Late to this, but I just found a real solid Harman-like eq for these using squiglink. I have been thoroughly enjoying the sound.

Preamp: -4.2 dB

Filter: ON PK Fc 20 Hz Gain 0.9 dB Q 2

Filter: ON PK Fc 39 Hz Gain 3.2 dB Q 0.5

Filter: ON PK Fc 240 Hz Gain -1 dB Q 1.5

Filter: ON PK Fc 4000 Hz Gain 2 dB Q 2

Filter: ON PK Fc 4800 Hz Gain 5.2 dB Q 1.2

Filter: ON PK Fc 5000 Hz Gain -2.9 dB Q 2

Filter: ON PK Fc 5900 Hz Gain 4.4 dB Q 2

Filter: ON PK Fc 10000 Hz Gain 7.2 dB Q 2

Filter: ON PK Fc 15000 Hz Gain -9.8 dB Q 0.5