http://www.usa.canon.com/cusa/sna/office/projectors_visualizers/lv_7390?pageKeyCode=writeReviewPage
LV-7390
22133
Features
Quiet Operation and Closed Captioning
Quiet Operation
No one wants to have a projector which competes with you for the audience's attention and the LV-7390 keeps itself in the background with its quiet operation. Any potential distraction from fan noise is minimized, with a sound level of 36dB, which can be reduced to 29dB when in Quiet Mode.
 Closed Captioning
If you are giving a presentation to a hearing impaired audience, or are working in a venue with a good deal of background noise, the LV-7390 gives you the option of closed captioning to facilitate understanding of any dialogue.
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