Placement
Placement is arithmetic done from the seat: angle, distance, height. It is the cheapest change available in most rooms, and the one most often decided by the furniture instead.
Toe-in is set from the seat with a tape, not judged from behind the cabinet.
Photo: Jens Mahnke / Pexels
Entries
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The triangle
Two speakers and a seat form a triangle, and the angles matter more than the electronics.
A sociable layout against a locatable image.
Spend an afternoon with a tape measure. -
Toe-in
Aiming trades a wide sweet spot against a precise one.
One excellent seat against three acceptable ones.
Spend on angle. It is free. -
Height and the ear
Tweeter at ear height, seated, is the whole rule.
Furniture against aim.
Spend on stands before electronics. -
Distance from walls
Boundaries reinforce low frequencies whether you want it or not.
Floor space against bass evenness.
Spend the space: pull the speakers out.