“Can this projector be used outdoor on a 172” screen? How dark does it need to be to see on screen Can I hook up speakers to it?”
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Hi, The Pro EX9240 projects an image of up to 300", so 172" should not be a problem. To project at 172" diagonal, the projector must be from 216.4" to 316.12" from the screen (the range is due to the zoom feature). It is designed to work indoors in well-lit rooms so it does not have to be completely dark, At 4000 Lumens though, full sunlight will wash the image out. The Pro EX9240 does not have a speaker output port. It does have a 16 Watt built-in speaker. If you want to use external speakers, you must split the audio signal off from the video signal and send it directly to your own sound system. Regards, Mark - The Epson Team.
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