You have purchased new stereo speakers or a complete system and would like to set them up in the best possible way in terms of sound?
A stereo system achieves the best sound effect when the distance between the listener and the two speakers is equal.
So imagine the setup from above with the favourite listening position as a top of a triangle. Starting from that, the speakers should form the other two tips of an equilateral triangle. The listening position in the triangle is also called the sweet spot.
If the formation of this triangle is not possible for reasons of room architecture, move as close as possible to the triangle.
Speakers with rear exit ports (e.g. Ultima 40 bass reflex port) should not be placed directly against the wall.