Physically identical to the BenQ MW663 but with a lower resolution, the BenQ MX662 is a bright, capable data projector with a good range of connection choices, including the ability to run presentations off of a USB thumb drive and wireless connectivity using an optional Wi-Fi dongle. Its data and video quality is fine for typical business or school use.
The DLP-based MX662 has XGA (1,024-by-768) native resolution, and a rated brightness of 3,500 lumens. It is glossy black on the top and the base, with white sides and rounded corners. Metal focus and zoom rings (a useful 1.3:1 ratio) are inset behind the lens, the zoom lever is thin and hard to manipulate. The projector is quite portable at 4.9 by 12.3 by 9.6 inches (HWD) and a weight of 6.1 pounds; it comes with a soft carrying case.
The MX662 has a solid range of connectivity choices, including HDMI; 2 VGA ports (which can double as component video); monitor-out; S-video; 3 RCA jacks for composite video/audio; audio-in; audio-out; serial, a mini-USB type B port for connecting with a computer for USB Display (which emulates what's on your computer screen) as well as for downloads, and a USB type A port for running a presentation from a USB thumb drive. (File types supported are JPEG, JPG, BMP, PNG, GIF and TIFF). An optional Wi-Fi adapter, which plugs into the USB A port, is available for $50.
Data Image Testing
The MX662 projected an image large enough to fill our test screen, about 60 inches on a diagonal, from about 6 feet away. The image stood up to a good amount of ambient light without notable degradation.
In data image testing,using the DisplayMate suite, the BenQ MX662's image quality proved suitable for typical presentations. Yellows and reds tended to be on the dull side, there was some mild yellow fringing in a few images, and some grays looked slightly green. When using a VGA connection, there was heavy pixel jitter in some images that I eliminated by adjusting the phase setting. In our text testing, black on white text was sharp down to our smallest size; white-on-black text showed blurring at the two smallest type sizes, with the smallest size barely readable. Switching from a VGA to an HDMI connection had little effect on image quality.
All single-chip DLP projectors are potentially subject to the rainbow effect, the appearance of little red-green-blue flashes, usually in bright areas against dark backgrounds. Although such rainbow artifacts were evident with the MX662 in a few images, they are seldom a problem in data images, even to people sensitive to the effect.
Video and Audio
Video quality was suitable for showing shorter clips as part of a presentation. I noticed rainbow artifacts in scenes that tend to bring them out, and although the effect wasn't particularly severe, it's likely they would be distracting a fair percentage of viewers. There was considerable loss of detail in some bright scenes. Also, pixilation (which shows as traces of a fine grid or hatching) was more pronounced than is usual for an XGA projector.
Audio from its two-watt speaker was of modest volume, loud enough for a smaller room, and of reasonably good quality.
The MX662's expected lamp life is up to 6,500 hours. EcoBlank mode lets presenters easily take a break, blanking the screen out and lowering energy consumption up to 70% while it's paused. The projector also enters EcoBlank mode after 3 minutes without a signal. SmartEco mode automatically adjusts lamp brightness, depending on lighting conditions.
This projector is 3D-capable, with HDMI support for 3D Blu-ray as well as Nvidia 3DTV Play, enabling it to display 3D content from NVIDIA 3D Vision. You'll need to buy active-shutter 3D glasses separately. BenQ's own glasses can cost more than $70 per pair, but although you can get compatible glasses elsewhere for considerably less, they still can run into a lot of money if you're trying to outfit a classroom or business.
Two Editors' Choice XGA projectors, the Epson PowerLite 1835 XGA 3LCD Projector, and the Epson PowerLite 93+ lack 3D capability. The MX662 matches the Epson 1835's 3,500-lumen brightness and exceeds that of the Epson 93+ (2,600 lumens). Both offer somewhat better data and video image quality than the MX662, and as LCD projectors they're free of rainbow artifacts.
The BenQ MX662 is a little lighter than the BenQ MX661, a 3,000-lumen XGA projector. The MX662 couldn't match its sibling's video image quality, and has a slightly sparser selection of ports, lacking USB type B, Ethernet, and a microphone jack. But the BenQ MX662 is brighter, and it's more than up to the task of handling most business or classroom presentations.
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