DLP Technology
The BenQ HT2150ST incorporates DLP (Digital Light Processing) technology for the projection of images. In brief, the version of DLP used consists of a lamp that sends light through a spinning color wheel, which, in turn, bounces light off of a single chip that has millions of rapidly tilting mirrors. The reflected light patterns then pass through the lens and onto the screen. The color wheel used in the HT2150ST is divided into six segments (RGB/RGB) and spins at 4x speed (with 60hz power systems such as the U.S. — 6x speed for 50Hz power systems). What this means is the color wheel completes 4 or 6 rotations for each frame of displayed video. The faster the color wheel speed, the more precise the color and lessening of the “rainbow effect” – an inherent characteristic of DLP projectors.
Short Throw Lens
In addition to DLP technology, which makes the HT2150ST great for gaming (and small spaces) is that it can project a 100-inch image from a distance of only 5 feet. The clearest image size range is from 60 to 100-inches, but the HT2150ST can project images as large as 300-inches if you move the projector farther from the screen.
Gaming Optimization
Although the HT2150 is a great projector for home theater use, BenQ is also touting features such as low input lag and no motion blur — both are factors that can put a damper on the gaming experience if they are present. With the ability to display large images from a short distance, there is plenty of room for dual or multi-player gameplay.
Video Features
HT2150ST has a 1080p display resolution (in either 2D or 3D — glasses require extra purchase), a maximum of 2,200 ANSI lumens white light output (color light output is less, but more than sufficient), and a 15,000:1 contrast ratio. Lamp life is rated at 3,500 hours in normal mode, and up to 7,000 hours in Smart ECO mode (changes light output level automatically based on image content).
Setup Tools
The HT2150ST can be table or ceiling mounted and can be used in either front or rear projection configurations with compatible screens. To aid in projector-to-screen image placement, vertical keystone correction settings of + or - 20 degrees are also provided. However, optical lens shift is not provided. The HT2150ST is ISF-certified which provides calibration tools for optimizing image quality for room environments that may contain some ambient light (ISF Day) and for rooms that are near-or-completely dark (ISF Night). Additional pre-programmed picture settings include Bright, Vivid, Cinema, Game, Game Bright, and 3D.
Connectivity
The HT2150ST provides two HDMI inputs and a VGA/PC Monitor input). One of the HDMI inputs is MHL-enabled. This allows the physical connection of MHL-compatible devices, such as select smartphones and tablets. Another input option that can be added is wireless HDMI connectivity via the WDP02 accessory. The WDP02 eliminates unsightly HDMI cable runs from your source devices to the projector (especially if the projector is ceiling mounted), but also increases the number of HDMI inputs to 4. Also, with BenQ claiming a transmission range of up to 100 feet (line-of-sight), this option can be used in very large rooms.
Audio Support
The HT2150ST includes a 3.5mm mini-jack audio input and a built-in 20-watt speaker system. The built-in speaker system does come in handy when no audio system is available, and it does include MaxxAudio Wave’s sound enhancement technology, but for a home theater or immersive gaming audio listening experience, an external audio system is definitely preferred. A 3.5mm audio output connector is provided for this purpose or you can opt to connect an audio-only output from your source component or game console directly to a stereo or home theater receiver.
Control Support
The HT2150 comes with onboard controls on the top of the projector, as well as a standard remote control. However, the projector also provides an RS232 port for custom control system integration, such as a physically connected PC/Laptop, or 3rd party control system.
Hands-On Impressions of the 2150ST
We had the opportunity to use the Benq 2150ST and have the following impressions.
The projector is compact, coming in 15 (W) x 4.8 (H) x 10.9 (D) inches and weighing about 8 pounds. In terms of features and performance, the 2150ST performs well. The short-throw lens makes the HT2150ST practical for smaller rooms while still providing a large-screen viewing experience. A 100-inch size image can be projected from a distance of only 5 feet (60-inches) 2D images are bright with excellent color and lots of light output. One pair of rechargeable 3D glasses were provided for our use. The 3D images were dimmer than their 2D counterparts, but there is very little evidence of haloing or motion blur. The video upscaling and processing is very good, with good noise and artifact suppression. However, the rainbow effect is sometimes visible. Although the 2150ST includes a built-in speaker system that provides sound quality that might be acceptable if an external audio system is not available, our suggestion is to invest in a Sound Base, or full home theater audio system, to best complement those large-screen images. If you have older video gear that does not provide HDMI connectivity, this projector may not be for you as there are no analog video inputs (as mentioned previously in this article). On the other hand, the 2150ST’s VGA/PC monitor input allows direct connection of PC’s and Laptops for large screen PC viewing suitable for gaming and Business/Educational presentations. The remote control is backlit making it easier to use in a darkened room. Although we wouldn’t consider the 2150ST a compact portable projector, it comes packaged with a carrying case that can also hold the power cord, user manual/CD, and a couple of pairs of 3D glasses (optional purchase).
Taking all into consideration, the BenQ is a great video projection solution for those that have limited space or prefer not having the projector mounted behind the seating area.
