You have great things to say so make sure you're heard. The XJ-S31/S36 and XJ-S41/S46 come with a built in speaker including stereo-out and component RCA AV so you can really kick up the volume. Sound will be through built-in speaker or can be directed to optional speaker system by selecting Line-out in projector menu.
AV-In AV-in shows video and will play sound through internal speaker only.
AV-In Option Use Casio supplied cable for DVD Video ONLY. Optional cable would be required to direct DVD Sound to optional speakers.
