HY300 Projector Screen Size: Wall Distance from 40 to 130 Inches

In plain terms, every metre of distance gives about 1.1 m of picture width. The makers' own figures line up with that:

• Magcubic Pro+: 80 inches at 5.2 ft (1.6 m), and up to 100 inches from about 2 m in its tripod bundle.
• Alwtniet Pro: 0.75–2.65 m for 35–135 inches, with 1.6 m suggested for 80 inches and up.
• Magcubic HY300F: 30–130 inches from 1.96–8.5 ft.
• Salange Pro+: 80–100 inches from 5.25–6.5 ft.
• XKTUJW Pro: 50 inches at just 1 m.

Most HY300 bodies share this short-throw lens. Salange compares it with the 1.41:1 ratio of many ordinary home projectors, which need about 3 feet more floor for the same 80–100-inch picture. For a bedroom where the bed sits close to the wall, that difference decides whether a big picture fits at all.

A few models differ. Xorytin's Pro+ states 1.1:1, which asks for about 20% more distance. Amovfilm and WOOPKER quote an optimal distance of 5.51 ft without a throw ratio.

Quote the sizes as diagonals, like TV sizes. The HY300 specs guide lists each model's stated range.

Some quick room examples at 0.9:1:

• A small bedroom, projector on a dresser 1.2 m from the wall: about 60 inches, 1.33 m wide.
• A bedroom with 1.6 m to spare: 80 inches, the size Magcubic recommends, 1.77 m wide.
• A living room, projector on a sideboard 2 m back: 100 inches, 2.21 m wide.
• A long lounge or a backyard at 2.6 m: 130 inches, close to 2.9 m wide.

Then think about where people sit. Viewing-angle guidelines from THX and SMPTE put the best seats at roughly 1.4 to 1.9 times the picture width away. For an 80-inch picture, that is about 2.4–3.3 m from the wall. Closer seats feel immersive but show the pixel structure of a 720p panel more easily.

Native resolution also caps the sensible size. Nearly every HY300 states a native 1280 x 720 panel, and makers keep their advice modest: ClokoWe recommends 40–100 inches, Salange 80–100.

For the stands and shelves that raise the lens, see HY300 stands and mounts.

A typical 2.4 m ceiling and a projector on a nightstand about 0.6 m tall leave roughly 1.8 m of throw. At 0.9:1, that gives a picture of about 90 inches, big enough to fill most of the ceiling above a double bed. From the floor, the full 2.4 m gives about 120 inches, if the ceiling has the room.

Three ways to set it up:

1. Nightstand, head tilted up. The quickest option. Auto vertical keystone squares the edges, but a steep angle costs some sharpness in the corners.
2. On the floor beside the bed. More throw means a bigger picture; watch that nobody kicks it.
3. Wall mount high on the wall, head pointing across the ceiling. A fixed setup that stays focused.

Choose the ceiling or rear projection mode if the picture appears upside down or mirrored. Magcubic's HY300F, for example, supports front and rear projection.

Electric focus earns its keep here. Magcubic's Ultra and SKUOU's HY300 Plus sharpen from the remote, so nobody has to stand on the mattress to reach the lens. ClokoWe's Pro+ focuses automatically.

Keep the fan vents uncovered when the head points up; a pillow resting against the body traps heat. The keystone and focus guide covers the tilt correction in more depth.

Digital zoom does not move any glass. It draws the image on a smaller part of the 1280 x 720 panel and leaves the rest black. At 80% zoom, the picture uses about 1024 x 576 pixels, roughly two-thirds of the panel's detail.

• Alwtniet Pro: resizes between 80% and 100% without moving.
• DreamFair Ultra: states a 50% zoom function for 25–110-inch pictures.
• BeeJovial HY300: lists digital zoom alongside auto keystone and manual focus.

The picture does not get brighter per square inch when zoomed, because the light that would have lit the edges is blocked, not moved. Moving the projector closer does the opposite: all the light lands on a smaller area and the picture gets brighter.

To make the screen bigger, move the projector back. None of the HY300s states an optical zoom, so distance is the only way to a larger picture at full resolution. Expect the brightness to fall as the size grows: going from 80 to 130 inches spreads the same light over about 2.6 times the area.

How far each size can go before it looks dim is covered in the brightness guide.

Three surfaces cover most movie nights:

• A painted wall. Matte white or very light grey, as smooth as possible. Fine texture scatters light and softens detail. Most bedroom walls take a 60–100-inch picture well.
• A white sheet outdoors. Stretch it tight over a frame, fence or washing line. Wrinkles show more than slight off-whiteness.
• A projector screen. A matte white screen gives the most even picture. Match its size to the throw you have, not the largest the box promises.

Match the screen format to the projector. HY300s draw a 16:9 picture, so a 16:9 screen avoids black bars on the sides.

A few rules of thumb for picking a size:

1. Measure the throw you can give the projector, then read the size off the distance chart.
2. Check the picture fits the wall width with a little margin at each side.
3. In doubt between two sizes, choose the smaller one. It will be brighter and sharper.

Backyard screenings are where the big numbers come out. At 2.6 m, a 130-inch picture on a sheet looks spectacular after dark, and Magcubic's 47-inch tripod bundle raises the lens clear of a seated crowd.

For the full list of stands and mounts that put the lens at the right height, see HY300 accessories. The HY300 manual guide covers setup from the first switch-on.