— Projector Throw · Corporate AV
Boardroom — 100-inch 16:10 screen, ceiling mount
Problem. A corporate boardroom with a 100-inch 16:10 screen and a ceiling-mount throw of 3 m needs a projector specified for daytime ambient lighting.
Answer. Throw ratio around 1.4 with 4000+ lumens recommended for a moderately-lit boardroom. The calculator anchors the install before the AV consultant builds the BOQ.
02 / In depth
How this preset reads — the engineering view.
Boardroom projection differs from cinema in one decisive dimension: ambient light tolerance. A boardroom is rarely fully blacked out — pull-down blinds and circadian-friendly indirect lighting are the default. The brightness calculation should assume 'moderate ambient', not 'dark cinema'.
This preset assumes a 100-inch 16:10 screen (2.15 m wide) at 3 m throw — typical for a 5 × 6 m conference room with a 3 m ceiling. The required throw ratio is around 1.4, which suits most short-throw to mid-throw business projectors and ceiling-mounted laser fixtures.
Lumens: 4000+ ANSI is the typical specification for this geometry against partial daylight. Modern laser projectors hit that comfortably and bring the secondary benefit of 20 000+ hour service life — meaningful in an environment used daily for the next decade.
Out of scope for the throw calculator: source switching (HDBaseT vs IP-AV decision), control protocol (Crestron vs Q-SYS vs DSP-only), microphone-and-camera placement and the unified communications stack that the projector is one node of. Use the AV-IP-vs-HDBaseT and Rack Explorer tools for those.
What this preset deliberately does not solve
- Ambient light tolerance is the dominant lumens driver — measure lux at the screen plane.
- 16:10 aspect ratio assumes a Mac/Windows boardroom; check the source devices.
- Service life of laser engines is a TCO consideration, not a throw consideration.
How this preset differs from its siblings
The home-theatre preset configures a dark-room cinema scenario — 16:9 film content, low-lumens projector acceptable, screen gain considerations dominate. This preset is the opposite: a daily-use business environment that is never fully blacked out, where lumens (not throw ratio) is the real specification driver, and where 16:10 (not 16:9) is the source-content reality. Different brief, different projector class, different TCO calculation.
02 / What that means, drawn
Side view, drawn to one scale in both directions. The screen is 2.15 m wide by 1.35 m high, and the projector stands 3.82 m from it. The current zoom position is what the projector is drawn at. The window of mount positions PowerLite L730U allows at this image width runs from 2.91 m to 4.74 m from the screen. The projector sits inside that window, with 92 cm to spare towards the screen and 92 cm to spare away from it. The recorded vertical shift lets the lens axis sit up to 81 cm off the image centre at this image height; that window is marked at the projector.
03 / Hydrated calculator
Try the configuration — live.
The calculator below is preloaded with this preset’s state. Adjust any input — your URL stays shareable.
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Brief us on the project — with this configuration.
Presets are a typology starting point. The brief wizard captures the room geometry, programme and constraints we need to translate this configuration into a real design.