
Sony’s 46” KDL-46XBR4 LCDTV, one of 2007’s most eagerly awaited HDTVs, has finally arrived. It is Sony’s first 120Hz LCDTV, with “Full HD” 1920 x 1080 resolution. Sony used to make early review samples available to the press, but lately the company has been slow to release hot products to reviewers. The HD Guru™ obtained his test sample thanks to a local retailer’s generosity. The KDL-46XBR4 retails for $3599.99.
The 1080p XBR4 series (40”, 46” and 52”) represents the top-of the line in Sony’s vast array of LCD flat panel high definition televisions. The KDL-46XBR4 employs the “SPVA” (super patterned vertical alignment) LCD panel sourced through its partnership with Samsung. This technology claims both higher contrast and better viewing angles than delivered by any competing LCD panels.
Other features of the KDL-46XBR4 include a “floating” glass design (clear glass extending past the bezel), 10-bit LCD panel (to reduce dithering artifacts by creating more gradations between black and white), Motionflow™ 120Hz “full HD frame rate capability,” which creates interpolated intermediate frames between real frames of image information to reduce LCD “motion blur” (most LCDTVs are 60Hz, more on this later). Its WCG (Wide Color Gamut) CCFL (cold cathode fluorescent lamps) produces more color space than normal fluorescent (backlight) lamps used in many other LCDs, but less than the standard definition NTSC parameters.
While Sony does not provide numbers, Samsung does (remember: they co-own the LCD panel factory), indicating color space at 92% of the NTSC standard as opposed to the 72% reported by most other manufacturers using “regular” CCFLs. The KDL-46XBR4 also has x.v. Color™ technology for reproducing more color with future Playstation 3 games and possibly future HD DVDs and Blu-ray discs, but ultimately its ability to reproduce a fuller spectrum of color is restricted to the WCG CCFL’s limited capabilities.
In order to evaluate the Sony’s performance the HD Guru™ utilized a number of signals, including a new test for motion resolution. Let’s begin with deinterlacing performance.
All 1080i HD broadcasts (CBS, NBC, CW, HBO, Showtime, Discovery HD, HD Net and most of the other HD Networks) must be properly “deinterlaced” (with motion compensation) to 1080p on a frame-by-frame basis in order to properly retain all 1080 lines of resolution on a display. Some 1080p HDTVs “deinterlace” by discarding every other frame, meaning you will see just 50% of the resolution.
I quickly discovered that this Sony does not properly deinterlace 1080i in the factory default “Vivid” picture setting. In fact, it also drops 50% resolution in the “Standard” picture mode as well. However, the set does properly deinterlace the 1080i signal and does deliver all frames, and thus does display the full vertical resolution, in either “Custom” or “Cinema” picture mode!
Why did Sony choose to make the default mode one that fails to properly deinterlace incoming 1080i signals? I haven’t the faintest idea, especially since, according to a number of set makers, the majority of HDTV buyers leave the user settings in the factory default!
If you pick up just one tip from this website, it should be to change your HDTV out of its “showroom default” setting (which may be called “Dynamic” or some other variation) as soon as it is unpacked and connected. The preferred picture setting on most brands will be called “Cinema,” or “Custom,” or “Pro,” or some variation of those. Check your owner’s manual for the choices.
When you select whatever the “advanced” setting is called, it will always deliver a better image under home lighting conditions than the factory default setting, which is intended only for brightly (over)lit dealer showrooms.
The 3:2 cadence test determines if the set’s video processor properly identifies film-based 24fps content and converts it to 60fps (in this and in most 120Hz sets the processor then interpolates and creates an intermediary frame to produce double the frame rate).
This Sony, like most of the 75 2007 models the HD Guru™ tested this year, failed the 3:2 cadence test. Failure results in degraded resolution and/or visible artifacts. Unlike the de-interlace test, where switching picture modes affected the result, the KDL-46XBR4 failed to identify and convert 24fps film-based signal in all picture modes. Silicon Optix’s HQV HD test disc (Blu-ray edition) provided both 3:2 cadence and 1080i de-interlace tests).
Measuring a set’s bandwidth determines its ability to pass the HDTV video signal’s full frequency range. If it is attenuated (reduced), you will not see the finest horizontal resolution detail, or the full 1920 pixels, despite the display’s claimed full resolution. The KDL-46XBR4 passed the entire one pixel on/off signal using a Sencore 403 signal generator. To view every pixel as it is generated, requires changing the user menu “Screen” setting to “Full Pixel” from the “Normal” factory default that produces “overscan” and cuts off around 5% of the total image.
Though the “Normal” factory default only outputs around 1830 out of 1920 pixels, it is set that way to mask artifacts present in HDTV broadcast signals that sometimes produces distracting lines and noise that may otherwise appear at the sides, or top of the screen. However, switching to “Full Pixel” mode is necessary to get full pixel resolution from HD DVD and Blu-ray signals. Just remember to switch back when watching broadcast HDTV.
The latest tests in the HDTV Guru’s arsenal, static and motion resolution measurements are derived from a new 1080i Blu-ray test disc called “FPD Benchmark Software for (the) Professional.” A frame called a “Monoscope Test,” consisting of four groupings of four non-parallel black lines arrayed to form a wedge-shaped patterns (see photo below) that appear at the top, sides and bottom of a center square. To test resolution, you look at the bottom wedge. There are both stationary and moving versions of the test.

The stationary test is for “static” resolution, determined by the point where the lines are no longer seen as separate, and begin to blur together. Numbers adjacent to the wedges help make what is a subjective test, somewhat easier to determine and more reliable. The moving “Monoscope Test” pattern provides the means to measure motion resolution.
As with the de-interlacing test, static and moving resolution results were picture mode dependent. “Custom” and “Cinema” modes produced 1080 “lines” of static resolution and 600 lines of motion resolution. “Standard” mode produced1080/580 static/motion and “Vivid,” the factory default produced a disappointing, but not surprising 880/450 static/motion. This is yet another reason to get this set out of the “Vivid” mode.
The KDL-46XBR4’s maximum 600-line motion resolution performance tied that of a recently tested Sharp 120Hz LCD panel, making these two the highest measuring motion resolution LCD panels to date. Yet both fall short when compared to the best-measured plasma performance (880 lines) or LCOS microdisplay (780 lines).
Color bar observations indicated that primary and secondary colors were rendered quite realistically, with the exception of red, which tended toward an orange-red, possibly the result of a WCG-CCFL backlight limitation.
The HD Guru™ believes there are more user accessible picture controls and settings within this TV than in any other HDTV he’s tested. Too much of a good thing results in a ridiculous and confusing situation whereby some controls don’t appear to produce any visible change, and exactly what they are supposed to do is left unclear because the owner’s manual’s documentation of many of these so-called “features” is so vaguely written, they are rendered meaningless. For instance: here’s a short quote regarding the “Motion Enhancer” feature:
“Activates MotionFlow to enhance the smoothness of picture movement and reduce blur.
High Provides smoother picture movement such as for film based content.
Standard Provides smooth picture movement. Use this for standard use
Off Use this setting when High and Standard setting results in noise.
Depending on the video, you may not see the effect visually, even if you changed the setting.”
They got the last part right. I saw no difference visually, mentally, physically or any other way. Ditto for the MPEG noise reduction feature.
After a careful adjustment of the user controls, the HD Guru™ evaluated picture performance using satellite HD and Blu-ray disc content (sorry no SD sources were available, though Sony’s DRC in the past has done a reasonable job of upconverting standard def content and the KDL-46XBR4 uses the latest version).
Bottom line, this Sony, properly adjusted, produced the best LCD flat panel HD image the HD Guru™ has seen to date. A number of factors are responsible. This panel creates some of the deepest blacks and the best contrast ratio seen on an LCD display. The Samsung/Sony SPVA LCD panel it uses, is, in the HD Guru™’s opinion, is the best LCD panel in the industry. Within the LCD category, the HD Guru™ awards the KDL-46XBR4 ♥♥♥♥.
However, compared to other flat panel HDTVs, regardless of technology, the rating drops down to ♥♥♥, simply because the best plasma TVs produce better images, with better reds, wider viewing angles, and significantly better motion detail and usually for less money!
So why are consumers passing on better performing plasma TVs and spending more money (per inch screen size) for poorer performing large screen LCDs? Because they produce brighter pictures and consumers mistakenly believe “brighter is better.” However, unless one lives in a retail showroom or has set up an ultra-bright, high ambient light viewing environment that mimics a showroom, the HD Guru™ cannot understand why anyone would pay more to buy a top-rated LCD set when a less expensive top-rated plasma set will outperform it while still providing up to three times more light output than necessary in any typical home environment.
Copyright ©2007 Gary Merson/HD Guru™. All rights reserved. The content and photos within may not be distributed electronically or copied mechanically without specific written permission.
etype2
Posted on 20th August, 2007
But you would rather your readers put up with the burn in problem on plasmas you were so obviously concerned about in your article about black stripes on DirectTv receivers.You say it’s not much of a problem anymore? Just like you don’t say that the OLD problems with LCD is not a problem any more. Never mine the fact that many people report buzzing sounds from their plasma in high altitudes. Never mind the fact that some plasmas still leak. This reader has first hand experience. Never mind the fact that plasmas are generally more expensive then lcd’s,consume more power,heavier,more fragile and only perform better in low light conditions. Never mine that manufactures have dropped plasmas from their lineup.
You keep talking about degradation on viewing angles. In the real world,I simply don’t see it. My set is only rated for 160 degree viewing angle. The latest sets have 178 degree viewing angle. The motion blur,again I don’t see it. Maybe I’m not as sophisticated as you or don’t have a trained eye. I simply don’t see motion blur.
Many plasma’s have reflective glass screens which causes havoc with viewing in real world conditions. I never hear you talking about that.
If LCD’s are inferior,why did the motion picture academy award Sharp Aquos with a academy award for superior technology? Why is NBC using a Sharp Aquos 65 inch LCD in their Today Television broadcasts? Why during last years academy awards show were their two Sharp Aqous 65 inch LCD’s flanking the stage? Why is CNN using LCD in their broadcasts? NBC Sunday Night football uses large screen LCD’s in portrait mode,admittedly secondary to 103 inch Panasonic plasma.
I travel the world,in most hotel rooms,you will find LCD.
Plasma’s only have slightly better blacks and contrast ratio. LCD’s will soon surpass with new technology such as local dimming led back lighting. Home Theater magazine just tested the latest generation Sharp Aqous 52 inch panel and reports deeper blacks then most plasma’s they tested.
I’m tired of LCD’s getting a bad rap. You are obviously slanted to plasma and you keep reporting on old LCD problems which have been overcome. Plasma was first out the gate,but now LCD has overtaken and the sales figures bear that out world wide. It is not just me.
Plasma is old technology,fighting to compete with LCD.
The best news of all? OLED will eventually overtake LCD and plasma.
After this,you will probably ban me. Readers,I have been involved with consumer electronics since the 1950’s when I built crystal radios and helped “wire” my old neighborhood with intercoms. I have owned most of all the older technologies leading up today’s products.
Juan De Fenceopper
Posted on 21st August, 2007
Critique.
You did not seem to test the 120 hz in motion testing very much…where this should have been the main part of the test.
Its good to know that Custom enables more features…thanks for that…the most important thing in this review.
I understand you need to write this for newbie users, but most people understand how to tweak settings. Many of those settings are for sub par signals.
You did not seem to test the TV on sports broadcasts…a major failure.
You did not seem to watch a blue ray movie and comment on what you saw.
I come away not convinced you tested the 24fps features.
Each feature has a help feature on the TV…who needs the manual. Most these things you tweak out.
Since most people use standard as you say…it makes sense to have that feature avoid side of screen artifacts at all costs. Anyone understanding them….will also understand how to tweak their own settings….hence they use custom.
Plamas are fragile…can have burn in…which will cause major family strife if Junior kills Dads TV with his Wii. Plasma are reflective and suck in the majority of living rooms during the day.
If you have a walled off dark room for movies fine….but most people enjoy watching TV during the day too.
Bottomline….talk much more about tests that people can see on their own sets. Comment on HD sources like the Tonight Show…which everyone gets….watch some sports and comment.
Watch a specific movie and comment.
Right now the 300 is like the offical DVD tester of choice. To a lesser degree the last Bond movie.
Thank you for the review….it was useful
RUSTY PELICAN
Posted on 22nd August, 2007
I’ve appreciated your reviews for several years now [Digital TV and Sound Mag. etc], and am very familiar with pro/cons of both LCDs and plasmas, and the fact that over 80% of all TV displays are released to the marketplace without superior video processing chips that can “pass” the film-signal 1080i deinterlacing tests [although most pass the video-signal tests].
It frustrates me that these major electronic companies will charge a premium for their technology [although prices are finally moving down in some areas], yet fail to include the quality processing chips, like the HQV chip, and others from Broadcom, Faroudja etc.
In fact, Panasonic, Sony, Sharp, Samsung, etc never ever mention in promotional material the name of their processing chips! Yes, their sets provide a generally good picture, but it still comes up short of “FULLY PROCESSED” (and accurate) HDTV.
As far as I know, the only manufacture that consistently provides quality displays, with video processing that “passes” the deinterlacing and scaling tests, is PIONEER (plasma), but who else?
I’m keeping my eye on the forthcoming JVC premium 888 series 120hz LCDs (arriving next month), as I believe JVC is the only company using a 32-bit chip for processing(?), and their displays have always looked excellent in store displays [very good image quality]. Perhaps you can review one of the new sets.
I appreciate plasma quality, but I can live with less black level quality of an LCD if it also can provide accurate and fully processing of the 1080i HD signals, from HD DVD, Blu-ray, upconverted DVD, cable/satellite boxes etc.
The HD Guru’s alter ego Gary Merson has tested 74 2007 HDTVs for deinterlacing and accurate 3:2 pulldown. This is the largest test ever conducted by a reviewer. More will be revealed in an post later this week.
The HD Guru
Peter
Posted on 1st September, 2007
Hi,
I was in Circuit City and was very impressed on the whole by the 46XBR4, bnut I do have two questions that I hope you can answer ASAP because I am thinking about getting it or the Sony 46W3000 this Labor Day weekend. The W3000 is being reduced for the Labor Day holiday from $2999 to $2599, and the XBR4 from $3599 to $3230.
The store was using the Fantastic Four Blu-ray disc and it looked excellent, except the salesperson (who doesn’t work on commidsion, it seems) siad he and other staff, and some customers have noticed a possible motion glith caused by the 120. He said sometimes in a quick moment a character will by moving quicker or slightly slower than norman. He said they have only noticed it on the 46BRX2, and the cause is the Motionflow 120Hz. Have you see that?
2. After watching the screen from a distance of about 9 feet or so for about 20 minutes, I noticed I felt a slight bit of a headache. Has anyone else devloped a headache from an LCD screen like that? I hope that’s not the case.
Currently, I have an Optoma HD72 projector and I love the huge image, but I do worry about the lamp burning out, and I miss the inner brightness of the screen from my regular TV. Plus the room has to be totally dark to get the full benefit of the HD72.
Many movies are filmed at 24 frames per second (fps) and prime time TV programs are recorded at 24p. Seizing on an opportunity, some studios are taking a purist approach and encoding high definition video content such as Blu-ray Disc™ in 24p. Sony wisely takes advantage of this by including 24p output capability on our Blu-ray Disc™ players as well as including 24p input capability select 2007 BRAVIA TVs. The benefit? Images are smooth and natural looking. Once you experience 24p video it will be hard to view video without it.
What would you advise?
Re-evaluate the sets out of the factory default mode picture “Vivid” and into cinema or custom mode and adjust the user controls till dark areas are not below black (brightness) and light areas are not pushed into white (contrast+ backlight). According to a seminar I attended the other day in Berlin Germany by Philips. if you input 24 hertz to an LCD and it has 5-5 pulldown (repeats the frame five times in US) you will eliminate judder (herky jerky side motion in pans) but loes the faster response time of Motion flow, thereby seeing “motion blur” in fast scenes. Perhaps the motion flow contol at the current circuits settings you have it at does not provide a smooth flow .
The HD Guru
Al McInnis
Posted on 5th September, 2007
HD Guru. I have been looking at buying a 50+ flat panel TV for some time, and have narrowed it down to:
Panasonic TH-50PZ700U
Sony KDL-52XBR4
I have heard all the relative scare stories
Sony LCD Backers
- Plasmas will burn in when you are watching sports with the scores and tickers
- Plasmas are too reflective when placed in your family room
- Not bright enough
Panasonic Plasma Backers
- Poor black/color reproduction
- Poor handling of fast action sports (Hockey, Baseball, Tennis…)
- Poor viewing at angles….
Yesterday I had the chance to view side by side. I was watching US Open tennis both in SD and HD.
- The Sony was brighter, and the purple-blue US Open background was BRIGHTER (maybe more pleasant) but less realistic color when compared the Panasonic. The tennis balls didn’t significantly (I couldn’t see any diff) produce more trail or blur on the Sony versus the Panasonic.
- In the store setting the Panasonic didn’t have too much trouble with reflection.
I am purchasing the TV for a family room, that is moderately bright during the day (my current 36″ SD CRT has some trouble with reflection). We will of course watch as much HD content as possible. Currently we watch your standard TV programs most of the time, and 1 or 2 DVD Movies a week….
My 9 year old also plays some GameCube (soon to be Wii) games.
Given our viewing habits, and the general family room location would the Plasma still be the better choice? The price difference and better blacks\colors are hard to dismiss. My wife does like the overall look of the XBR4 more (even when turned off….)
Your opinion would be very much appreciated. Thanks,
Eric
Posted on 1st January, 2008
Mike, personally I would save the $300. There are some simple things you can do yourself that will likely yield the same or better results than what BB or CC could do.
First, as HDGuru noted in his initial review I’d make your picture setting changes in either the Cinema or Custom mode, so flip to one of these before doing anything. [Also, keep in mind you'll need to change your new settings for each input you use e.g. HDMI 1, Component 1, etc.]
Second, find a DVD that has a THX video optimizer. All of the recent Disney-Pixar movies (e.g. Cars) have one under Setup in the disc’s main menu. I think all THX-certified DVD’s have the optimizer. This has a really simple user interface that walks you through 5-6 screens to adjust brightness, contrast, color levels, etc. Here’s a CNET article on the optimizer http://www.cnet.com.au/dvdpvr/dvdrecorders/0,239035839,240056302,00.htm. There are more advanced tools out there but this has worked really well for me – its free and it only takes 5-10 minutes.
Third, take a look at my posting from this morning, 1/1/08, above. These are the settings I’ve settled on AFTER going through the THX Optimizer and based on my own personal preferences for color/tonality, brightness, etc.
I honestly don’t think you’ll get more than this from BB or CC. Their technicians will likely use a similar tool but they won’t be as familiar with this particular TV. I have spent hours (my wife would say days) over the last three months fine-tuning settings and viewing various different reference material and i’m very pleased with my 46XBR4.
Best of luck! P.S. When I say “save” the $300 I really mean invest it in a Blu-Ray player instead
. Feel free to write back with questions.
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