The Epson Home Cinema 1440 will thrown a 120" diagonal 16:9 image from a distance of between 11.7 and 19.3 feet, give or take a couple inches. It is easily bright enough to fill a much larger screen. At 180" diagonal, you'll need to set it back between 17.5 and 29 feet. Use the Projection Calculator to determine your actual throw distance options based your desired screen size.
Since the zoom lens curtails light output at the telephoto end by 36%, if you need the full lumen power of the projector you will want to place it relatively close to the screen in order to use the wide angle end of the zoom.
There is no lens shift. The HC1440 throws the image so that its ideal placement is on a shelf or stand behind and just above the heads of the audience. About 88% of the projected image is above the centerline of the lens and 12% is below the centerline. So it can be positioned on a shelf or stand without requiring much if any tilt.
If you wish to ceiling mount it, that's no problem, but the projector will likely require an extension drop tube so that it is placed at a height that will accommodate its throw angle without a tilt. The manual does not stipulate any maximum tilt, but 15 degrees is about the maximum recommended for most projectors due to the fact that tilting the unit will interfere with its cooling system. A few projectors are built to withstand non-horizontal installations, but the 1440 is not one of them.
As you can see below, the 1440 has a form factor with relatively shallow depth, about 11.5 inches. So it can be placed on a bookshelf as long as there is sufficient clearance to the sides and above it for heat dissipation.
Important warning. Due to the unique throw angle of this projector, you might be tempted to invert it and set it on a high shelf. Never invert a projector and set it on its top in direct contact with a shelf -- it is pretty much guaranteed to overheat in that situation.
Ideal throw distance. The big question is this -- where is the ideal placement when you've got a 1.6x zoom and you can choose to ceiling mount it anywhere between 12 and 19 feet to hit a 120" screen? The trade-offs are these:
1. If you place it at 12 feet, you get the maximum light output from the projector which is good if you need it. The downside is that in this position it throws the widest angle cone of projected light, and light striking the screen toward the sides of the image will tend to bounce off away from the center viewing position. So it is a bit less than ideal for even screen illumination.
2. If you place it at 19 feet, you get the minimum light from the projector, but if that is already enough it doesn't matter. The advantage is that you narrow the cone of projected light, providing a more even illumination of the screen since light hitting the sides of the screen does not bounce off at as much of an oblique angle.
3. If you place it at 15-16 feet, you get equal trade-offs of the above. Also, in theory the midpoint of the zoom lens is its optical sweet spot, but a 1080p resolution image is not going to tax the optical resolution of the lens enough for you to notice.
Plan for lamp degradation. In planning your installation, keep in mind that a good rule of thumb is to anticipate that high pressure lamps will lose 25% of their brightness in the first 500 hours of operation, then degrade more slowly after that. With this in mind, many people choose their screen size and screen gain assuming they will use the projector's eco-mode for the first 500-750 hours, then switch to full lamp mode for the remainder of the lamp's life. By following this strategy you can even out the average light levels on the screen over the lamp's entire life.
On the other hand, if you need the full 4000+ lumens, you can keep it up at that level by replacing the lamp more frequently than the estimated lamp life. This is particularly easy to do with the HC 1440 since replacement lamps are only $149.
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|Limitations||Competition and Conclusion|
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