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JVC HD-S998 review: JVC HD-S998

Although it had a hard time keeping a straight line, the JVC HD-58S998 gives solid picture quality from an ultraslim cabinet.

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David Katzmaier
David_Katzmaier.jpg

David Katzmaier

Editorial Director -- TVs and streaming

David has reviewed TVs, streaming services, streaming devices and home entertainment gear at CNET since 2002. He is an ISF certified, NIST trained calibrator and developed CNET's TV test procedure himself. Previously David wrote reviews and features for Sound & Vision magazine and eTown.com. He is known to two people on Twitter as "The Cormac McCarthy of consumer electronics."

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It doesn't take a genius to realize that, all things considered, most TV shoppers would rather have a flat-panel television than one that takes up more than a few inches in the depth dimension. That simple fact will probably lead to the eventual extinction of rear-projection HDTVs, but for now big-screen flat-panel televisions still cost a few hundred dollars more--at least--than an RPTV of the same size. And rear-projection TVs aren't going down without a fight.

7.2

JVC HD-S998

The Good

The JVC HD-58S998 rear-projection HDTV has a beautiful design that includes an extra-slim bezel and a 10-inch-deep cabinet; produces a deep shade of black; relatively accurate initial color temperature.

The Bad

Geometry issues cause bent horizontal lines; inaccurate primary color of green; computer input only goes up to 1,024x768 resolution; no true independent input memories.

The Bottom Line

Although it had a hard time keeping a straight line, the JVC HD-58S998 gives solid picture quality from an ultraslim cabinet.
JVC HD-58S998

JVC, Samsung, and Sony have all announced slimmer versions of their big-screen projection sets for 2007, and JVC's 58-inch HD-58S998 is the skinniest of the bunch. It's kind of amazing to see this rear-projection set from the side and realize there's a lamp and a mirror and all of the other projection accoutrements packed into its 10.75-inch-deep cabinet. Engineering prowess aside, however, the real proof is in the picture, and the HD-58S998 demands a sacrifice for that small depth. It has a hard time maintaining a straight horizontal line across the screen; the left side--and to a lesser extent, the right--bow upward an unacceptable amount, which becomes especially obvious when the set displays program grids, tickers, or other graphic elements. The JVC HD-58S998 gets a lot of other picture quality aspects right, and its styling is among the best we've ever seen, but the crooked picture spoils its chances against the toughest competition.

Design
From the front, the JVC HD-58S998 looks like a typically sleek, modern-day HDTV, and in fact it's one of the most attractive examples we've seen yet. We love that the bezel along the top and sides of the screen's edge measures a mere 1/3 of an inch wide (!), even thinner than that of the former thin-bezel champ, Mitsubishi's WD-65831. That sliver of a bezel allows this 58-inch set to occupy just 51.5 inches of width. As is par for the RPTV course, the area below the screen is significantly chunkier and glossy black, interrupted only by a big JVC logo and a cool-looking power indicator that can be disabled--a boon for home theater fanatics who demand a minimum of superfluous illumination. All told, the HD-58S998 is probably as compact as any 58-inch RPTV could be, measuring 51.5x37.9x10.8 inches, and weighing a feathery 115 pounds.


The HD-58S998 measures just 10.75 inches deep.

From the side, the HD-58S998 looks more like a flat-panel TV than a rear-projection set. JVC sells a wall-mount kit for this TV, model TS-CP01WG ($399 MSRP). You can also choose a matching, 16-inch-deep stand, the RK-CSLM8 ($329), which is designed to take full advantage of the set's slim profile. In another move designed to allow users to slide the HD-58S998 directly up against a wall, all of the "rear" input jacks are instead located in a recessed bay on the TV's right side. Access to the lamp is likewise available on the left side.

JVC has a new remote this year, and we liked the redesign for the most part. There's plenty of room on the large wand, the button groups all seem logical, and the presence of direct-access keys for the five inputs is a big improvement over last year's design, which forced you to cycle one-by-one through the inputs. We also liked the full backlighting, which is becoming uncommon even among high-end TVs as manufacturers look for cost corners to cut. Our biggest gripe is the ease with which we confused the inner ring of buttons around the main OK key that control cursor movements with the buttons in the outer ring, which include Menu and Aspect keys. The remote can command up to five other pieces of gear.

The only fly in the HD-58S998's otherwise delicious design soup is JVC's menu system. It's the same one we've been complaining about for years, with page after page of scrolling through dot-matrix-style text that lacks any contextual explanations. Maybe the company will get around to updating it next year.

JVC also sells a 65-inch version, the HD-65S998.

Features
A native resolution of 1,920x1,080 pixels--aka 1080p--kicks off the HD-58S998's feature set. All those pixels allow its LCoS chips to resolve every detail of 1080i and 1080p sources.

JVC offers a somewhat disappointing selection of picture tweaks for this level of HDTV. First off, while there are four different picture modes, each of which is fully adjustable, they're only independent for the two HDMI inputs. The picture settings on all of the other inputs are shared across those four modes; for example, your setting for brightness in the Theater mode for component input 1 has to be the same for component video 2. This arrangement limits your ability to customize the image somewhat, but it should only affect hard-core picture adjusters.

A smattering of extra adjustments joins the usual contrast and brightness controls. There are just two choices for color temperature--Low and High, with Low coming closest to the standard--and there's no way to tweak the color temp further. A Color Management control is said to enhance dull colors, but it didn't have any effect we could discern, so we kept it turned off. There are two controls said to adjust the picture on the fly, Dynamic Gamma and Automatic Gain Control, but we left them off for testing purposes since we set the brightness and contrast controls ourselves. A control called Natural Cinema affects 2:3 pull-down processing and should be left in the default Auto most of the time. Finally, there's a pair of noise reduction controls (see the Performance section for their effects).

The list of conveniences starts with a Twin view function that allows you to watch two channels or sources at the same time. It's pretty limited however; you can't watch the two HDMI inputs at once and can't engage Twin view with 1080p sources, for example. Naturally, JVC includes an ATSC tuner. We counted three aspect ratio choices for high-def sources and four for standard-def sources.


The JVC's main input bay is located on the side instead of the back.

That side-mounted input bay includes the standard selection of jacks, although many of them double- or triple-up. Inputs 1 and 2 are dedicated to HDMI ports; Input 3 offers component video, S-Video or composite video; Input 4 a choice of component or composite video; and Input 5 (located on the front panel) a choice between VGA-style computer and composite video. Unfortunately, the PC input is limited to just 1,024x768 resolution.

Performance
The JVC HD-58S998 turned in a good overall performance, with one big exception. Our review sample suffered from fairly severe geometry errors, which, among other issues, caused horizontal lines to appear curved upward toward the edges. Otherwise we appreciated most aspects of the set's picture quality, including its solid black-level performance and relatively accurate color.

As with most HDTVs, the JVC HD-58S998 can get blindingly bright, so our first step in adjusting it for our darkened room was to attenuate the light output around 35 FTl. We ended up reducing the Picture and Iris controls almost all the way to make that happen, but the end result was a big improvement in black levels. In addition, we adjusted the Warm color temperature preset via service menu calibration. Prior to adjustment, the Warm preset came relatively close to the 6,500K standard, although it tended to get bluer the brighter the image became--a characteristic that calibration couldn't completely fix. As a result the set's grayscale tracking wasn't as good as we would have liked. For details see the geek box below, and for a complete look at our user menu settings, check out the Tips & Tricks section.

We didn't have any big-screen rear-projection TVs around to compare to the JVC, so we settled on a couple of competitively priced plasmas, the Panasonic TH-58PX600U and the Vizio VM60PHDTV, along with our reference Pioneer Pro-FHD1. We chose the Blu-ray of League of Extraordinary Gentlemen for our test material, played on a Samsung BD-P1000 at 1080i resolution.

In dark scenes, the JVC more than held its own against the competition. As Quatermain and Reed ride toward League HQ in a darkened carriage, for example, the black of the letterbox bars below the image, as well as the leather of the seat and the shadowed post along the window of the carriage, appeared nice and inky. Black areas weren't quite as dark as on the Panasonic plasma but they were definitely darker than on the Pioneer. We did notice that the JVC didn't display the best possible shadow detail, however. Regarding the leather seat, for example, we couldn't discern the darkest details unless we increased the brightness control to an unacceptable level, so we ended up having to sacrifice some shadow detail to keep those inky blacks.

We appreciated that the relatively accurate grayscale kept skin tones looking natural, from Quatermain's ruddy face to the delicate, pale skin of the toothsome Mina Harker. We were able to achieve decent saturation while staying realistic, a testament to the JVC's accurate color decoding, although colors didn't have quite the same intensity and richness that we saw on the Pioneer and Panasonic plasma TVs. We also saw that primary-color accuracy, especially the yellowish greens, left a bit to be desired.

Like many of the HDTVs we've tested recently, the JVC HD-58S998 failed the test for proper 1080i deinterlacing of film content found on the HQV HD DVD. In other words, we'd recommend using the 1080p setting on your source, if possible, because you may see some artifacts in 1080i mode. We noticed some moire, which appeared as faint concentric lines in the stands, during a pan over the stadium in HQV. We checked for similar effects during League, for example in the pan around the meeting room at League HQ or the one following the Nautilus as it slipped into Venice, but we couldn't discern any problems. The JVC resolved every detail of still 1080i sources, according to our test pattern generator, and the image looked as sharp as we expect from a 1080p HDTV.

The biggest problem we had with the JVC's picture quality had to do with its uneven geometry. Ideally you want a grid displayed on a TV screen to have perfectly straight horizontal and vertical lines, and with most microdisplays and all flat-panel sets, they come pretty close. With the HD-58S998 we reviewed, however, it was a different story. The most egregious issue was with horizontal lines in the top two-thirds of the screen, which curved upward toward the sides, the left more than the right, for an effect that kind of resembled a crooked smile. Other areas of the grid looked funky, too; vertical lines toward the edges bowed inward at the top and slightly outward toward the top middle, in contrast to the screen's lower third, which was mostly even.

The effect of the geometry errors depended largely on program material. In some shots, such as when the top area of the screen was occupied by clear sky, we couldn't notice the flaw at all. In others it was almost comically apparent; full-screen program guides, menu systems, onscreen text, and pans over anything with a straight horizontal edge were the typical offenders. Of course the letterbox bars on 2.35:1 movies, such as League and many others, also make the upward curve on the edges quite obvious. We mentioned the issue to JVC's representative and he said that the set uses a concave mirror that's responsible for the errors.

Brightness and color uniformity across the screen, on the other hand, were excellent. Looking at flat gray fields, we didn't see noticeable discoloration from one part of the screen to another, and brightness drop-off from the middle of the screen to the edges was average for a rear-projection HDTV. Unlike typically more-uniform flat-panel sets, projection-based displays are always brighter in the middle and get darker toward the sides.

We did notice some stationary screen grain, which looked kind of like tiny sparkling flecks and was visible primarily in white areas, like the snow outside the fortress in League and in flat fields like sky. Although more noticeable on the JVC than on many other RPTVs we've tested, the grain wasn't too distracting in most scenes, especially with our darkened picture settings, but of course the plasmas didn't exhibit any grain. On the other hand, many plasmas, including the Panasonics, exhibit some false contouring, whereas the JVC was basically free of such artifacts.

With standard-def tests the JVC turned in a decent--but by no means spectacular--result. On the moving diagonal lines from the HQV test DVD, played at 480i over the component video inputs, we noticed more jagged edges along the moving diagonal lines and in the stripes of the waving American flag than we'd like to see. The set did resolve all of the detail of the disc, although we detected some flicker in the color-bar test pattern. We also noticed that the JVC only engaged 2:3 pull-down detection correctly when the Natural Cinema setting was in the On position; it failed to implement 2:3 when in the default Auto position, introducing moire into the grandstands. We did appreciate that the JVC's noise reduction did an effective job of cleaning up the snowy-looking motes on the HQV disc's skies and sunsets, although we'd recommend avoiding the Max setting since it softened the image too much.

We also checked out the JVC's ability to handle PC signals via its VGA input, and the results were disappointing. First off, the maximum resolution is just 1,024x768, which is laughably low for a display with 1,920x1,080 pixels. Second, the image was relatively soft--according to DisplayMate, the set only resolved about two-thirds of the lines in both horizontal and vertical axes, which isn't a big surprise given that the TV has to scale 1,024x768 up to fit the screen. Unfortunately it doesn't fit the screen all that well anyway. There were black bars to either side and above and below, and no way to expand the desktop to occupy the entire screen.

Before color temp (20/80) 6682/7142 Good
After color temp 6494/6834 Average
Before grayscale variation +/- 509K Average
After grayscale variation +/- 214K Average
Color of red (x/y) 0.653/0.325 Average
Color of green 0.295/0.689 Poor
Color of blue 0.143.0.052 Average
Overscan 2.8 percent Good
Black-level retention All patterns stable Good
Defeatable edge enhancement Y Good
480i 2:3 pull-down, 24 fps Y Good
1080i video resolution Pass Good
1080i film resolution Fail Poor

7.2

JVC HD-S998

Score Breakdown

Design 9Features 7Performance 6