The BenQ MW535A WXGA Business Projector is equipped with a single 2 Watt speaker. It’s important to remember that this is a projector, not a stereo. That being said, at max volume, I couldn’t make out the audio for Disney/Pixar’s Coco streamed from Netflix above the sounds from the over-the-range hood (exhaust fan over my stove) in the next room. I tried again later in the evening with a BluRay copy of Disney’s Lilo and Stitch, only to have the same issue.
I ended up using an old, and very load, pair of PC speakers I dug out of the garage to try to increase the volume. I connected the speakers to the project’s Audio Out Mini-Jack, and got a slight increase in volume. However, even with these speakers, there were points where the audio was too quiet to understand.
While writing this, I have had Journey to Space playing at full volume in the next room on the internal speaker; if I hadn’t been the one to put it on, I wouldn’t know there was anything playing. My conclusion on the speaker inside this unit is that it is essentially unusable, aside from one or two, maybe three people, in an otherwise completely silent room, with the volume turned all the way up, sitting next to the projector and leaning into it; they will be able to hear and understand some of the audio. I suggest using a splitter between media source and the MW535A projector to route the audio signal into sound equipment that is entirely separate from the projector.