Should I run my receiver's room correction?

Run it, and run it carefully — it sets distances, levels and crossovers in one pass, and those three are what an untuned system gets most wrong.

What it actually does

Measures each speaker from the listening position with a supplied microphone, then sets the delay for each one, matches their levels, chooses crossover points, and applies some correction to the room’s frequency response. The first three are the valuable part.

How to run it properly

Microphone at seated ear height, at the actual seat, on something that holds it still. Room quiet — no appliances running, no traffic through an open window. Follow the additional positions if the system asks for them.

What to check afterwards

The distances it entered, against a tape measure. The speaker sizes it chose — a system that set everything to “large” and gave the subwoofer nothing has misjudged, and that is worth overriding.

Where its judgement ends and yours begins

Frequency correction below a few hundred hertz addresses room modes and is generally worth keeping. Above that, correction is more contentious, and several systems let you limit it. If the result sounds thin or artificial, limiting the correction range is the first thing to try rather than switching it off entirely.

This does not replace the manufacturer's own instructions. Every brightness figure, contrast ratio, power rating and load capacity on this page is reported from the manufacturer's own documentation, with its unit written as published, and named as such — none of it is measured here. A brightness figure that is not expressed in ANSI or ISO lumens is reported as the manufacturer expressed it and is never converted, because no conversion exists.