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ASK Proxima C300 and C300HB (DP8000 and DP8000HB) Projectors
Frequently Asked Questions: Installation
Do I have to buy an ASK Proxima ceiling mount? I see that other companies offer mounts for less money. Can't I
just build my own mount?
We strongly suggest that you use an ASK Proxima-approved ceiling mount with your projector. There are two basic reasons
for this.
First, our mounts are designed for a specific projector. They are built so they do not interfere with air circulation in and out of
the projector. This is an important because when you install a projector on the ceiling, you are installing it in the warmest
part of the room. Our mounts are made to bear the weight of the projector. We don't have any 'one-size-fits-all' mounts. We
use heavy-gauge steel and sturdy fasteners.
Second, should anything happen to your projector due to a non-approved ceiling mount, your warranty will not pay for
repairs.
Can I mount this projector on the ceiling?
Yes. You use a ceiling mount kit (SP-CEIL-001), available from your ASK Proxima reseller. You'll probably also want to run
installation and video cables to the projector, as well as a power cable. Many of these items are also available from your ASK
Proxima reseller. Most people arrange to have a professional installer mount the projector on the ceiling and run the cables.
What is the projection ratio (throw ratio) for this projector?
The horizontal throw ratio for this projector is 1.75 - 2.24:1 in 4:3 mode. The two numbers represent the largest and
smallest zoom settings. The horizontal throw ratio is based on the horizontal measurement of the projected image.
How do I use the throw ratio to determine throw distance or image size?
The horizontal throw ratio for this projector is 1.75 - 2.24:1 in 4:3 mode. The horizontal throw ratio equals the throw
distance divided by the image width. TR = TD / W. Let's say that you want to figure out how far back to place the projector
to achieve a 100" wide image in the default 4:3 aspect ratio. For the smallest zoom setting, the formula would be, 1.75 = TD
/ 100", or TD = 100" x 1.75 = 175 inches (about 14.6 feet).
For the widest zoom setting, the formula is 2.24 = TD / 100", or TD = 2.24 x 100 = 224 inches (about 18.7 feet). In other
words, you need to place the projector 14.6 to 18.7 feet from the screen to get a 100" wide image.
You can use the same formula to determine what size an image you get when you know what the throw distance is. In this
case, W (image width) = TD (throw distance) / TR (throw ratio). Let's say that you know the projector will be mounted 12
feet from the screen. For the widest zoom setting, the formula is W = 144" / 1.75 = 82.3 inches. For the smallest zoom
setting, the formula is W = 144" / 2.24 = 64.3 inches. Thus, if the LP790/LP790HB is 12 feet (144") from the screen, the
resulting image size will be 64.3" to 82.3" wide in 4:3 aspect ratio.
ASK Proxima has created a calculator that automatically provides you with throw distances and image sizes (including
horizontal, diagonal and vertical sizes). It is available from the ASK Proxima website.
Can this projector be mounted on the wall?
Yes, as long as it mounted either upside down or right side up. The projector cannot be mounted sideways.
Can the image be reversed and flipped?
Yes. When you mount the projector on the ceiling, you must flip the image so it appears right side up on the screen. To flip
the image, press the Menu button on the keypad. Navigate to Basic > Setup > System, and check the Ceiling option.
You can also reverse the image for installation in a rear projection system by activating the Rear option. In a rear projection
system, the projector is mounted behind a piece of opaque or frosted glass. The image projects on the back of the glass.
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