I did note a little color non-uniformity in going from the right to the left sides of the projected image. This was only noticeable when projecting a full white or light grey test image and not when projecting actual photos or video.
As with all 3LCD projectors, the white brightness and the color brightness are the same, as compared to some DLP projectors which may exhibit much higher white brightness than color brightness.
The NEC UM352W is specified to produce a noise level of 38 dB in normal lamp mode and 28 dB in Eco mode. The value in normal (i.e., high lamp) mode is on the high end of what is typical for this class of projector, while the low lamp (Eco) mode noise level is more typical. While the noise level, especially with the lamp operating in normal mode, is certainly very audible, it should not be distracting when this projector is being used in a conference room or class room environment (remember this projector will be up at the front of the room, well away from everyone except the presenter). Changing to the “Eco” mode resulted in a noticeable decrease in noise level and to a level similar to that from a typical home theater projector when such a projector is operating in its normal mode.
The UM352W has a 20 watt built-in speaker that produces adequate volume to not only overcome the projector’s fan noise but also is sufficient to provide the audio in a classroom or moderately large conference room. As is expected from such a modest size built-in speaker, there is no bass but it still works well for voice narrations and background music.
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