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Everything on Beam & Backwall, organised by topic.
Projector Planning
- How to Calculate Projector Throw Ratio — Calculate projector throw ratio as lens-to-screen distance divided by active image width. To find width, divide throw distance by throw ratio.
- How to Choose a Projector for Gaming — Choose a gaming projector by testing the exact console or computer signal, port, resolution, frame rate, HDR format, picture mode, and complete receiver…
- Choose a Projector for Your Room — Choose a projector by measuring the screen wall, lens-to-screen distance, seating, ceiling, ambient light, cable route, ventilation, and safe mounting…
- How to Choose Projector Screen Size — Choose projector screen size by mocking up several active image widths and viewing them from every regular seat.
- DLP vs. LCD vs. LCoS Projectors — DLP projectors use micromirror imaging, while LCD and LCoS modulate light with liquid-crystal panels through transmissive or reflective designs.
- Lens Shift vs. Keystone Correction — Lens shift repositions the image optically within the projector's documented range, while keystone correction digitally resamples the image to counter…
- Match Projector Resolution to Your Source — Match projector resolution by separating accepted input formats from native displayed resolution.
- Projector Ceiling Mount vs. Shelf — Choose a ceiling mount when permanent protected alignment justifies qualified structural and electrical work; choose a shelf when the lens can reach the…
- Short-Throw vs. Standard Projector — Short-throw projectors make a large image from a shorter lens distance, reducing rear-room placement and some beam crossings.
- Projector Brightness Explained — Projector brightness is light output, but the image you see also depends on screen area and material, picture mode, calibration, zoom, room light, source,…
Screens & Room Setup
- Calibrate a Projector With Basic Patterns — Calibrate a projector with basic patterns only after setting the room light, screen, source format, focus, and geometry.
- Choose a Projector Screen Material — Choose screen material by matching gain, viewing angle, color, texture, flatness, throw direction, ambient-light structure, image size, seating, and…
- Clean a Projector Lens and Filter — Clean projector optics only through the exact user-service procedure.
- Connect a Projector to a Sound System — Connect projector audio by defining the signal path first: sources through an AV receiver to the projector, sources to the projector with ARC/eARC or…
- Control Ambient Light for a Projector — Control ambient light by mapping windows, fixtures, indicators, and reflections that reach the screen during real viewing hours.
- How to Focus and Align a Projector — Align a projector before focusing: secure projector and screen, use an internal grid, physically square the lens plane to the screen, correct rotation,…
- How to Prepare a Wall for Projection — Prepare a projection wall by confirming the final image size and projector geometry, then inspecting under grazing and projected light for waves, texture,…
- How to Route Projector Cables Safely — Route projector cables by mapping power and signal separately, choosing cable rated for the bandwidth and installation environment, testing every intended…
- Troubleshoot a Dim Projector Image — Troubleshoot a dim projector with a known source and internal menu under fixed room light.
- White vs. Gray Projector Screen — White screens are a common neutral choice in controlled light and are often sold with higher gain than gray alternatives.