Colour, contrast and brightness are decided in the first 40 mm of the optical path. Here is what is inside ours, and how to use it in your room.
Every Cloubay UST and long-throw model runs the same three-diode architecture. The differences between them are optics and brightness, not colour science.
No phosphor wheel, no colour filter, no rainbow artefacts. Each primary is generated at its own wavelength — 465 nm, 520 nm, 638 nm.
A rotating diffuser plus multi-emitter arrays cut laser speckle below the visible threshold at 1.5× screen-width seating.
3 000–4 000 ISO lumens measured to IEC 62087 — the standard that does not let you count the white-only measurement twice.
107–110% BT.2020 held at 75% stimulus, so saturated highlights stay saturated instead of washing to white.
Every projector runs a 21-point grey-scale and 6-colour sweep on the line. The ΔE report ships in the box.
To 50% output, with no lamp to replace. At four hours a night that is seventeen years.
Pick a model family and the screen size you want. We return the lens-to-screen distance, plus the physical image dimensions so you can tape it out before you order.
Measured from the back of the cabinet to the wall. Add 6–8 cm for cable clearance.
Motorised 1.6× zoom means the number below is the midpoint — you have roughly ±25% of play.
16:9 image assumed. Ultra-short-throw distances are measured from the lens, not the cabinet edge.
Buying the projector first is the most expensive mistake in home cinema. Do these in sequence and the shortlist writes itself.
Width of the usable wall, and the distance from it to your furniture line. Both matter.
South-facing windows or downlights above the screen? You need ALR, and that narrows the projector choice.
UST for 0–40 cm, long-throw for 2.5 m+. Anything in between is a compromise nobody enjoys.
1.5–2.0× screen width is a comfortable seating distance for 4K. Work backwards from your sofa.
 Long-Throw 4K RGB Triple… $2,499 |  Aetherion Max RGB Laser UST… $4,499 |  K300s Laser Projector $999.99 |  Episode One Google TV… $159 | |
|---|---|---|---|---|
| Light source | RGB triple laser | RGB triple laser | Single laser + LED | LED |
| Best room | Dedicated theatre | Living room | Mixed use | Bedroom |
| Throw | 1.27–2.03:1 zoom | 0.21:1 UST | 1.2:1 | 1.2:1 |
| Ambient light | Controlled | High | Medium | Low |
| Screen advice | Matte white 1.0 gain | Lenticular ALR | Grey 0.9 gain | Wall or 80" fixed |
| View | View | View | View |
A $4 000 projector on the wrong screen loses more contrast than the gap between our cheapest and dearest model.
Horizontal micro-louvres reject light from above. The right answer for UST in a room with ceiling downlights.
Concentric rings aimed at the UST lens position. Highest contrast gain, narrowest viewing cone.
Nothing rejected, nothing distorted. Correct for a blacked-out theatre — and wrong everywhere else.
Launch alerts, firmware notes and the occasional calibration guide. No more than twice a month.
