Answers
One question, one straight answer
52 questions, each on its own page, each answered in a few hundred words rather than buried at the bottom of a listicle. Where the honest answer is "the maker publishes a number that is not measured to any standard", it says so.
Choosing
How each family differs, what to buy first, and what the specification on the box actually means.
Brightness & contrast
ANSI lumens against plain lumens, native contrast against dynamic, and why the same machine is sold with two figures ten times apart.
Throw & placement
Throw ratio, the distance a given image needs, vertical offset, and why lens shift is worth more than keystone correction.
Screens & gain
What gain does to the viewing angle, when a grey screen helps, and which screen an ultra short throw projector actually requires.
Sound formats
What decoding Atmos means, where DTS:X differs, and why eARC changes what a television can send to a soundbar.
Speakers & rooms
Sensitivity and impedance, what a rear port needs from a wall, and why moving a subwoofer beats upgrading it.
Connections & cables
Certified bandwidth against version numbers, how far copper carries 48 Gbit/s, ARC against eARC, and what optical cannot do.
Sources & streaming
DRM levels and why a service looks soft, HDR format licensing, audio passthrough, and what a disc still carries that a stream does not.
Mounting & the rules
Stated load against what a wall holds, VESA patterns, and the fixings a kit does and does not include. Described and linked to its source, never interpreted here.
Setup & calibration
Geometry, focus, speaker levels and distances, lip sync, and the settings that matter before any picture mode does.
Maintenance
Filters and lamp hours, dust on optics, what cleans a coated panel and what strips it.
When it goes wrong
No picture, no sound, stuttering, an echo between rooms — causes in the order worth checking.