Always love Tyll's reviews and i praise him for his honest opinions. While i hold his methods and opinions in very high regard, i wonder though if something is amiss. As i said earlier, surely akg have all sorts of scopes and other mesaurement rigs. Impulse response is just something that could not have gone unmeasured/unchecked, surely?
I am still curious about the AKG but I can't make sense of those measurements.
From AKG website:
two-layer voice coil
The copper-covered aluminum voice coil extends sound beyond the limits of human auditory system, hitting a full spectrum of frequencies. With the ultra-lightweight two-layer voice coil a superior impulse response and an extended frequency range up to
54 kHz is guaranteed"
There must be something wrong with those measurements or AKG is full of cr*p.