Boundary distances tuned to be unequal and non-multiples minimize frequency-response variations

Evidence

The approach offered by Allison (1974, 1975) and Ballagh (1983) involves choosing the position of the loudspeaker with respect to the boundaries in a manner that minimizes the variations in frequency response at the listening locations. Obviously, the goal is to arrange for the woofer-to-boundary distances, floor and walls (length, width and height), to be as different as possible, while not being multiples of each other. The more different these distances are, the less will be the effect at any frequency, but there will still be an effect. Finding an optimum result may involve some trial and error. It may also result in visually unappealing, asymmetrical, or incorrect (in terms of stereo or multichannel imaging) locations for the loudspeakers. — Toole, Floyd E, Sound reproduction- the acoustics and…, 1469

Categorization

• XREF: Connects to the placement-strategy family of room-acoustics recipes seen across audio literature.