Speaker Placement

Three Distances Matter

Distance to walls: changes boundary reinforcement and the frequencies affected by speaker-boundary interference. Rear-ported speakers are not automatically required to sit far from a wall; follow the manufacturer’s guidance and test the actual room response.

Distance between speakers: changes the stereo stage and the geometry of the phantom centre. Too wide for the listening distance can leave a weak centre; too narrow may limit apparent width.

Distance to the listener: changes the balance of direct and reflected sound and affects how the stereo image forms.

Start With a Listening Triangle

For conventional stereo, an approximately equal-sided triangle is a starting point, not a law. Aim the speakers so the listener is in a suitable region of each speaker’s intended coverage.

Then account for real constraints: furniture, doors, screen location, walkways and multiple seats. A perfectly symmetric diagram may not fit an asymmetric room.

Change One Thing at a Time

If you move speakers forward and change their spacing and alter toe-in, it becomes difficult to know what caused a difference.

Mark a baseline. Move both speakers forward by a small, safe distance while preserving spacing and angle. Listen at the same level. Move them back. Keep simple notes.

Small shifts may produce audible changes because boundary path differences change. Not every change will improve the result, and not every bass change proves SBIR.

When Measurements Help

A measurement microphone can show how the response at the listening seat changes after a move. Left and right measurements separately can reveal differences hidden by combined playback.

Use the same mic position, level and sweep settings for reliable comparisons. A response plot can guide a decision, but imaging and personal priorities still deserve listening checks.

The Big Idea

Speaker placement is a tuning control you already own. Use it before assuming a new component is the answer.