Projector for a 5’ Deep Enclosure

[chrisward3]

As the title says. I have a 9x12x5 enclosure from Carl’s coming in the next couple weeks. Looking for a projector to work with an EyeXO. I’ve been through projectorcentral and the optoma and BenQ calculators.

Optoma 1080/1090/412st are out (I think) based on the vertical offset and the proximity the enclosure (6-8ft).

BenQ th671st seems like the only option that will work with the enclosure (3’ vert offset at 11-13’). But looking for opinions or experience on its brightness at that distance.

I’d be happy to look for any other suggestions under $1.5k if you have them!

[GarnetGolf]

Offset is not necessarily a deal breaker. You can sim tilt the projector to reduce offset and correct the image with vertical keystone.

[Sixmudd]

As the title says. I have a 9x12x5 enclosure from Carl’s coming in the next couple weeks. Looking for a projector to work with an EyeXO. I’ve been through projectorcentral and the optoma and BenQ calculators.

Optoma 1080/1090/412st are out (I think) based on the vertical offset and the proximity the enclosure (6-8ft).

BenQ th671st seems like the only option that will work with the enclosure (3’ vert offset at 11-13’). But looking for opinions or experience on its brightness at that distance.

I’d be happy to look for any other suggestions under $1.5k if you have them!

I just had my optoma 412st ceiling mounted. Had to tilt it upwards and keystone adjusted. I also had an enclosure slightly in the way but it was fine. My screen is a little smaller than yours though

[3on3putt]

How high is your ceiling?

[chrisward3]

How high is your ceiling?

Around 11'.

How much keystone can I adjust before it starts to affect the image quality or brightness?

[3on3putt]

Around 11'.

How much keystone can I adjust before it starts to affect the image quality or brightness?

I think you actually want some vertical offset in your case. Enclosure is 9 feet high and ceiling is 11, so you have 2 feet to work with in between enclosure and ceiling. Vertical offset allows you to mount the projector higher and get it more out of the way. If you go with the BenQ, you'll need to mount it right around 9 feet. With an Optoma or an InFocus you could mount it around 10.5 feet high. That will get the projector more out of sight out of mind and should still be able to drop the image under the front crossbar of your enclosure. If it doesn't quite drop it enough you can just back it up a little and zoom out slightly until it gets under the crossbar.

As far as keystone, it's hard to really say exactly how much is okay but generally speaking a small amount of keystone correction is fine but try to avoid using too much of it. Try to choose and place a projector in a spot that you won't have to use any keystone or zoom or custom resolution or any other sort of manipulation. Obviously that's not always possible to do, but the goal should be to get it as close as possible so you can minimize the amount of correcting you need to do.

[chrisward3]

I think you actually want some vertical offset in your case. Enclosure is 9 feet high and ceiling is 11, so you have 2 feet to work with in between enclosure and ceiling. Vertical offset allows you to mount the projector higher and get it more out of the way. If you go with the BenQ, you'll need to mount it right around 9 feet. With an Optoma or an InFocus you could mount it around 10.5 feet high. That will get the projector more out of sight out of mind and should still be able to drop the image under the front crossbar of your enclosure. If it doesn't quite drop it enough you can just back it up a little and zoom out slightly until it gets under the crossbar.

As far as keystone, it's hard to really say exactly how much is okay but generally speaking a small amount of keystone correction is fine but try to avoid using too much of it. Try to choose and place a projector in a spot that you won't have to use any keystone or zoom or custom resolution or any other sort of manipulation. Obviously that's not always possible to do, but the goal should be to get it as close as possible so you can minimize the amount of correcting you need to do.

Thanks for the replies in my thread about projectors and vertical offset.

The main thing I'm not understanding, is how can a projector project from above the enclosure, and have the image still fill as much of the 9x12 screen as possible? Wouldn't any projector need to be mounted IVO 9' above the ground? Thats why the BenQ seems to be the best option with the 3" vertical offset. An Optoma with a ~16" offset would still need to be mounted at ~9ft, but would have to be pointed up slightly with the keystone corrected to create a square image?

The only way to mount a projector high and avoid images being cut off would be to just use an impact screen with no enclosure...which isn't an option with young kids (and lets be honest...myself) with the occasional shank or sky.

A BenQ centered at 12ft back and 9ft from the ground should be okay if I hit from 10ft. An Optoma would be at roughly 8ft back and 9ft off the ground (but tilted up slightly and corrected). The EyeXO sits at 6.5ft from the screen at 10ft high, so there shouldn't be any conflict there.

Sorry if I'm talking in circles and creating confusion. If there are any pictures, examples, diagrams, id love to see them and wrap my head around it.

[3on3putt]

Thanks for the replies in my thread about projectors and vertical offset.

The main thing I'm not understanding, is how can a projector project from above the enclosure, and have the image still fill as much of the 9x12 screen as possible? Wouldn't any projector need to be mounted IVO 9' above the ground? Thats why the BenQ seems to be the best option with the 3" vertical offset. An Optoma with a ~16" offset would still need to be mounted at ~9ft, but would have to be pointed up slightly with the keystone corrected to create a square image?

The only way to mount a projector high and avoid images being cut off would be to just use an impact screen with no enclosure...which isn't an option with young kids (and lets be honest...myself) with the occasional shank or sky.

A BenQ centered at 12ft back and 9ft from the ground should be okay if I hit from 10ft. An Optoma would be at roughly 8ft back and 9ft off the ground (but tilted up slightly and corrected). The EyeXO sits at 6.5ft from the screen at 10ft high, so there shouldn't be any conflict there.

Sorry if I'm talking in circles and creating confusion. If there are any pictures, examples, diagrams, id love to see them and wrap my head around it.

Vertical offset is the amount of space between the middle of the lens and the top edge of the image (for a ceiling mount) or the middle of the lens and the bottom edge of the image (for a floor mount). So no, an Optoma with 16 inches of vertical offset would not mount at 9 feet high for your 9 foot screen. It would mount at 10'4''. The image is sort of shot down and then out from the lens. It's not pointed up and keystoned. It's the way it works by design.

Vertical offset can be both good and bad depending on your ceiling height and screen height. In your case, it will work to your advantage.

You can still mount a projector high with an enclosure. Plenty of people do this exact thing (myself included). It's one of the benefits of vertical offset.

[ozzy]

Did you ever sort this out? And what did you go with? I'm struggling with this same dilemma right now. It seems like if I have an enclosure that comes out 5', then any amount I mount the projector higher than the enclosure will cut-off the image just due to the geometry of it. So if I have an 8.5' high enclosure, I would want the projector mounted at ~8.5' with as little vertical offset as possible in order to use the maximum height of the impact screen

[chrisward3]

Went with the Optoma 1080 and mounted it just under the 9' high enclosure and pointed it up. Keystone was set to correct and I cant tell any difference or distortion with TGC, View, Youtube, Satellite, etc...