The Harman target curve applies only below the transition frequency.

Evidence

There is no excuse for anyone thinking that the “Harman” curve is a target for anything other than at frequencies below the transition frequency, and even then, one can discuss preferred levels. The problem is that people don’t read. Enough said. — Toole, Floyd E, Sound reproduction- the acoustics and…, 1350

Categorization

• DEFINE: Clarifies the scope of what the “Harman curve” actually targets — a common point of confusion in loudspeaker design.