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Mobile Presentation
AAXA P4 Projector AAXA P4
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Street Price: n/a
Weight: 0.8 lbs
Aspect Ratio:16:9
Lens Shift:No
Lamp Life:15,000 Hrs
15,000 (eco)
Connectors:  Composite, VGA In, Audio Out, MemoryCard, USB

AAXA P4 Pico Projector

Marc Davidson, January 20, 2012

Test Results and Connectivity

Brightness. I measured the P4 at 55 lumens, a relatively low 69% of its 80 lumen rating. In general, that would be bright enough for my tastes for a 63" diagonal image at 16:9 aspect ratio in a dark room. Because you're limited to 4:3 format with external devices, however, you may have to use a smaller size image.

For a widescreen image from an external source, you need letterbox format, which for the P4 translates to using only a 16:9 portion of a 4:3 portion of the DLP chip's 16:9 array. This gives you a much dimmer image than you would get using the full array for the same image size. For my tests with the lights off, the 16:9 image size I settled on was 53" diagonally, with the projector about 9.5 feet from the screen. If the projector were using the entire chip, the image would have been 63" diagonally.

The good news is that this limitation doesn't apply to video stored in memory. I found both 720p and 1080p clips stored on a USB key, microSD card, and internal memory highly viewable at 63" diagonally in a dark room. Also, AAXA says that its next firmware upgrade, which it expects to make available for downloading in early 2012, will let external sources take advantage of the chip's widescreen format, eliminating this issue entirely.

Excellent brightness uniformity. The P4's 92% brightness uniformity is not only better than most pocket projectors, it's better than most standard projectors. I didn't see any variation in brightness even on a solid white screen.

Connectivity and choice of sources. The P4 offers a typical set of connection options for a pocket projector. For computers, it comes with a cable that connects to proprietary port on the P4 on one end and a standard VGA port on the other. For video sources, it comes with an adaptor that plugs into the P4's AV port and ends in three female RCA phono plugs for composite video and stereo audio. In addition, AAXA sells optional AV cables for iPod, Zune, and PSP connections for $12.99 to $19.99 each.

The P4 also offers a slot for a microSD card; a USB A port for an external keyboard or USB memory key; and a mini USB port that you can also use for a USB memory key with a supplied adaptor or use to connect to your computer to copy files to and manage files in the P4's 2GB internal memory. The only other connectors are a miniplug jack for audio output and the power connector. The P4 worked as promised with JPG and WMV files in my tests. AAXA says it can also read MP4, MP3, and AVI files, as well as formats for various Windows CE apps.

Review Contents: Intro and Strengths Testing and Connectivity Limitations and Conclusion

Reader Comments(5 comments)

Posted Apr 30, 2014 11:11 PM

By R.P

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Amazing Projector! Ideal for students and Adults !! I use it all the time.

Posted Nov 5, 2013 10:50 AM

By Mandy

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Where can I purchase this device, and not the P4-X? The website itself only sells the P4-X and other websites will say P4, but actually be selling you the P4-X. The P4 has the windows ce software, whereas the newer P4-X does not. Please advise.

Posted Dec 30, 2012 10:02 PM

By teacher angy

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Thank you for this info. It was good to know about using a regular keyboard and if i could just open a powerpoint and show it.

Posted Oct 4, 2012 4:38 PM

By Dave Sherrill

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Bought this product, and it for like a year. I am currently a college student who lives in messy and cluttered dorms, and I found this projector extremely useful. I use it for entertainment, and I can literally bring it everywhere.

Posted Feb 4, 2012 6:23 AM

By Andrew Ray

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Found a solution to the resolution problem for Mac OS X. Using switchResX, you need to create a custom display with the following settings: 1056x600, 60.000 Hz. (Note the 60.000 Hz, if you use 60.3Hz you'll get a vertical band on the screen where the color is off, causing glowing pink faces.) You then select the 800x600 option in the sources menu.

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