I thought a lot, and came to the conclusion that Bruel Kjaer 1974 Target Curve is ingenious and simple.
This curve is specifically calculated (averaged, if you will) for an average, unprepared or poorly prepared home environment.
A rise of about 3 decibels, starting from 2 kHz and below, gives expressiveness to the most important range for us - the mid frequencies,
and adds solidity to the bass, which is missing if you simply make the frequency response linear.
A smooth roll-off from about 3 kHz onwards provides us with restrained high frequencies, devoid of loudness and harshness.
This target curve is a great invention, created by a man who understands great sound quality. It's a pity that Floyd is not able to appreciate it.
PS. BK 1974 is NOT the Harman curve, please do not confuse it
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