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Topic: Throw Distance
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Joined: May 11, 2010
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Hi all,

Can anyone tell me how to calculate throw distance for 3M X90 projector on an Audipack Mirror Kit model MKT200 for 120" diagonal screen size in 4:3 aspect ratio?

Your quick responce will be appreciated.

Thank You & Regards
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Joined: Mar 28, 2005
Posts: 11,809
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It's the same as it would be without a mirror kit.

http://www.projectorcentral.com/3M-X90-projection-calculator-pro.htm

With a standard lens, 12'1" to 14'7". You just add the distances that the mirror folds the pathway.

So, 6' from projector to mirror, then 7' from mirror to screen = 13' which is perfectly fine. You just have to make sure you are in the right range, and that you are using a standard lens.

Their short throw lens only allows it to go as close as 9'10" for that same 120" diagonal, but has greater range, so 9'10" to 15'11" is possible with their 'short throw' lens option.

But, that distance stays the same with or without a mirror.
AV Integrated - Theater, whole house audio, and technology consultation during the build and installation process in the Washington, DC metropolitan area.
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Joined: Jun 11, 2007
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As AV_Integrated said, the throw distance is the same, with or without the mirror. The difference is the throw distance is folded.