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Old 20th August 2019
Lives for gear

Stuart, I think no one said that (equilateral) triangle is formed with 2 speakers and the ears. If we want to be picky, 2 speakers and 2 ears don't form a triangle

(Equilateral) triangle is just a geometric form helping positioning the listening point into the triangle into the room.

Adding to my previous message : note that the difference between 25° and 30° (named δ1 and δ2 is getting bigger when distance d gets longer.

Equilateral triangles/ monitor placement.-delta.png

Difference measured between on-axis and off-axis depends on polar plot and distance d.

In a small acoustic space, difference should be very minimal. Since d is 'short'. Specially if polar plot shows very minimal differences between on-axis and 5° off-axis.

As I said, in a big perfectly treated room, like Northward's ones, difference should be more noticeable. But I can't say more about it. I never saw a polar plot from ATC.

But let's go back to the subject.

Now, we've been talking about only one axis (horizontal). Things get more funny if we want to rotate speakers on vertical axis. More on this later .
Attached Thumbnails
Equilateral triangles/ monitor placement.-delta.png