The above lumens values were measured with the projector operating in normal lamp mode. Changing the projector to “Eco” mode reduced the light output by approx. 35%.
I measured the brightness uniformity with the projector sitting level on a table. The vertical and horizontal keystone adjustments were set to zero, meaning no electronic keystone correction was being used. The brightest point was near the center of the image and the greatest light fall-off was measured at the top right corner of the image where it was 27% lower than at the brightest point. While the degree of light fall-off measured at the at the top-right corner could be visually observed when projecting a full white test image, it was not obvious in normal use.
Color uniformity looked very good when projecting a full white screen test image.
The EX7240 Pro has a single 2 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 small conference room. As is expected from such a modest size built-in speaker and with only 2 watts of power, there is no real bass and the maximum volume is limited, but better than expected considering the 2 watt rating. Overall, the EX7240 Pro produces a little above average sound quality and volume for this class of portable projector but less than found in certain somewhat more expensive models, including some from Epson that feature higher powered speakers. It certainly will work well for voice narrations and background music for an audience seated around a typical conference table. If used in a larger room with a audience spread out over a greater area then an external amplified speaker could be used instead of relying on the projecctor's internal speaker.