What is the Toshiba 84L9363DB?
We reviewed LG’s 84-inch 4K TV at the end of last year and whilst we were impressed with our first taste of Ultra High Definition television, it was hard to justify the £23,000 asking price.
Design and Connections
Using the Hollywood Pro setting as a starting point, we set the brightness and contrast controls and turned off all the unnecessary features. We then ran our measurements and overall, the out-of-the-box performance was very good. If you look at the greyscale in the bottom left graph, you'll see that although there was a slight deficit in red and a small excess in blue, the overall errors we all below the tolerance level of three. There was a slight push towards cyan but it really wan't noticeable, whilst the gamma is tracking at 2.4 precisely. The colour accuracy was equally as impressive, with most near their targets and overall errors all below three, with the exception of red. There was an error in the hue of red and a slight excess in terms of luminance but even these errors were on the edge of being perceivable.
The two-point white balance control allowed us to calibrate the greyscale to a high level of accuracy, although it didn't allow us to fix a small excess of blue in the blacks. However even that measurement only registered an error of 2 and all the rest were well below 0.5, which is essentially perfect. The gamma was still tracking the 2.4 target precisely. We managed to make adjustments to the ColourMaster controls that resulted in a reference colour performance but real world viewing demonstrated that the normal problems of banding and blocking, incurred by its use, were present. This is a common issue with the CMS in Toshiba TVs, so instead we settled for the unadjusted colour performance which, with the exception of some small errors in red and some slight over-saturation in green, magenta and yellow, was already quite accurate,
With an 84-inch screen size, the L9363 is never going to be easy to light in a uniform manner, especially as it uses edge LED lighting. We assume that the decision not to use a full LED backlight array is cost related, after all the Samsung series uses a full LED array but cost upwards of thirty grand. Thankfully despite the limitations of edge LED backlighting, the uniformity was surprisingly good. There were still bright corners but overall the Toshiba was actually quite impressive when it came to its backlight. Where it wasn't so good was in terms of black levels, measuring 0.13cdm/2, which is poor even for a LCD TV. On the plus side it was bright, very bright, easily hitting our target of 120cd/m2 and giving an on/off contrast ratio of 923:1 and an ANSI contrast ratio of 745:1. The perceived black levels could be improved using the Active Backlight Control but this solution had its own drawbacks. Yes the blacks looked much better but since it is a global control there were also occasions when the brightness of the image would noticeably change. You could also get get a column of light if there was a white object against a black background. However, it is reasonably well implemented and for general viewing it largely helped without causing too many visible distractions.
The video processing was something of a mixed bag, with certain parts performing very well whilst falling down on simple things like cadence detection. Despite the presence of the Cinema Mode function in the Picture menu, the L9363 was unable to detect the 2:2 (PAL) film cadence and rather surprisingly it also failed to correctly detect the 3:2 (NTSC) film cadence. So you’ll need to rely on the upscaling in your Blu-ray or DVD players and set-top boxes to perform the task for standard definition film content sent through as an interlaced signal. However the 84L9363 had no problems correctly displaying Blu-ray discs and the 'CEVO Engine 4K' proved to be an excellent scaling processor, perfectly displaying all content onto the huge 84-inch screen.
The L9363 performed well in all our other tests, it had no problems in showing a mixture of film and video mixed content and was able to show a signal all the way up to peak white. All film and video content was wonderfully matched to the native 4K panel and the scaling algorithm took full advantage of the extra pixels to deliver a wonderfully detailed image. When it came to motion handling the L9363 delivered the usual 300 lines of resolution on the FPD benchmark disc, which is what we would expect from a LCD panel. This can be improved by using the ClearScan feature but in doing so you introduce the 'soap opera effect', so it is best reserved for sports broadcasts and avoided for films and TV dramas.
Whilst it's unlikely anyone is going to shell out nine grand on an 84-inch 4K TV just to play games, if someone does they're in for a treat. The 84L9363 returned an input lag measurement of 38ms which is one of the lower ones that we've recorded this year and when you combined this with the image quality and screen size, the result is a highly immersive and responsive gaming experience. We haven't picked up one off the next-gen gaming consoles yet but one can only imagine how good they would look on the big Toshiba.
- Standby: 0.0W
The following measurements were taken with a full screen 50% white pattern:
- Out-of-the-Box – Normal Mode: 410W
- Calibrated 2D Mode: 229W
Toshiba 84L9363DB Picture Quality - SD/HD
The recent Doctor Who special looked very impressive on the huge screen and with new Blu-ray purchases like Pacific Rim and Man of Steel, the L9363 took full advantage of its higher resolution panel to deliver wonderfully detailed images. However it is always worth remembering that the current crop of 4K Ultra HD TVs are still LCD panels with LED backlights and as such suffer from the limitations of the technology. So motion handling, whilst decent for a LCD panel, was still subject to blurring and on occasion the poor blacks and backlight uniformity became apparent.
Toshiba 84L9363DB Video Review
Toshiba 84L9363DB Picture Quality - 3D
Toshiba 84L9363DB Picture Quality - 4K
In the meantime, when it comes to testing we're left with the usual travelogue footage and stage scenes that the manufacturers provide. As always this footage looks incredible on the L9363's 4K panel and the larger screen size really benefits from the higher pixel count, with the added resolution being very obvious. Obviously this footage is at 30Hz, the L9363 doesn't have HDMI 2.0 but since the standards still haven't been agreed it is something of a moot point. All the demo footage is quite bright so it would be interesting to see how the Toshiba would handle darker film material but overall the 4K performance remained impressive.
- Big screen
- 4K panel
- Excellent scaling
- Superb 3D
- Very bright
- Great build quality
- Good sound
- Weak blacks
- Slight audio sync issues
- CMS still needs work
- Cadence detection failed
Toshiba 84L9363DB 4K LED LCD TV Review
Of course despite the 4K panel, the L9363 is still just an LCD TV with edge LED lighting, so it inherits all the problems that entails, especially poor blacks and motion handling. However the backlight uniformity was quite good, whilst the Toshiba was also bright and managed an accurate calibrated greyscale. The colours weren't so good however and the cadence detection was poor. Ultimately it is hard to justify the price tag, especially when you can get Sony's VW500 4K projector for less, but we'll be very interested in seeing how Toshiba's smaller and considerably cheaper 4K Ultra HD TVs perform.
Contrast/Dynamic Range/Black Level
3D Picture Quality
Ease Of Use
Value for Money
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