviewers gloss over this weakness with the Panasonics. I guess they assume that people do nothing but watch pristine 1080p Blu rays in darkened rooms 24/7/365, like in their reviews. They overlook the fact that many people spend a significant portion of their week watching SDTV/HDTV. I happen to have a Panny 58V10 (2/10 build) in my living room right now, next to my Pio KRP-500M. I have also recently had 2 Sammy B860s, and a Sammy B8500 LED in my living room. I use an HDMI splitter so I can watch content on both simultaneously. Samsung clearly has the best SD processing, surpassing the Kuro. The scaling on the Kuro is nice, but it has a real problem with separation error, and the Samsung is better at minimizing flickering/jaggies. The Panasonic is the real laggard of the bunch, trailing behind even 2008 Pioneer processing. A while back Sammy boasted of the billions of $ they spent on improving their processing. It shows.

Tom Norton's picture

While Panasonic hasn't been a leader with respect to its video processing, this should not be the source of your problems, particularly if you choose your upconversions wisely. And other options are usually available (performing the upconversion in an AV receiver or disc player, for example). In all other respects we have never tested a Panasonic plasma offering less than solid performance. Scott's comments about proper setup are well taken. Since we have no way of knowing what settings you are using, it's hard to make any sort of analysis. If the set is properly adjusted, and your sources are up to speed (even standard def DVDs) it's hard to imagine that the image could look "awful." Apart from dark scenes as viewed on some sets (NOT on newer Panasonics) , I would not use that word to describe any set we've tested in the past few years, and certainly not on Panasonics. If all else fails, the possibility remains of a defective set. In that case, an appointment with

tom Norton's picture

(cont.)If all else fails, the possibility remains of a defective set. In that case, an appointment with your dealer should be your next step.There is another possibility as well. The bigger the image, the worse a DVD can look. You can expect a slightly softer-looking image from DVDs on a 58-inch set vs your prior 42-incher.But that doesn't answer the question of HD from your DirecTV box. Not being a DirecTV devotee (I'm fortunate in that my Charter cable provides a superb HD picture--though not enough HD channels!) I can't say for certain that DirecTV itself might be an issue. But be certain that your DirecTV box is set to output its highest available resolution (probably 1080i). Don't laugh. I once visited friends who were watching DirecTV on their new 720p set with the cable box set to output 480i! Your old plasma was an EDTV limited to 480p, so it's possible that your box may still he set to output either 480i or 480p, even on HD channels.

RHAllen's picture

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