Please try my 7506 impulse responce:
It changes the 7506's frequency responce to a diffuse field curve that includes the HF attenuation of listening rooms. Raw data is courteousy of goldenears.net. It's only a +-2db difference but since the main range affected is between 2-8kHz the perceived difference ends up being substantial. Sony really did their homework.
Edited by markanini - 3/11/13 at 2:08pm