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JVC Procision LT-47X899 LCD HDTV Review - Performance: Summary

By Richard Baguley
Published on September 06, 2008
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Intro	Tour & Design
Performance: Summary	Performance: Blacks & Whites
Performance: Color	Performance: Motion
Performance: Viewing Effects	Remote
Audio	Connectivity
Controls & Menus	Formats & Media
Power Consumption	Value & Comparisons
Conclusion	Ratings & Specs

Overall, the LT-47X899 had only lackluster performance; although it was pretty bright and had decent blacks, the colors were poor and we saw some issues with how it presented colors. It also did a reasonable job of scaling lower resolution images up to fit the 1080p resolution, and didn't show reflections much. Motion also looked good; we saw smooth, clean motion in our tests, thanks to the 120Hz processing that it uses. But the viewing angle was disappointing; the contrast ratio of the display fell off rather quickly, making this display not so suitable for large groups of viewers.

Calibration
To get the best out of a display, it has to be calibrated, a process that finds the correct settings for the individual display. We use the DisplayMate calibration process to set the display up correctly; the calibrated settings that we found to give the best overall performance are listed below. To save space, we only list the controls that have been changed from their default settings.

Setting	Default (standard mode)	Calibrated (custom mode)
Picture	0	-4
Bright	0	+2
Energy Saver mode	0	+30
x.v.Color	Auto	Off
Color Temperature	Warm	Low
R Axis (high)	0	-3
R Axis (low)	0	-7

Basically, our calibrated settings were pretty close to the defaults; we didn't have to tweak much to make it fit with our standard set of calibrated settings. The only thing we had to do was to tweak the red color axis control to get the HDTV closer to our desired color temperature setting of 6500k.

Video Modes
The LT-47X899 has 6 video modes, which are detailed below

Mode	What it Does
Standard	The default setting. The backlight is turned down and most of the controls are set at mid-range.
Dynamic	Boosts color and screen brightness. Uses a light sensor on the front to control the backlight level.
Theater	Turns down screen brightness and enables the Theater Pro II controls, that allow for tweaking of sharpness and color axis management.
Game	Boosts the brightness and picture control for more vivid color.
Memory 1 & Memory 2	Two user-defined set of control settings. Remembers tint, color, picture, brightness, detail and energy saver mode.

Each of these modes can be customized; if you prefer your Theater preset to have more backlighting, the display will remember if you change the default setting.

Dot Pattern
Built around a 47-inch LCD screen, the LT-47X899 has a resolution of 1920 x 1080 pixels, which means it can accurately represent every single pixel of a 1080p signal. We look at the dot pattern of the screen using a microscope. The photo on the right (taken at a 20x setting with a microscope), shows the dot pattern of the display, with the familiar grouping of red, green and blue elements. The LT-47X899 has the same angled-V shaped elements as the Vizio VO47LF, with each group of three elements forming a single pixel.

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