Acer K520 Laser-LED Projector
Good data image quality. The K520's data image quality isn't in the top tier, but it's more than acceptable for most purposes. In the brightest mode, colors are a little dark. But colors are fully saturated, and color balance is excellent, with suitably neutral grays at all levels. With every other preset, the colors fare much better, looking both vibrant and well saturated. The trade off is that color balance isn't quite as good as in Bright mode. With most presets, its gray scale is acceptably neutral through most of the range from black to white, but just a little off with the brightest shades.
One issue is that I couldn't get crisp focus across the entire screen. When I adjusted the lens for best focus at the center of the screen, text was easily readable at 7 points in the center area, but hard to read at sizes below 9 points at the top and bottom of the screen. If you don't need to show fine detail, however, this won't be a problem. Very much on the plus side, screens that tend to cause pixel jitter were nearly rock solid with an analog connection, with no obvious improvement when I switched to HDMI.
Eco-friendly and money saving. The hybrid light source in the K520 offers several advantages. Being mercury free is one important plus. So is the 20,000-hour rated lifetime, which lowers the total cost of ownership if you anticipate extensive use of your projector, since you don't have to buy lamp replacements. It also lowers the carbon footprint by eliminating the need produce or ship replacements. In addition, the light source uses less power than conventional lamps, which lowers both the carbon footprint and running costs. I measured the power draw at 106 watts in full power mode, which can be about 1/3 the draw of conventional models.
Better than expected audio. The K520's audio is surprisingly usable, with good quality and higher volume than you might expect from its 2-watt mono speaker. As with many projectors, one test clip with quietly spoken dialog was essentially impossible to hear from more than a couple of feet away. However, the sound in most clips was loud enough to fill a small conference room. If you need a higher volume or stereo, you can connect an external sound system to the audio output.
|Review Contents:||Introduction||Strengths||Testing and Connectivity||Limitations and Conclusion|