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How to determine PJ location?

583 Views 5 Replies 5 Participants Last post by AV Doogie, Oct 10, 2006

ejhuzy

Discussion Starter · Oct 4, 2006

I'm designing my HT and I started to wonder how do I know where to put my PJ and when should I buy it (I know you guys all say wait to keep the work going). It seems like most people here wait until far into the project to buy their PJ. How'd you determine your location?

I've been using projectorcentral's calculator to make sure my screen size and room work for particular PJs. But what I just realized is that when I'm building the room I need to run my conduit/wires to the PJ location. So wherever I run that conduit to is my location.

My problem is I'm debating between hanging the PJ from the ceiling or doing a back of room shelf. Which spec on a PJ tells me how high/low the PJ has to me mounted wrt screen?

Also, does horizontally/vertically shifting a lens ruin the picture?

Thanks,

Ed

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sivartk

· #2 · Oct 5, 2006

your percent offset will determine if it can be high shelf mounted (rightside up).

If the projector has a lens shift (and not electronic shift), you should notice no picture difference. If it is an electronic shift, you may notice a difference.

This from someone that has only bought / hung one projector...but hey, I love it!

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ejhuzy

Discussion Starter · #3 · Oct 9, 2006

Quote:

Originally Posted by sivartk
your percent offset will determine if it can be high shelf mounted (rightside up).

If the projector has a lens shift (and not electronic shift), you should notice no picture difference. If it is an electronic shift, you may notice a difference.

This from someone that has only bought / hung one projector...but hey, I love it!

Travis, thanks for the response!

Ed

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McCall

· #4 · Oct 9, 2006

You really need to at least have selected if not purchased our projector and know the size and mounting height of your screen first. Some projectors must be mounted within the area of the screen itself, that obviously affects where you place it, some need the lense to be in the center of the screen horizontally. also you need to know the throw of your projector for the size screen you are using or you may not be able to fill your screen etc. I bought my projector first , then learned all this stuff, which lucky for me just worked out, I could have been really out of luck.

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Brad Horstkotte

· #5 · Oct 10, 2006

Also depending on the projector, the lens could be in the center of the case or offset to one side - which would affect the placement of your mounting / A/C outlet / cable drop a little.

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AV Doogie

· #6 · Oct 10, 2006

A drop cieling in the area of the projector may be a good idea!

The projector throw distance and offsets are different for most manufacturers of equipment. If you know which two or three projectors you are going to buy, then calculate the throw distances for those and see if they overlap. The area of overlap is the area you want to mount your projector.

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