Rainbow Artifacts: Though it lacks a traditional color wheel, the XJ-A250 still sequences RGB colors onto its DLP chip from the laser/LED combo, and in certain motion video sequences, rainbow artifacts similar to those from traditional color wheels may be noticeable.
Fan noise: Small physical packages require high-speed fans for full brightness as there is a lot of heat to evacuate from the chassis. The XJ-A250 has three illumination modes and a different fan speed for each one. Save mode is reasonably quiet. In Eco mode, the middle setting, fan noise is more obvious but acceptable in a presentation/conference room setting. With Eco Off you get the brightest picture, but it revs up the fans dramatically. The resulting noise may make hearing the presenter difficult if you are seated anywhere near the projector.
Audio Quality: The XJ-A250 has a single 1-watt speaker, so hearing audio content may be compromised in noisy environments. This is more noticeable when operating in Eco Off mode when fan noise is at its maximum. That said, the audio clarity is good with no buzz or rattle except in the highest 10% of the volume range.
The Casio XJ-A250 delivers a unique set of benefits and limitations. It's super slim profile certainly makes it convenient to pack, and a 20,000 hour light source eliminates the concern about lamp replacement cost. The long 2x zoom lens affords some set up convenience that is missing on most mobile projectors. Many will buy it for these three benefits alone.
However, people who buy 3000 lumen projectors usually do so because they need or want 3000 lumens of firepower. And while it is not unusual to find projectors that don't quite meet their lumen specs, this one falls farther short than most, even at its peak settings. But most users will want to opt for one of the eco modes to reduce fan noise. They will also want to uptilt the unit and keystone correct to get the image high enough on the wall. With these adjustments, it is difficult to get anywhere near 2000 lumens from this model, much less the rated 3000.
Not only does the XJ-Z250 fall short in lumen power but in color balance as well. This projector might best be described as functional for presentation use when the subject matter does not demand accurate color.
The XJ-A250 offers you a trade-off...increased convenience and a 20,000 hour light source in exchange for lower lumen output than advertised, and image quality that is adequate to the task, but not among the best. Each buyer will determine whether that trade-off is worth it.
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