Even designer loudspeakers deviate seriously from flat response targets.

Evidence

The curves are all different, and all exhibit serious deviations from the theoretical ideal horizontal flat line. It seems that some of the designers attempted to be flat on axis but did not succeed. — Toole, Floyd E, Sound reproduction- the acoustics and…, 74

Categorization

  • SHARE: A vivid historical fact for an audio-engineering friend: even 1960s commercial designs fell drastically short of flat response on all axes.
  • XREF: connects to: Highly regarded loudspeakers measured far from flat in anechoic response; Highly regarded hifi loudspeakers had wildly non-flat anechoic responses — Toole, Floyd E, Sound reproduction- the acoustics and…, 66; Real loudspeakers show flat magnitude response only below 800 Hz with a midrange dip — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 505
  • yield-rescued: below the book’s yield-target cutoff, included anyway for connecting to: Highly regarded loudspeakers measured far from flat in anechoic response; Highly regarded hifi loudspeakers had wildly non-flat anechoic responses — Toole, Floyd E, Sound reproduction- the acoustics and…, 66; Real loudspeakers show flat magnitude response only below 800 Hz with a midrange dip — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 505

Broader Connections