The PM670T has a similar design to LG's high-end LCD TVs. The body is black, but the bezel is lined with a layer of charcoal grey plastic with imitation brushed metal. It looks good, although we of course prefer real metal. But at this price, who's complaining?
It's HbbTV-compatible (HbbTV is an interactive service for TV channels that has yet to make its way to most UK networks). The Smart TV online services menu is especially well designed. Navigation is simple and fluid, a real pleasure to use. Unfortunately, few of the apps are really worth the effort.
The media player is the same as on LG's other models and handles all file formats perfectly. The only thing it doesn't support is chapters.
The PM670T comes with a basic, non-backlit remote control. A second, Wii Remote-type control is sold separately. It's convenient, fast and precise. We love it!
But if you're not a fan, there's also an iOS/Android app that lets you use your smartphone or tablet to control the TV.
2D Image Quality
No surprises here. The PM670T offers all the advantages common to plasma technology: wide viewing angles, uniformity across the screen, deep blacks and fast response times (8 milliseconds).
After using our recommended settings (see inset), we obtained a very good image. The PM670T has accurate colours (average Delta E = 3) and balanced colour temperature of 6700 K. All we could really criticise about it is that the lightest shades of grey appear slightly overly bright, but it's hardly even noticeable.
The PM670T has good contrast. Even with not-very-bright whites (140 cd/m² on average) the contrast goes up to 2000:1, thanks to particularly deep blacks (.07 cd/m²). As a result, it wouldn't be a good idea to use this TV in a room that gets a lot of sunlight. For one thing, the image isn't bright enough, and for another, the glossy screen reflects like crazy.
When certain people sit too close to plasma screens they see tiny flashes of light. Only a minority of people are affected by this problem, but to be sure you're not one of them, you should try it out in a store or at a friend's house before buying.
The perfectly uniform panels used in plasma TVs make them immune to clouding (bright patches on otherwise dark images found on certain LCD screens). Five out of five!
LG has informed us that it is unable to send us the active 3D glasses. We have no choice but to send the TV back without reviewing the 3D function. It's too bad, because plasma screens are known for great 3D. Oh well.
Like all 3D plasma TVs, the PM670T uses active 3D technology. The glasses aren't included, so you'll have to spend about £140 extra to get pairs for a family of four.
The PM670T's speakers are similar, if not identical, to the LG 42PA4500's. In other words, the audio may be good enough to watch the evening news, but that's it. The bass sounds more like the body vibrating than actual bass and the highs saturate quickly. Basically, an entry-level 2.1 kit will do better than this.
While plasmas are known for their uniformity and wide viewing angles, they're also known for consuming more energy than LCDs. As is to be expected, on standby our wattmeter detects nothing, but when on and running we picked up 264 W for this 50" screen (383 W/m²). That's three times more than 50" LCD TVs.
- Accurate colours
- Deep blacks (.07 cd/m²)
- Highly responsive (8 ms, on average)
- Lacks brightness (140 cd/m², on average)
- Terrible sound quality
- Consumes a lot of power
- Glossy screen subject to reflections
- No motion interpolation
This is a good plasma TV for anyone looking for the home cinema experience without spending too much. But for just a bit more money, we prefer the Panasonic ST50, which has higher contrast and more precise image adjustment settings.