What is the output impedance of the 100W AKSA, and what is the effect of damping factor on bass?
The output impedance of the 100W AKSA is 45 milliohms at 1 KHz, approximately half that of the 55W AKSA. The topology of the 100W version is very close to the 55W AKSA, although there are many detail changes to component values. While the feedback factor is very similar, the source impedance of the larger output stage is inherently halved because of the additional pair of output devices. Thus the 100W AKSA has a damping factor of 90, and double that on an 8 Ohm load. Beyond a damping factor of about 20, there would appear to be other factors affecting the speed and quality of the bass; it seems to be much more complex than originally thought. Rest assured, however, that the 100W AKSA’s control of bass is phenomenal.
